ORCID Profile
0000-0002-9126-1593
Current Organisation
University of South Australia
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Functional Materials | Materials Engineering | Nanomaterials | Materials engineering | Energy Generation, Conversion and Storage Engineering | Colloid and Surface Chemistry | Nanotechnology | Water Treatment Processes | Functional materials | Nanotechnology not elsewhere classified | Nanofabrication, Growth and Self Assembly
Expanding Knowledge in the Chemical Sciences | Solar-Thermal Energy | Expanding Knowledge in the Physical Sciences |
Publisher: Elsevier BV
Date: 05-2022
Publisher: Wiley
Date: 07-2020
Publisher: American Chemical Society (ACS)
Date: 08-2018
Abstract: Employing nanoscaled materials as photosensitizer (PS) carriers is an effective strategy to solve the problem of poor solubility and low tumor selectivity of hydrophobic PS in photodynamic therapy (PDT), which compulsorily requires the PS release in PDT implementation. However, the complicated environment in vivo makes it difficult to precisely design and control the release process and the delivery process requires real-time tracking. Developing a delivery strategy of hydrophobic PS in the monomeric form with fluorescent emission and without consideration of the PS release in the PDT process, is in urgent demand. Herein, we report a versatile and potent strategy for fabrication of photodynamic nanoparticles (nanoPSs) with featuring the monomeric PS based on aromatic peptide-modulated self-assembly of porphyrin derivatives. Aromatic peptides within nanoPSs can isolate hydrophobic porphyrins from each other, resulting in monomeric porphyrin delivery with real-time fluorescence tracking property and avoiding self-aggregation and hence porphyrin release. Moreover, partially charged porphyrins tend to expose on the surface of nanoPSs, facilitating production and diffusion of
Publisher: Informa UK Limited
Date: 19-09-2018
Publisher: American Chemical Society (ACS)
Date: 29-10-2008
DOI: 10.1021/JP807379C
Publisher: American Chemical Society (ACS)
Date: 16-03-1616
DOI: 10.1021/CM2028417
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2019
Publisher: Elsevier BV
Date: 03-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CC04779A
Abstract: High CO selectivity for the CO 2 electroreduction reaction was achieved on Ni–Cu bimetallic catalysts. We observed that changing the Cu content in the catalysts causes charge redistribution which results in a negative correlation with CO selectivity.
Publisher: Wiley
Date: 13-07-2022
Abstract: With the increase in water consumption and pollution resulting from the rising world population and industrial development, severe fresh water shortage has been regarded as one of the critical problems facing the world. Solar‐driven water purification is an environment friendly and promising technology to address the problem. However, low photothermal conversion efficiency impedes its practical application. Herein, a natural spruce wood‐based solar evaporator functionalized with zeolitic imidazolate framework (ZIF‐8) nanoparticles and polydopamine (PDA) layers is designed, which significantly reduces the equivalent evaporation enthalpy and substantially boosts solar evaporation efficiency. The evaporation rate of the optimized wood‐based evaporator reached 2.28 kg m −2 h −1 with a high evaporation efficiency of 87.5% under 1.0 sun. Furthermore, the integrated spruce wood/ZIF‐8/PDA hybrids can remove organic pollutants after solar evaporation. Notably, the constructed multifunctional solar evaporator takes advantage of sustainable solar energy, low‐cost biomass, and ZIF‐8/PDA nanostructures to acquire desirable performance in water evaporation and sewage purification.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8SE00538A
Abstract: Highly efficient nanocatalysts which can selectively decompose hydrous hydrazine for hydrogen production are introduced.
Publisher: Elsevier BV
Date: 09-2006
Publisher: American Chemical Society (ACS)
Date: 10-06-2021
Publisher: American Chemical Society (ACS)
Date: 11-07-2022
Publisher: American Chemical Society (ACS)
Date: 08-05-2014
DOI: 10.1021/AM501632F
Abstract: We report a facile method to synthesize Fe3O4@polydopamine (PDA)-Ag core-shell microspheres. Ag nanoparticles (NPs) are deposited on PDA surfaces via in situ reduction by mussel-inspired PDA layers. High catalytic activity and fast adsorption of a model dye methylene blue (MB) at different pH values are achieved mainly due to the presence of monodisperse Ag NPs and electrostatic interactions between PDA and MB. The as-prepared Fe3O4@PDA-Ag microspheres also show high cyclic stability (>27 cycles), good acid stability, and fast regeneration ability, which can be achieved efficiently within several minutes by using NaBH4 as the desorption agent, showing great potentials in a wide range of applications.
Publisher: American Chemical Society (ACS)
Date: 30-10-2015
DOI: 10.1021/ACS.LANGMUIR.5B03303
Abstract: Solvent exchange is a simple process to form oil nanodroplets at solid-liquid interfaces with well-defined location and morphology. In this process, a good solvent of the oil is displaced by a poor solvent, leading to the nucleation and growth of oil droplets from a transient oversaturation at the mixing front. Our recent work has shown that the final volume of the droplets is related to the flow conditions. In this work, we investigate the effects of the type and the composition of solvents on the droplet formation under the same flow conditions. Water nanodroplets were produced by ethanol/cyclohexane (solution A) and cyclohexane (solution B) on a hydrophilic substrate. We found that the droplet size increases first and then decreases with an increase of the initial ethanol concentration in solution A. This is attributed to the phase separation of ethanol-cyclohexane-water in particular, the composition of solution A on the phase boundary above the Ouzo region. The same reason also contributes to the lower efficiency in droplet formation for a longer alkane. The important implication from this work is that the maximal droplet volume is limited by the phase separation of the solvents used in the solvent exchange.
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 2021
Publisher: IEEE
Date: 07-2017
Publisher: Wiley
Date: 06-2017
Publisher: Wiley
Date: 08-03-2023
Abstract: The rational design of economic and high‐performance electrocatalytic water‐splitting systems is of great significance for energy and environmental sustainability. Developing a sustainable energy conversion‐assisted electrocatalytic process provides a promising novel approach to effectively boost its performance. Herein, a self‐sustained water‐splitting system originated from the heterostructure of perovskite oxide with 2D Ti 3 C 2 T x MXene on Ni foam (La 1‐x Sr x CoO 3 /Ti 3 C 2 T x MXene/Ni) that shows high activity for solar‐powered water evaporation and simultaneous electrocatalytic water splitting is presented. The all‐in‐one interfacial electrocatalyst exhibits highly improved oxygen evolution reaction (OER) performance with a low overpotential of 279 mV at 10 mA cm −2 and a small Tafel slope of 74.3 mV dec −1 , superior to previously reported perovskite oxide‐based electrocatalysts. Density functional theory calculations reveal that the integration of La 0.9 Sr 0.1 CoO 3 with Ti 3 C 2 T x MXene can lower the energy barrier for the electron transfer and decrease the OER overpotential, while COMSOL simulations unveil that interfacial solar evaporation could induce OH − enrichment near the catalyst surfaces and enhance the convection flow above the catalysts to remove the generated gas, remarkably accelerating the kinetics of electrocatalytic water splitting.
Publisher: Elsevier BV
Date: 12-2022
Publisher: Elsevier BV
Date: 10-2023
Publisher: Wiley
Date: 17-04-2020
Publisher: Elsevier BV
Date: 02-2019
Publisher: Wiley
Date: 11-05-2021
Abstract: Present one‐step N 2 fixation is impeded by tough activation of the N≡N bond and low selectivity to NH 3 . Here we report fixation of N 2 ‐to‐NH 3 can be decoupled to a two‐step process with one problem effectively solved in each step, including: 1) facile activation of N 2 to NO x − by a non‐thermal plasma technique, and 2) highly selective conversion of NO x − to NH 3 by electrocatalytic reduction. Importantly, this process uses air and water as low‐cost raw materials for scalable ammonia production under ambient conditions. For NO x − reduction to NH 3 , we present a surface boron‐rich core–shell nickel boride electrocatalyst. The surface boron‐rich feature is the key to boosting activity, selectivity, and stability via enhanced NO x − adsorption, and suppression of hydrogen evolution and surface Ni oxidation. A significant ammonia production of 198.3 μmol cm −2 h −1 was achieved, together with nearly 100 % Faradaic efficiency.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA03024A
Abstract: In this work, we developed a facile electrochemical deposition approach to prepare Gd-doped CeO x nanoflowers on porous carbon foam with improved supercapacitor characteristics by UV irradiation.
Publisher: Springer Science and Business Media LLC
Date: 22-03-2018
DOI: 10.1038/S41598-018-22956-9
Abstract: A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
Publisher: Wiley
Date: 22-09-2022
Abstract: Power generation by converting energy from the ambient environment has been considered a promising strategy for developing decentralized electrification systems to complement the electricity supply for daily use. Wet gases, such as water evaporation or moisture in the atmosphere, can be utilized as a tremendous source of electricity by emerging power generation devices, that is, moisture‐enabled‐electric nanogenerators (MEENGs). As a promising technology, MEENGs provided a novel manner to generate electricity by harvesting energy from moisture, originating from the interactions between water molecules and hydrophilic functional groups. Though the remarkable progress of MEENGs has been achieved, a systematic review in this specific area is urgently needed to summarize previous works and provide sharp points to further develop low‐cost and high‐performing MEENGs through overcoming current limitations. Herein, the working mechanisms of MEENGs reported so far are comprehensively compared. Subsequently, a systematic summary of the materials selection and fabrication methods for currently reported MEENG construction is presented. Then, the improvement strategies and development directions of MEENG are provided. At last, the demonstrations of the applications assembled with MEENGs are extracted. This work aims to pave the way for the further MEENGs to break through the performance limitations and promote the popularization of future micron electronic self‐powered equipment.
Publisher: American Chemical Society (ACS)
Date: 15-11-2007
DOI: 10.1021/CG060727K
Publisher: Elsevier BV
Date: 10-2022
Publisher: Elsevier BV
Date: 09-2006
Publisher: Springer Science and Business Media LLC
Date: 02-2014
Publisher: Elsevier BV
Date: 12-2021
Publisher: Wiley
Date: 08-02-2021
Publisher: Elsevier BV
Date: 10-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SM00623G
Abstract: Understanding the surface properties and rheology of colloidal suspensions in the presence of polymer additives with high salinity is of great importance in a wide range of industrial applications.
Publisher: Informa UK Limited
Date: 20-12-2018
Publisher: Wiley
Date: 11-03-2021
Publisher: Elsevier BV
Date: 08-2020
Publisher: American Chemical Society (ACS)
Date: 24-03-2015
Publisher: Elsevier BV
Date: 06-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA03799K
Abstract: Ni 1 Co 3 @PDA nanosheets were utilized as photothermal materials in a kerosene l -like evaporator for solar steam generation. A high evaporation rate of 2.42 kg m −2 h −1 with a corresponding energy efficiency beyond the theoretical limit was achieved.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA17663A
Publisher: Wiley
Date: 28-07-2023
Abstract: Porous‐structured evaporators have been fabricated for achieving a high clean water throughput due to their maximized surface area. However, most of the evaporation surfaces in the porous structure are not active because of the trapped vapor in pores. Herein, a three‐dimensional (3D) cylindrical aerogel‐based photothermal evaporator with a disordered interconnected hierarchical porous structure is developed via a Pickering emulsion‐involved polymerization method. The obtained cotton cellulose/aramid nanofibers olypyrrole (CAP) aerogel‐based evaporator achieved all‐cold evaporation under 1.0 sun irradiation, which not only completely eliminated energy loss via radiation, convection, and conduction, but also harvested massive extra energy from the surrounding environment and bulk water, thus significantly increasing the total energy input for vapor generation to deliver an extremely high evaporation rate of 5.368 kg m −2 h −1 . In addition, with the external convective flow, solar steam generation over the evaporator can be dramatically enhanced due to fast vapor diffusion out of its unique opened porous structure, realizing an ultrahigh evaporation rate of 18.539 kg m −2 h −1 under 1.0 sun and 4.0 m s −1 . Moreover, this evaporator can continuously operate with concentrated salt solution (20 wt.% NaCl). This work advances rational design and construction of solar evaporator to promote the application of solar evaporation technology in freshwater production.
Publisher: American Chemical Society (ACS)
Date: 23-01-2008
DOI: 10.1021/CG0705761
Publisher: American Chemical Society (ACS)
Date: 17-09-2012
DOI: 10.1021/LA3027804
Abstract: In this report, we demonstrate a rapid and simple seeded growth method for synthesizing monodisperse, quasi-spherical, citrate-stabilized Au nanoparticles (Au NPs) via H(2)O(2) reduction of HAuCl(4). Au NPs with diameter ranging from 30 to 230 nm can be synthesized by simply adding 12 nm citrate stabilized Au NP seeds to an aqueous solution of H(2)O(2) and HAuCl(4) under ambient conditions. The diameter of the resulting Au NPs can be quantitatively controlled by the molar ratio of HAuCl(4) to the Au seeds. The standard deviation of the Au NP sizes is less than 10%, and the ellipticity (ratio of major to minor axes) of the NPs is less than 1.1. Compared to existing ones, the present seeded growth approach is implemented within 1 min under ambient condition, and no unfavorable additives are involved because H(2)O(2) can readily decompose into H(2)O during storage or via boiling.
Publisher: Elsevier BV
Date: 2023
Publisher: American Chemical Society (ACS)
Date: 26-09-2014
DOI: 10.1021/JP5076109
Publisher: American Chemical Society (ACS)
Date: 11-09-2023
Publisher: Springer Science and Business Media LLC
Date: 07-06-2023
DOI: 10.1007/S41101-023-00195-Y
Abstract: It is well accepted that moisture ingress in concrete reduces durability and life span of water assets. Condition assessment is an important tool to inform decision for maintenance, retrofit or replacement. However, the most significant challenge is to obtain accurate condition information, particularly when the inspection points are physically difficult to access or inaccessible. Therefore, a reliable and cost-effective monitoring (sensor) system, preferably real-time with ability to streaming online, would be a useful management tool, particularly for water utilities. This paper describes an approach to develop a distributed optical fibre humidly sensor for condition assessment and environmental monitoring both inside and outside of infrastructures, such as inside the concrete and surrounding soil. A new polyelectrolyte multilayer (PEM) coating with higher sensitive was evaluated for relative humidity measurement in soil and concrete, respectively. In this study, two simulated conditions, in concrete and soil, were conducted to evaluate the sensing concept with the development of appropriate measuring methodologies including fibre installation and protection. The optical fibre sensor setup in laboratory environment showed that optical sensor can detect and indicate voltage change with the variation of moisture contents in both soil and concrete. The test results indicate a good correlation between high levels of relative humidity/moisture and transmitted optical power. A simple relative humidity (RH) calibration can be used to convert signal to RH in percentage for soil and concrete measurements and the procedure used to imbed the fibre in both s les is effective. Nevertheless, the sensor measures soil humidity (not moisture content) therefore, further investigation is required to identify the consequence for the variation of the measured parameter.
Publisher: Wiley
Date: 26-01-2009
Abstract: By introducing VO(3)(-) into the reaction system, uniform hierarchical nanostructures of Bi(2)O(3) have been successfully synthesized by a template-free aqueous method at 60-80 degrees C for 6 h. The as-prepared hierarchitectures are composed of 2D nanosheets, which intercross with each other. Based on the electron microscope observations, the growth of such hierarchitectures has been proposed as an Ostwald ripening process followed by self-assembly. The nucleation, growth, and self-assembly of Bi(2)O(3) nanosheets could be readily tuned, which brought different morphologies and microstructures to the final products. Pore-size distribution analysis revealed that both mesopores and macropores existed in the product. UV-vis spectroscopy was employed to estimate the band gap energies of the hierarchical nanostructures. The photocatalytic activities of as-prepared Bi(2)O(3) hierarchitectures were 6-10 times higher than that of the commercial s le, which was evaluated by the degradation of RhB dye under visible light irradiation (lambda>420 nm).
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC47509C
Abstract: It is found that emulsion droplets could adsorb onto particle (Cu2O) surfaces to form interfacial nanodroplets. The emulsion droplets capped domains on surfaces are protected, while the uncapped domains are exposed, thus allowing direct heterogeneous surface engineering in particle suspension.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8RA00454D
Abstract: Porous ion-exchange resins with features of high selectivity, high capacity, fast adsorption kinetics and chemical stability over a wide pH range are attractive for extracting precious metals like copper and upcycling waste.
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B616460A
Publisher: American Chemical Society (ACS)
Date: 28-08-2007
DOI: 10.1021/JP065155T
Publisher: Elsevier BV
Date: 02-2019
Publisher: MDPI AG
Date: 03-04-2014
DOI: 10.3390/NANO4020256
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3EE00770G
Abstract: Illustration of protein-based MEG generating electricity by absorbing water from moisture.
Publisher: Elsevier BV
Date: 06-2006
Publisher: Wiley
Date: 22-05-2017
Publisher: Elsevier BV
Date: 10-2015
DOI: 10.1016/J.CIS.2015.07.004
Abstract: Nanoscale oil droplets locating at solid-liquid interfaces significantly impact the interfacial properties, which are concerned in both industry applications and fundamental studies. This review article presents an overview of the current progress in nanodroplet research. We will start from the characterization of interfacial nanodroplets and the formation of interfacial nanodroplets by direct adsorption from emulsions and by the solvent exchange protocol. Then we will review the experimental and theoretical studies on the evolution of oil nanodroplets including spreading, dissolution, and detachment. We will also cover the emerging applications of the interfacial nanodroplets in the fields of surface functionalization and nanostructure engineering, and particularly, highlight the potential application as capping agents to obtain architectures on microparticle surface. Finally we propose the challenges and the opportunities in this area. In our opinion, the nanodroplets have not only of high relevance to practical applications, but also serve as a model system for understanding many interfacial phenomena, such as phase separation and wetting on a microscopic scale.
Publisher: Springer Science and Business Media LLC
Date: 15-02-2006
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 06-2023
Publisher: Springer Science and Business Media LLC
Date: 06-05-2014
DOI: 10.1038/SREP04849
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2019
Publisher: Elsevier BV
Date: 12-2013
Publisher: American Chemical Society (ACS)
Date: 30-08-2012
DOI: 10.1021/LA302394E
Abstract: Polydopamine (PDA)-Au Janus particles were obtained by simply adding HAuCl(4) to a PDA particle suspension, prepared via self-polymerization of dopamine in basic solution at room temperature. The structures of the PDA-Au particles are readily controlled by electrostatic repulsion between the constituent particles, which can be realized simply via adjusting the environmental pH. PDA-Au Janus particles are formed only in a narrow pH range of 2.5-3.0 due to the properly enhanced electrostatic repulsion between the Au particles growing on as-prepared PDA particles and between the Au and PDA particles. The obtained PDA-Au Janus particles can become interfacially active and self-assemble at oil/water interfaces as a result of spatially well-separated hydrophilic (PDA) and hydrophobic (Au) domains on the surfaces, reminiscent of hiphilic molecules.
Publisher: IOP Publishing
Date: 08-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA03280G
Abstract: Inspired by a kerosene oil l , a highly efficient solar-evaporation system with the evaporation surface located above the bulk water surface is realized.
Publisher: Elsevier BV
Date: 10-2006
Publisher: Elsevier BV
Date: 05-2008
Publisher: Hindawi Limited
Date: 2014
DOI: 10.1155/2014/902730
Abstract: Metal oxide nanosheets have promising potential applications in novel energy storage devices. In this work, Co 3 O 4 nanosheets/carbon foam with excellent supercapacitor characteristics was successfully fabricated, without using metal substrates. The experimental results demonstrate that the electrochemical tests showed that the as-prepared Co 3 O 4 nanosheets exhibited an ideal capacitive behavior with a maximum specific capacitance of 106 F/g in 1 M NaOH solution at a scan rate of 0.1 V s −1 .
Publisher: Wiley
Date: 30-04-2022
Abstract: Herein, using hierarchical porous CuS–cellulose composite as photothermal materials, a 3D opened hollow photothermal evaporator is designed and fabricated to target high solar evaporation rates. Such a unique structure not only imparts the solar evaporator with an efficient water evaporation by minimizing energy loss, introducing cold evaporation surfaces for drawing additional energy from the bulk water and surrounding air, but also fully activates evaporation on both inner and outer evaporation surfaces, thus delivering superior evaporation rates compared to the enclosed evaporators. Moreover, under convective flow, this special structure effectively promotes the escape of vapor inside the evaporator to avoid the vapor accumulation, further enhancing the evaporation on inner evaporation surfaces, thus improving the evaporation rate up to11.911 kg m −2 h −1 under a convective flow rate of 4.0 m s −1 and 1.0 sun irradiation. The operability of the as‐prepared solar evaporator under natural environmental conditions is examined by outdoor evaporation tests. The obtained solar evaporator is demonstrated to be applicable for generating clean water from model seawater and dye wastewater. An impetus for promoting practical application of solar steam generation in seawater desalination and wastewater purification is provided.
Publisher: American Chemical Society (ACS)
Date: 08-01-2009
DOI: 10.1021/IE801516U
Publisher: Wiley
Date: 18-06-2021
Abstract: Interfacial solar steam generation offers a promising and cost‐effective way for saline water desalination. However, salt accumulation and deposition on photothermal materials during saline and brine evaporation is detrimental to the stability and sustainability of solar evaporation. Although several antisalt strategies are developed, it is difficult to simultaneously achieve high evaporation rates ( 2.0 kg m −2 h −1 ) and energy efficiencies. In this study, a self‐rotating photothermal evaporator with dual evaporation zones (i.e., high‐temperature and low‐temperature evaporation zones) is developed. This photothermal evaporator is sensitive to weight imbalance ( 15 mg) thus is able to quickly respond to salt accumulation by rotation to refresh the evaporation surface, while the dual evaporation zones optimize the energy nexus during solar evaporation, simultaneously realizing excellent salt‐resistant performance and high evaporation rate (2.6 kg m −2 h −1 ), which can significantly contribute to the real‐world application of solar steam generation technology.
Publisher: Research Square Platform LLC
Date: 19-10-2023
Publisher: Wiley
Date: 29-03-2010
Publisher: Elsevier BV
Date: 03-2010
Publisher: Springer Science and Business Media LLC
Date: 11-08-2017
DOI: 10.1038/S41598-017-08562-1
Abstract: Real-time measurement of the relative humidity of air has applications ranging from process control to safety. By using a microfiber form-factor, we demonstrate a miniature and fast-response hygrometer with the shortest-ever response time (3 ms). The sensor head consists of an optical microfiber of 10 µm diameter and 2 mm length configured to form a compact U-shaped probe, and functionalized with a polyelectrolyte multilayer coating of 1.0 bilayer. The sensing mechanism is primarily water-absorption-based optical loss. We have measured a response time of 3 ms and a recovery time of 36 ms. The sensitivity is as high as 0.4%/%RH, and the detection limit is as low as 1.6%RH. The maximum relative humidity is 99%RH, before reaching a recoverable dew-point.
Publisher: American Chemical Society (ACS)
Date: 28-06-2006
DOI: 10.1021/JP061934Y
Abstract: Octahedral Cu(2)O crystals with tunable edge length were synthesized by reducing copper hydroxide with hydrazine without using any surfactant. Systematic experiments were carried out to investigate the factors which impact on the morphology and size of the products. The molar ratios of the reagents (NH(3):Cu(2+) and OH(-):Cu(2+)) determined the morphology and size of the corresponding products via affecting the coordination between NH(3) and Cu(2+). It is demonstrated that the ratio of growth rate along 111 versus 100 was varied by adjusting the molar ratio of NH(3) to Cu(2+), thus Cu(2)O crystals with different morphologies such as spheres, cubelike, and octahedra were obtained. The edge lengths of octahedra can be easily tuned from 130 to 600 nm by adjusting the molar ratio of OH(-) to Cu(2+). It is an effective and facile method for the controlled synthesis of octahedral Cu(2)O. The obtained octahedral Cu(2)O particles show improved ability on adsorption and photodegradation of methyl orange compared with cubic Cu(2)O particles.
Publisher: Elsevier BV
Date: 2014
Publisher: American Chemical Society (ACS)
Date: 03-10-2018
Abstract: The aim of this study was to test the performance of a novel method for acid rock drainage (ARD) control through the formation of Al(OH)
Publisher: American Chemical Society (ACS)
Date: 29-08-2008
DOI: 10.1021/CG800077H
Publisher: IOP Publishing
Date: 27-06-2006
Publisher: Elsevier BV
Date: 11-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA43929A
Publisher: Springer Science and Business Media LLC
Date: 04-11-2020
Publisher: American Chemical Society (ACS)
Date: 08-01-2016
Abstract: Herein we report a simple and substrate-independent approach to fabricate transparent oil-repellent coatings, which involves alternate deposition of poly(diallyldimethylammonium) (PDDA) and poly(styrenesulfonate) (PSS) onto substrates, followed by incubation of the coated objects into perfluorooctanoate (PFO) aqueous solutions for 2 min. Various low-surface-tension liquids can easily slide down the coating surfaces on flat substrates at a sliding angle lower than 12° for 10 μL droplets. The coatings are applicable to different substrates including Si, glass, plastic, steel, and wood, and those with complex shapes and large surface areas. They are also applicable to rough substrates with roughness at both micro/nanoscale and macroscopic scales to realize the easy-sliding oil repellency. Incubation of the PDDA/PSS polyelectrolyte multilayers (PEMs) into PFO solutions induces an effective but nondestructive substitution of PFO anions for PSS in the PEMs, which results in a composite coating with PFO anions homogeneously interspersed in both the coating surface and the bulk. Thanks to the as-described "repeating-layer" composition/structure of the coatings, their easy-sliding oil repellency can be self-healed after surface decomposition or well maintained after physical damages, due to the replenishing surface. Therefore, the advantageous characteristics of the as-developed oil-repellent coatings and the simplicity of the preparation protocol make the coatings highly practical for real-world applications. It is believed that the coatings can perform as antismudge coatings that shield against oil-borne contaminants, chemical-shield coatings that protect coated plastics from dissolution by organic solvents, and nonstick coatings (of oil tankers or pipelines) that enable loss-free oil transportation.
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 09-2020
Publisher: American Chemical Society (ACS)
Date: 27-09-2013
DOI: 10.1021/JP4067789
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CC03566A
Abstract: A cell-inspired microreactor can modulate the phase-oriented transport of reagents at interfaces, affording a powerful tool to optimize reaction selectivity.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC00678D
Abstract: Unconventionally, by placing hydrophilic particles in an oil phase before emulsification, the energy barrier is successfully eliminated and Pickering emulsions are easily formed.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4CC08489F
Abstract: The polydopamine carrier causes the enrichment of methylene blue toward its surface, leading to the improved catalytic performance of the carried Au nanoparticles.
Publisher: Wiley
Date: 28-01-2022
Abstract: Solar anti‐/deicing can solve icing problems by converting sunlight into heat. One of the biggest problems, which has long been plaguing the design of solar anti‐/deicing surfaces, is that photothermal materials are always lightproof and appear black, because of the mutual exclusiveness between generating heat and retaining transparency. Herein, a highly transparent and scalable solar anti‐/deicing surface is reported, which enables the coated glass to exhibit high transparency ( % transmittance at 550 nm) and meanwhile causes a °C surface temperature increase relative to the ambient environment under 1.0 sun illumination. Such a transparent anti‐/deicing surface can be fabricated onto a large class of substrates (e.g., glass, ceramics, metals, plastics), by applying a solid omniphobic slippery coating onto layer‐by‐layer‐assembled ultrathin MXene multilayers. Hence, the surface possesses a self‐cleaning ability to shed waterborne and oil‐based liquids thanks to residue‐free slipping motion. Passive anti‐icing and active deicing capabilities are, respectively, obtained on the solar thermal surface, which effectively prevents water from freezing and simultaneously melts pre‐formed ice and thick frost. The self‐cleaning effect enables residue‐free removal of unfrozen water and interfacially melted ice/frost to boost the anti‐/deicing efficiency. Importantly, the surface is capable of self‐healing under illumination to repair physical damage and chemical degradation.
Publisher: Elsevier BV
Date: 08-2022
Publisher: Chinese Chemical Society
Date: 08-2020
Publisher: American Chemical Society (ACS)
Date: 07-12-2015
Publisher: American Chemical Society (ACS)
Date: 29-08-2008
DOI: 10.1021/CG800258N
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6MH00317F
Abstract: A touchless control system that can be operated by a humidity signal is developed based on colorimetric humidity-sensitive materials.
Publisher: American Chemical Society (ACS)
Date: 05-10-2023
Publisher: The Chemical Society of Japan
Date: 03-2006
DOI: 10.1246/CL.2006.264
Publisher: SPIE
Date: 23-04-2017
DOI: 10.1117/12.2263428
Publisher: American Chemical Society (ACS)
Date: 09-03-2020
Publisher: Wiley
Date: 14-03-2023
Abstract: Improving interfacial solar evaporation performance is crucial for the practical application of this technology in solar‐driven seawater desalination. Lowering evaporation enthalpy is one of the most promising and effective strategies to significantly improve solar evaporation rate. In this study, a new pathway to lower vaporization enthalpy by introducing heterogeneous interactions between hydrophilic hybrid materials and water molecules is developed. 2D MoN 1.2 nanosheets are synthesized and integrated with rGO nanosheets to form stacked MoN 1.2 ‐rGO heterostructures with massive junction interfaces for interfacial solar evaporation. Molecular dynamics simulation confirms that atomic thick 2D MoN 1.2 and rGO in the MoN 1.2 ‐rGO heterostructures simultaneously interact with water molecules, while the interactions are remarkably different. These heterogeneous interactions cause an imbalanced water state, which easily breaks the hydrogen bonds between water molecules, leading to dramatically lowered vaporization enthalpy and improved solar evaporation rate (2.6 kg m −2 h −1 ). This study provides a promising strategy for designing 2D‐2D heterostructures to regulate evaporation enthalpy to improve solar evaporate rate for clean water production.
Publisher: American Chemical Society (ACS)
Date: 18-10-2006
DOI: 10.1021/CG060439O
Publisher: Elsevier BV
Date: 10-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA03004G
Abstract: An affordable and easy-to-fabricate solar evaporation-based crystallizer (SEC) was developed to implement interfacial brine evaporation towards zero liquid discharge (ZLD).
Publisher: Tsinghua University Press
Date: 06-2023
Publisher: Wiley
Date: 15-11-2022
Abstract: Photocatalytic performance can be optimized via introduction of reactive sites. However, it is practically difficult to engineer these on specific photocatalyst surfaces, because of limited understanding of atomic‐level structure‐activity. Here we report a facile sonication‐assisted chemical reduction for specific facets regulation via oxygen deprivation on Bi‐based photocatalysts. The modified Bi 2 MoO 6 nanosheets exhibit 61.5 and 12.4 μmol g −1 for CO and CH 4 production respectively, ≈3 times greater than for pristine catalyst, together with excellent stability/reproducibility of ≈20 h. By combining advanced characterizations and simulation, we confirm the reaction mechanism on surface‐regulated photocatalysts, namely, induced defects on highly‐active surface accelerate charge separation/transfer and lower the energy barrier for surface CO 2 adsorption/activation/reduction. Promisingly, this method appears generalizable to a wider range of materials.
Publisher: American Chemical Society (ACS)
Date: 06-06-2016
Publisher: Wiley
Date: 11-05-2021
Abstract: Present one‐step N 2 fixation is impeded by tough activation of the N≡N bond and low selectivity to NH 3 . Here we report fixation of N 2 ‐to‐NH 3 can be decoupled to a two‐step process with one problem effectively solved in each step, including: 1) facile activation of N 2 to NO x − by a non‐thermal plasma technique, and 2) highly selective conversion of NO x − to NH 3 by electrocatalytic reduction. Importantly, this process uses air and water as low‐cost raw materials for scalable ammonia production under ambient conditions. For NO x − reduction to NH 3 , we present a surface boron‐rich core–shell nickel boride electrocatalyst. The surface boron‐rich feature is the key to boosting activity, selectivity, and stability via enhanced NO x − adsorption, and suppression of hydrogen evolution and surface Ni oxidation. A significant ammonia production of 198.3 μmol cm −2 h −1 was achieved, together with nearly 100 % Faradaic efficiency.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA08539A
Abstract: An interfacial gelation coating method is developed to selectively coat photothermal materials on 3D substrate surfaces which dramatically reduces the consumption of photothermal materials while delivering superior performance in solar evaporation.
Publisher: Springer Science and Business Media LLC
Date: 31-01-2017
DOI: 10.1038/SREP41895
Abstract: We present a new type of fiber-coupled photodetector with a thermal-based optical sensor head, which enables it to operate even in the presence of strong electro-magnetic interference and in electrically sensitive environments. The optical sensor head consists of three cascaded Fabry-Perot interferometers. The end-face surface is coated with copper-oxide micro-particles embedded in hydrogel, which is a new photo-thermal coating that can be readily coated on many different surfaces. Under irradiation, photons are absorbed by the photo-thermal coating, and are converted into heat, changing the optical path length of the probing light and induces a resonant wavelength shift. For white-light irradiation, the photodetector exhibits a power sensitivity of 760 pm/mW, a power detection limit of 16.4 μW (i.e. specific detectivity of 2.2 × 10 5 cm.√Hz/W), and an optical damage threshold of ~100 mW or ~800 mW/cm 2 . The response and recovery times are 3.0 s (~90% of change within 100 ms) and 16.0 s respectively.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CC46738D
Abstract: Janus-like emulsions stabilized by OH(-) and polydopamine (PDA) particles were realized. The OH(-) and particle occupied areas on emulsion droplet surfaces are spatially separated. Via controlling the pH and ionic strength, the coalescence of Janus-like emulsion droplets could be manipulated.
Publisher: Wiley
Date: 07-11-2023
DOI: 10.1002/EOM2.12302
Abstract: Direct conversion of low‐grade heat into electricity by thermal electrochemical cells is a promising strategy for energy generation. For stable heat‐to‐electricity conversion, maintaining a low‐grade heat induced temperature difference between the cell electrodes is essential. Here, a thermogalvanic cell consisting of a cellulose fiber‐based porous aerogel, a liquid electrolyte, a reduced graphene oxide light absorber, and carbon nanotube‐based electrodes is designed for low‐grade thermal energy harvesting and conversion. The low thermal conductivity of the porous cellulose aerogel enables limited heat transfer from the hot side to the cold side, and thermal energy management effectively reduces heat loss from the hot side to the environment. Thus, a sustainable temperature difference between the electrodes is maintained and a corresponding maximum power output of 6.94 mW m −2 is achieved under natural solar irradiation. The obtained thermal electrochemical cells are also integrated into an enclosed interfacial solar evaporation device to harvest the latent heat released from vapor condensation for electricity generation. In addition, the thermal electrochemical cells can be regenerated after 18 months of storage and show no performance degradation. This design thus offers a novel alternative strategy for practical low‐grade heat harvesting. image
Publisher: American Chemical Society (ACS)
Date: 03-10-2008
DOI: 10.1021/JP805359R
Publisher: Elsevier BV
Date: 04-2022
DOI: 10.1016/J.WATRES.2022.118099
Abstract: Interfacial solar steam generation is an efficient way to produce freshwater from saline water. This technology was further harnessed here for simultaneous saline soil remediation and enhanced agricultural sustainability. An interfacial solar evaporation and planting system was designed that uses treated seawater for saline soil washing and agricultural irrigation. In outdoor experiments the evaporator realized high freshwater production (10.95 kg m
Publisher: Elsevier BV
Date: 06-2019
Publisher: Elsevier BV
Date: 11-2019
Publisher: AIP
Date: 2010
DOI: 10.1063/1.3505074
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TB00603B
Abstract: Novel robust and multifunctional polymer nanofilms were prepared through facile and highly efficient covalent layer-by-layer assembly.
Publisher: American Chemical Society (ACS)
Date: 13-05-2021
DOI: 10.1021/JACS.1C03135
Publisher: American Chemical Society (ACS)
Date: 09-12-2020
DOI: 10.1021/ACSSENSORS.9B01897
Abstract: A stronger absorption of pump robe light is desirable for maximizing the sensitivity to enable accurate measurements of trace chemical elements. We introduce a new sensing technique built on light-sheet excitation of skew rays in a multimode fiber with an additional enhancement of localized surface plasmon resonance (LSPR) and its evanescent-field hotspots between gold nanospheres on the coated fiber. A skewed light-sheet (i.e., a thin plane of light) can exploit the optimum ray group, producing enhanced and uniform interactions between light and matter for higher absorption/sensitivity and higher power threshold. The heightened evanescent field couples to the localized surface plasmon resonant modes to attain even greater sensitivity. We compared this excitation method with the previously demonstrated light-sheet skew ray-based sensor without LSPR and observed an enhancement in normalized attenuation of pump light up to seven orders of magnitude for low-concentration rhodamine B. The improvement in the normalized detection limit is almost three orders of magnitude. This new sensing technique uses a functionalized fiber rather than pairing a passive fiber with added functional particles in the analyte, which offers better area-selectivity. The potentially low-cost chemical sensors can be used on a range of sensing mechanisms such as pump robe light absorption.
Publisher: American Chemical Society (ACS)
Date: 10-08-2023
Publisher: American Chemical Society (ACS)
Date: 29-12-2020
Publisher: Wiley
Date: 09-02-2007
Publisher: Elsevier BV
Date: 08-2006
Publisher: Wiley
Date: 05-09-2021
DOI: 10.1002/EOM2.12140
Abstract: Interfacial solar steam generation is a green and sustainable technology which has been intensively studied in the fields of seawater desalination and wastewater purification for clean water production. Here, this technology is further developed for soil remediation. A new photothermal evaporator is designed to accelerate the extraction of lead (Pb) from soil solution, thereby successfully rapidly remediating a Pb contaminated soil. Within 2 weeks, this solar‐driven evaporative remediation (SDER) simultaneously decreases the bioavailable Pb fraction by 38.4% (from 359 to 221 mg kg −1 ) with no excessive nutrient loss nor secondary pollution. Post remediation plant assay indicates that the treated soil is significantly less phytotoxic, with shoot/root Pb contents decreasing by 50%. Since SDER involves no external energy input other than solar irradiation ongoing operating costs are low leading to significant potential for sustainable practical applications. Overall, this study demonstrates for the first time that interfacial solar evaporation can be successfully applied to soil remediation. image
Publisher: Wiley
Date: 03-09-2007
Abstract: The shape-controlled synthesis of nano- and microstructured materials has opened up new possibilities to improve their physical and chemical properties. In this work, new types of Bi(2)WO(6) with complex morphologies, namely, flowerlike, tyre- and helixlike, and platelike shapes, have been controllably synthesized by a facile hydrothermal process. The benefits of the present work also stem from the first report on the transformation of Bi(2)WO(6) from three-dimensional (3D) flowerlike superstructures to 2D platelike structures, and on the formation of tyre- and helixlike Bi(2)WO(6) superstructures. UV/Vis absorption spectra show that the optical properties of Bi(2)WO(6) s les are relevant to their size and shape. More importantly, the photocatalytic activities of Bi(2)WO(6) nano- and microstructures are strongly dependent on their shape, size, and structure for the degradation of Rhodamine B (RhB) under visible-light irradiation. The reasons for the differences in the photocatalytic activities of these Bi(2)WO(6) nano- and microstructures are further investigated.
Start Date: 2012
End Date: 2014
Funder: Australian Research Council
View Funded ActivityStart Date: 2019
End Date: 2024
Funder: Australian Research Council
View Funded ActivityStart Date: 2009
End Date: 2010
Funder: Alexander von Humboldt Foundation
View Funded ActivityStart Date: 01-2012
End Date: 12-2015
Amount: $375,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2020
End Date: 12-2023
Amount: $890,287.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2022
End Date: 12-2025
Amount: $405,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2023
End Date: 12-2027
Amount: $5,000,000.00
Funder: Australian Research Council
View Funded Activity