ORCID Profile
0000-0002-0264-4024
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Membrane and Separation Technologies | Functional Materials | Main Group Metal Chemistry | Colloid and Surface Chemistry | Inorganic Chemistry | Chemical Engineering | Nanoscale Characterisation | Nanomanufacturing | Manufacturing Engineering | Nanotechnology | Manufacturing Processes and Technologies (excl. Textiles) | Microtechnology | Materials Engineering | Composite and Hybrid Materials | Water Treatment Processes | Condensed Matter Characterisation Technique Development |
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in Engineering | Manufacturing not elsewhere classified | Primary Mining and Extraction of Mineral Resources not elsewhere classified | Expanding Knowledge in Technology | Industrial Energy Conservation and Efficiency | Expanding Knowledge in the Chemical Sciences | Industrial Machinery and Equipment | Expanding Knowledge in the Physical Sciences | Industrial Chemicals and Related Products not elsewhere classified | Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified | Coated Metal and Metal-Coated Products
Related Links
Publications
Nano/micro plastics – Challenges on quantification and remediation: A review
Publisher: Elsevier BV
Date: 08-2021
Blood apheresis technologies – a critical review on challenges towards efficient blood separation and treatment
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1MA00859E
Abstract: This review article critically assesses materials engineering advances across blood separation technologies which addresses operating challenges such as surface fouling and material biocompatibility.
Metal organic framework based catalysts for CO2 conversion
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6MH00484A
Abstract: Metal organic frameworks (MOFs) are hybrid crystalline materials, exhibiting high specific surface areas, controllable pore sizes and surface chemistry.
Applications of Membranes for Sustainability
Publisher: MDPI AG
Date: 16-08-2021
DOI: 10.3390/MEMBRANES11080629
Abstract: Applications of membranes in water and wastewater treatment, desalination, as well as other purification processes, have become more widespread over the past few decades [...]
Insights into Free Volume Variations across Ion-Exchange Membranes upon Mixed Solvents Uptake by Small and Ultrasmall Angle Neutron Scattering
Publisher: American Chemical Society (ACS)
Date: 02-03-2017
Abstract: Ion-exchange membranes are composite separation materials increasingly used in a variety of electro-membranes and electrochemical processes. Although promising for solvent reclamation, to date, their main applications are limited to aqueous environments due to physicochemical and microstructural changes of the materials upon exposure to nonaqueous and mixed solvents solutions, affecting long-term stability and separation performance. In the present work, the structural changes of commercial and novel hybrid ion-exchange membranes in mixed methanol/water and ethanol/water solutions are assessed for the first time using ultra- and small-angle neutron scattering techniques. The interface between the ion-exchange functional layer and the mechanical support of the membranes is evaluated in the ultralow-q region, while a broad solvent-dependent peak at the mid-q region was correlated to the microstructural properties which are related to the free volume across the ion-exchange domains and to the materials electrical and nanoscale mechanical properties. The results of this study may offer new opportunities toward the development of an efficient separation process using ion-exchange membranes for the purification of fermentation broths toward biofuel generation.
In Situ Growth of Cu/CuO/Cu2O Nanocrystals within Hybrid Nanofibers for Adsorptive Arsenic Removal
Publisher: American Chemical Society (ACS)
Date: 15-09-2022
Catalytic nickel and nickel–copper alloy hollow-fiber membranes for the remediation of organic pollutants by electrocatalysis
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TA11323D
Abstract: Electrocatalytic membrane reactors are becoming a viable solution for the treatment of wastewater contaminated with persistent organic pollutants and compounds.
One-pot synthesis of catalytic molybdenum based nanocomposite nano-fiber membranes for aerosol air remediation
Publisher: Elsevier BV
Date: 2019
DOI: 10.1016/J.SCITOTENV.2018.08.050
Abstract: The development of fibrous air filters exhibiting high air filtration efficiency, low energy consumption, and self-cleaning properties is a critical challenge to generate the next generation of resilient air filtration systems. Nano-fibrous mats typically exhibit higher particle capture efficiency but may also lead to higher airflow resistance compared to macro-fibrous materials due to their tighter structure. In this paper, novel catalytic membranes mats were fabricated through a one-pot synthesis from ammonium tetrathiomolybdate (ATTM) doped poly(acrylonitrile) (PAN) nanofibers for sub-micron diameter aerosol particle removal. The presence of ATTM as a dopant in conjunction with a PAN polymeric matrix was found to not only enhance the air filtration performance by increasing aerosol particle removal down to 300 nm, but also increase the photocatalytic properties of the PAN material. The enhanced separation properties compared to bare polymeric PAN nanofibrous membranes were attributed to surface nanotexturation of the fibers, leading to protrusions and pores across the nano-fiber structures, thus leading to more permeable and lightweight membranes with higher particle capture capacities. The s les were benchmarked against commercial glass fiber air filters and found to offer higher filtration efficiency, lower pressure drop, and higher quality factor than the commercial filters. Specifically, the quality factors of the catalytic nano-fiber membranes were found to be up to four times higher than that of the benchmarked commercial air filters for PM
Photocatalytic-triggered nanopores across multilayer graphene for high-permeation membranes
Publisher: Elsevier BV
Date: 09-2022
UV-assisted Fabrication of Green Quality rGO with Wavelength-dependant Properties
Publisher: American Chemical Society (ACS)
Date: 20-12-2019
An in-situ small angle x ray scattering analysis of nanopore formation during thermally induced chemical dealloying of brass thin foils
Publisher: Springer Science and Business Media LLC
Date: 18-10-2018
DOI: 10.1038/S41598-018-33787-Z
Abstract: The development of non-noble nano-porous metal materials is hindered by surface oxidation reactions and from the difficulty to generate long range order pore arrays. Dealloying is a promising route to generate such materials by selective chemical etching of metal alloy materials. This process can generate nano-metal materials with superior plasmonic, catalytic and adsorptive surface properties. Here, the impact of properties of the etching solution on the dealloying process to generate nano-pores across thin film alloys was investigated by in-situ SAXS dealloying experiments. Single phase CuZn alloys were used as model materials to evaluate the influence of the solution temperature on the pore formation kinetics. This novel analysis allowed to visualize the change in surface properties of the materials over time, including their surface area as well as their pore and ligament sizes. The dealloying kinetics at the very early stage of the process were found to be critical to both stable pore formation and stabilization. SAXS in-situ data were correlated to the morphological properties of the materials obtained from ex-situ s les by Rutherford back scattering and scanning electron microscopy.
Schottky-like photo/electro-catalytic carbon nanotube composite ultrafiltration membrane reactors
Publisher: Elsevier BV
Date: 02-2023
Electro-Driven Materials and Processes for Lithium Recovery—A Review
Publisher: MDPI AG
Date: 18-03-2022
DOI: 10.3390/MEMBRANES12030343
Abstract: The mass production of lithium-ion batteries and lithium-rich e-products that are required for electric vehicles, energy storage devices, and cloud-connected electronics is driving an unprecedented demand for lithium resources. Current lithium production technologies, in which extraction and purification are typically achieved by hydrometallurgical routes, possess strong environmental impact but are also energy-intensive and require extensive operational capabilities. The emergence of selective membrane materials and associated electro-processes offers an avenue to reduce these energy and cost penalties and create more sustainable lithium production approaches. In this review, lithium recovery technologies are discussed considering the origin of the lithium, which can be primary sources such as minerals and brines or e-waste sources generated from recycling of batteries and other e-products. The relevance of electro-membrane processes for selective lithium recovery is discussed as well as the potential and shortfalls of current electro-membrane methods.
Sub-10-nm Mixed Titanium/Tantalum Oxide Nanoporous Films with Visible-Light Photocatalytic Activity for Water Treatment
Publisher: American Chemical Society (ACS)
Date: 06-03-2019
Nano/microplastics in water and wastewater treatment processes – Origin, impact and potential solutions
Publisher: Elsevier BV
Date: 09-2019
DOI: 10.1016/J.WATRES.2019.06.049
Abstract: The presence of nano and microplastics in water has increasingly become a major environmental challenge. A key challenge in their detection resides in the relatively inadequate analytical techniques available preventing deep understanding of the fate of nano/microplastics in water. The occurrence of nano/microplastics in water and wastewater treatment plants poses a concern for the quality of the treated water. Due to their broad but small size and erse chemical natures, nano/microplastics may travel easily along water and wastewater treatment processes infiltrating remediation processes at various levels, representing operational and process stability challenges. This review aims at presenting the current understanding of the fate and impact of nano/microplastics through water and wastewater treatment plants. The formation and fragmentation mechanisms, physical-chemical properties and occurrence of nano/microplastics in water are correlated to the interactions of nano/microplastics with water and wastewater treatment plant processes and potential solutions to limit these interactions are comprehensively reviewed. This critical analysis offers new strategies to limit the number of nano/microplastics in water and wastewater to keep water quality up to the required standards and reduce threats on our ecosystems.
Release of hazardous nanoplastic contaminants due to microplastics fragmentation under shear stress forces
Publisher: Elsevier BV
Date: 02-2020
DOI: 10.1016/J.JHAZMAT.2019.121393
Abstract: The presence of nanoplastics in water has become a major environmental concern in the last decade however the knowledge on the origin and formation of these emerging contaminants is lacking due to analytical challenges in detection and quantification techniques. The release of nanoplastics due to the fragmentation of microplastics extracted from a facial scrub and the resulting toxicity on aquatic species are reported here for the first time. The daily use of 4 g of facial scrub could release up to 10
Thin film nanocomposite nanofiltration membranes from amine functionalized-boron nitride/polypiperazine amide with enhanced flux and fouling resistance
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA03446J
Abstract: Thin film composite (TFC) nanofiltration (NF) membranes typically used for drinking water treatment applications are susceptible to fouling by natural organic matter (NOM) which adversely affects the permeation and separation efficacy.
3D printing for the integration of porous materials into miniaturised fluidic devices: A review
Publisher: Elsevier BV
Date: 11-2021
Insights into Surface Interactions between Metal Organic Frameworks and Gases during Transient Adsorption and Diffusion by In-Situ Small Angle X-ray Scattering
Publisher: MDPI AG
Date: 03-09-2016
Abstract: The fabrication of molecular gas sieving materials with specific affinities for a single gas species and able to store large quantities of materials at a low or atmospheric pressure is desperately required to reduce the adverse effects of coal and oil usage in carbon capture. Fundamental understanding of the dynamic adsorption of gas, the diffusion mechanisms across thin film membranes, and the impact of interfaces play a vital role in developing these materials. In this work, single gas permeation tests across micro-porous membrane materials, based on metal organic framework crystals grown on the surface of carbon nanotubes (ZiF-8@CNT), were performed for the first time in-situ at the Australian Synchrotron on the small angle X-ray scattering beamline in order to reveal molecular sieving mechanisms and gas adsorption within the material. The results show that specific chemi-sorption of CO2 across the ZiF-8 crystal lattices affected the morphology and unit cell parameters, while the sieving of other noble or noble like gases across the ZiF-8@CNT membranes was found to largely follow Knudsen diffusion. This work demonstrates for the first time a novel and effective technique to assess molecular diffusion at the nano-scale across sub-nano-porous materials by probing molecular flexibility across crystal lattice and single cell units.
Enhanced Visible Light Sensitization of N-Doped TiO2 Nanotubes Containing Ti-Oxynitride Species Fabricated via Electrochemical Anodization of Titanium Nitride
Publisher: American Chemical Society (ACS)
Date: 18-12-2019
Inorganic Nanoparticles/Metal Organic Framework Hybrid Membrane Reactors for Efficient Photocatalytic Conversion of CO2
Publisher: American Chemical Society (ACS)
Date: 29-09-2017
Abstract: Photocatalytic conversion of carbon dioxide (CO
Engineering Schottky-like and heterojunction materials for enhanced photocatalysis performance – a review
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA01062J
Abstract: Photocatalysis with nanostructured semiconductors is emerging for environmental remediation.
Nano–Enabled sensors for detection of arsenic in water
Publisher: Elsevier BV
Date: 2021
Atomically-thin Schottky-like photo-electrocatalytic cross-flow membrane reactors for ultrafast remediation of persistent organic pollutants
Publisher: Elsevier BV
Date: 06-2022
DOI: 10.1016/J.WATRES.2022.118519
Abstract: The remediation of persistent organic pollutants in surface and ground water represents a major environmental challenge worldwide. Conventional physico-chemical techniques do not efficiently remove such persistent organic pollutants and new remediation techniques are therefore required. Photo-electro catalytic membranes represent an emerging solution that can combine photocatalytic and electrocatalytic degradation of contaminants along with molecular sieving. Herein, macro-porous photo-electro catalytic membranes were prepared using conductive and porous stainless steel metal membranes decorated with nano coatings of semiconductor photocatalytic metal oxides (TiO
2D nanosheet enabled thin film nanocomposite membranes for freshwater production – a review
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1MA00256B
Abstract: This review presents state-of-the-art progress in 2D-enabled TFN membranes for RO and NF applications in water treatment with emphasis on impact of 2D nanosheet on membrane properties, performance, and its associated challenges.
Metal alloy solid-state nanopores for single nanoparticle detection
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CP01787E
Abstract: We design metal alloy nanopore to detect nanoparticle and propose an original model to estimate the relative current blockade.
Dual Functional Ultrafiltration Membranes with Enzymatic Digestion and Thermo-Responsivity for Protein Self-Cleaning
Publisher: MDPI AG
Date: 24-08-2018
DOI: 10.20944/PREPRINTS201808.0428.V1
Abstract: Controlling surface-protein interaction during wastewater treatment is the key motivation for developing functionally modified membranes. A new biocatalytic thermo-responsive poly(vinylidene fluoride)(PVDF)/nylon-6,6 oly(N-isopropylacrylamide)(PNIPAAm) ultrafiltration membrane was fabricated to achieve dual functionality of protein-digestion and thermo-responsive self-cleaning. The PVDF/nylon-6,6/PNIPAAm composite membranes were constructed by integrating a hydrophobic PVDF cast layer and hydrophilic nylon-6,6/PNIPAAm nanofiber layer where trypsin enzymes were covalently immobilized. The immobilization density of enzymes on the membrane surface decreased with increasing PNIPAAm concentration, due to the decreased number of amine functional sites. Through a ultrafiltration study using a model solution containing BSA/NaCl/CaCl2, the PNIPAAm containing biocatalytic membranes demonstrated a combined effect of enzymatic and thermo-switchable self-cleaning. The membrane without PNIPAAm revealed superior fouling resistance and self-cleaning with an RPD of 22%, compared to membranes with 2 and 4 wt% PNIPAAm with 26% and 33% RPD, respectively, after an intermediate temperature cleaning at 50& deg C, indicating that higher enzyme density offers more efficient self-cleaning than the combined effect of enzyme and PNIPAAm at low concentration. The conformational volume phase transition of PNIPAAm did not affect the stability of immobilized trypsin on membrane surface. Such novel surface engineering design offer a promising route to severe surface-protein contamination remediation in food and wastewater applications.
Electro-catalytic membrane reactors for the degradation of organic pollutants-A review
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1RE00091H
Abstract: Electro-catalytic membrane reactor exhibiting electro-oxidation degradation of organic pollutants on anodic membrane.
Tuning CO2 conversion product selectivity of metal organic frameworks derived hybrid carbon photoelectrocatalytic reactors
Publisher: Elsevier BV
Date: 07-2019
Nano-enabled sensing of per-/poly-fluoroalkyl substances (PFAS) from aqueous systems – A review
Publisher: Elsevier BV
Date: 04-2022
DOI: 10.1016/J.JENVMAN.2022.114655
Abstract: Per- oly-fluoroalkyl substances (PFAS) are an emerging class of environmental contaminants used as an additive across various commodity and fire-retardant products, for their unique thermo-chemical stability, and to alter their surface properties towards selective liquid repellence. These properties also make PFAS highly persistent and mobile across various environmental compartments, leading to bioaccumulation, and causing acute ecotoxicity at all trophic levels particularly to human populations, thus increasing the need for monitoring at their repositories or usage sites. In this review, current nano-enabled methods towards PFAS sensing and its monitoring in wastewater are critically discussed and benchmarked against conventional detection methods. The discussion correlates the materials' properties to the sensitivity, responsiveness, and reproducibility of the sensing performance for nano-enabled sensors in currently explored electrochemical, spectrophotometric, colorimetric, optical, fluorometric, and biochemical with limits of detection of 1.02 × 10
A “Green” Stirring Plasma Functionalization Strategy for Controllable Oxygen-Containing Functional Groups on Octa-Methyl POSS Microstructure
Publisher: MDPI AG
Date: 16-10-2023
DOI: 10.3390/NANO13202770
Flexible and reusable carbon nano-fibre membranes for airborne contaminants capture
Publisher: Elsevier BV
Date: 02-2021
Fabrication of Pd-TiO2 nanotube photoactive junctions via Atomic Layer Deposition for persistent pesticide pollutants degradation
Publisher: Elsevier BV
Date: 07-2019
3D Printing Functionally Graded Porous Materials for Simultaneous Fabrication of Dense and Porous Structures in Membrane‐Integrated Fluidic Devices
Publisher: Wiley
Date: 17-01-2023
Abstract: 3D printing provides access to complex multilevel architectures, though the capability to routinely print and integrate structures of controlled porosity is limited. Herein, grayscale digital light projection 3D printing of a polymerization‐induced phase separation ink is introduced to directly 3D print functionally graded porous within a single layer from the same ink formulation. The structural properties of materials printed from a single ink are tuned from an effectively dense to a porous material with interconnected pores up to 250 nm. Heterostructures with the physically dense structure of porosity 0.8% and porous structures with up to 23% can be concurrently formed within a layer, with high spatial resolution inherent of this 3D printing technique. Materials with densities from 1.01 to 1.21 g cm −3 are 3D printed in a wicking device and show wicking rates (H 2 O) from complete diffusion blockage up to 4.5 mm h −1 . Furthermore, a proof‐of‐concept membrane‐integrated fluidic device is used for the elemental metal sensing of iron in soil. The presented single‐step fabrication of functionally graded materials with pixel‐based control within a single layer holds potential for manufacturing and integrating membranes or sorbents for environmental, biotechnology, and healthcare applications.
Controlled porosity and pore size of nano-porous gold by thermally assisted chemical dealloying - a SAXS study
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6RA28423J
Abstract: Nano-porous metals offer great potential for applications such as bio-sensors, chemical reactors, platforms for cell growth, and media for separation because of their high surface area and reactivity at the nanoscale.
Smart electrically responsive hybrid ion-selective membranes for selective gated transport of ionic species
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8MH00652K
Abstract: Gate-keeper ion exchange membranes with up to 6 fold increase in ionic diffusion are designed by controlling the pseudo-capacitance and resistance of hybrid semi-permeable membranes.
Mixed Matrix Poly(Vinyl Alcohol)-Copper Nanofibrous Anti-Microbial Air-Microfilters
Publisher: MDPI AG
Date: 17-07-2019
Abstract: Membranes decorated with biocide materials have shown great potential for air sanitization but can suffer from biocide agent leaching by dissolution in water. In order to tackle the diffusion of biocide metal ions from the fiber matrix, composite nanofiber membranes of poly(vinyl alcohol) (PVA) cross-linked with copper (II) acetate have been successfully engineered via sol–gel electrospinning, providing a stable mean for air bactericidal microfiltration. The novelty lies in the bonding strength and homogeneous distribution of the fiber surface biocide, where biocide metals are incorporated as a sol within a polymer matrix. The electrospinning of bead-free composite nanofibers offered over 99.5% filtration efficiency for PM2.5, with a theoretical permeance above 98%. The PVA/copper nanofiber membranes also showed satisfactory anti-bacterial performance against the gram-negative Escherichia coli within 24 h, making them promising materials for the remediation of airborne bacteria. The mechanical and chemical stability of the engineered nanocomposite electrospun nanofiber webs added to the natural biodegradability of the materials, by offering ideal low-cost sanitary solutions for the application of air disinfection in both indoor and outdoor fitting a circular economy strategy where advanced materials are redesigned to be sustainable.
Predicting Operating Rules for Successful Melt Electrowriting
Publisher: American Chemical Society (ACS)
Date: 26-03-2021
Single step synthesis of Janus nano-composite membranes by atmospheric aerosol plasma polymerization for solvents separation
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.SCITOTENV.2018.06.343
Abstract: Solvent permeation across membranes is limited due to physical resistance to diffusion from the selective layer within the membrane and to plasticizing effects generated by the solvent molecules onto the polymeric macromolecular matrix. Nano-composite thin film membranes provide promising routes to generate controlled microstructural separation materials with higher selectivities and permeabilities. Here, the fabrication of nano-composite based on octamethyl-polyhedral oligomeric silsesquioxane - hexamethyldisiloxane thin film membranes is demonstrated by aerosol assisted atmospheric plasma deposition onto pre-formed nano-porous membrane supports for the first time. Stable, atomically smooth and continuous solid films with controllable thickness down to 50 nm were achieved. The deposition process allowed for the control of the wettability of the surfaces to water and organic solvents, leading to the generation of hydrophobic but alcohol-philic surfaces. The liquid entry pressure of the films to water was found to be 8 bar from plasma polymerization as oppose to 3 bar for the bare nano-porous support only. In addition, the ideal separation selectivity for ethanol to water, up to 6.5, highlight the impact of both the surface energy and level of cross-linking of the hexamethyldisiloxane nanostructures on the diffusion mechanisms. This new atmospheric plasma deposition strategy opens-up cost-effective and environmentally friendly routes for the design of the smart Janus membrane with customizable properties and performance.
3D printed integrated nanoporous membranes for electroextraction of DNA
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2NR07178A
Abstract: 3D printed functionally integrated device containing nanoporous membranes with properties tailored for the electroextraction of DNA.
Discrete silver nanoparticle infusion across silica aerogels towards versatile catalytic coatings for 4-nitrophenol reduction
Publisher: Elsevier BV
Date: 02-2019
3D Printing: An Alternative Microfabrication Approach with Unprecedented Opportunities in Design
Publisher: American Chemical Society (ACS)
Date: 02-12-2021
Tuning micro-wrinkled graphene films for stretchable conductors of controllable electrical conductivity
Publisher: Elsevier BV
Date: 11-2018
Downsizing metal-organic frameworks by bottom-up and top-down methods
Publisher: Springer Science and Business Media LLC
Date: 04-09-2020
DOI: 10.1038/S41427-020-00240-5
Abstract: Downsizing metal–organic framework (MOF) crystals into the nanoregime offers a promising approach to further benefit from their inherent versatile pore structures and surface reactivity. In this article, downsizing is referred to as the deliberate production of typical large MOF crystals into their nanosized versions. Here, we discuss various strategies towards the formation of crystals below 100 nm and their impact on the nano-MOF crystal properties. Strategies include an adjustment of the synthesis parameters (e.g., time, temperature, and heating rate), surface modification, ligand modulation, control of solvation during crystal growth and physical grinding methods. These approaches, which are categorized into bottom-up and top-down methods, are also critically discussed and linked to the kinetics of MOF formation as well as to the homogeneity of their size distribution and crystallinity. This collection of downsizing routes allows one to tailor features of MOFs, such as the morphology, size distribution, and pore accessibility, for a particular application. This review provides an outlook on the enhanced performance of downsized MOFs along with their potential use for both existing and novel applications in a variety of disciplines, such as medical, energy, and agricultural research.
Nanofiber Composite Membrane with Intrinsic Janus Surface for Reversed-Protein-Fouling Ultrafiltration.
Publisher: American Chemical Society (ACS)
Date: 16-05-2017
Abstract: Janus nanofiber based composite ultrafiltration (UF) membranes were fabricated via a two-step method, i.e., consecutive electrospinning of hydrophilic nylon-6,6/chitosan nanofiber blend and conventional casting of hydrophobic poly(vinylidene difluoride) (PVDF) dope solution. The as-developed PVDF/nylon-6,6/chitosan membranes were investigated for its morphology using Scanning Electron Microscopy (SEM) by which 18 wt % PVDF was chosen as the optimum base polymer concentration due to optimal degree of integration of cast and nanofiber layers. This membrane was benchmarked against the pure PVDF and PVDF/nylon-6,6 membranes in terms of surface properties, permeability, and its ability to reverse protein fouling. The improved hydrophilicity of the PVDF/nylon-6,6/chitosan membrane was revealed from the 72% reduction in the initial water contact angle compared to the pure PVDF benchmark, due to the incorporation of intrinsic hydrophilic hydroxyl and amine functional groups on the membrane surface confirmed by FTIR. The integration of the nanofiber and cast layers has led to altered pore arrangements offering about 93% rejection of bovine serum albumin (BSA) proteins with a permeance of 393 L·m
Hierarchical hollow metal nanostructure arrays for selective CO2 conversion
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA01142A
Abstract: Metal hollow nanostructures have a wide range of potential applications in energy storage and conversion, owing to their low density, high surface to volume ratio, and high contact surface area.
Carbon nanofibre microfiltration membranes tailored by oxygen plasma for electrocatalytic wastewater treatment in cross-flow reactors
Publisher: Elsevier BV
Date: 05-2023
Single step synthesis of Schottky-like hybrid graphene - titania interfaces for efficient photocatalysis
Publisher: Springer Science and Business Media LLC
Date: 25-05-2018
DOI: 10.1038/S41598-018-26447-9
Abstract: The development of 2D nanomaterial coatings across metal surfaces is a challenge due to the mismatch between the metal microstructure and the nanoscale materials. The naturally occurring thin oxidative layer present across all metal surfaces, may lead to low adherence and connectivity. In this paper, graphene/titania/Titanium hybrid films were for the first time fabricated by a single step chemical vapour deposition process across Titanium foils. The presence of graphene as a dopant was found to enhance the photocatalytic performance of the final products, applied to the degradation of organic molecules and to lead to Schottky-like junction formation at the metal/oxide interface. These Schottky junctions, where vacancies are present across the titania material due to the graphene doping and where Ti 3+ ions are predominantly located, yield enhanced catalytic performance. The highest degradation rate was found to be 9.66 × 10 −6 min −1 , achieved by the s le grown at 700 °C for 5 min, which was 62% higher than the s le just treated at that temperature without graphene growth. This work provides evidence that graphene may be grown across pure Titanium metal and opens new avenues in biomedical devices design, tribological or separation applications.
In Situ SAXS Measurement and Molecular Dynamics Simulation of Magnetic Alignment of Hexagonal LLC Nanostructures
Publisher: MDPI AG
Date: 05-10-2018
DOI: 10.20944/PREPRINTS201810.0110.V1
Abstract: The alignment of nanostructures in materials such as lyotropic liquid crystals (LLCs) templated materials has the potential to signicantly improve their performances. However, accurately characterising and quantifying the alignement of such fine structures remains very challenging. In situ small angle X-ray scattering (SAXS) and molecular dynamics were employed for the first time to understand the hexagonal LLC alignment process with magnetic nanoparticles under a magnetic field. The enhanced alignment has been illustrated from the distribution of azimuthal intensity in the s les exposed to magnetic field. Molecular dynamics simulations reveal the relationship between the imposed force of the magenetic nanoparticles under magnetic field and the force transferred to the LLC cylinders which leads to the LLC alignment. The combinational study with experimental measurement and computational simulation will enable the development and control of nanostructures in novel materials for various applications.
Photo-responsive metal–organic frameworks – design strategies and emerging applications in photocatalysis and adsorption
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2MA01022D
Abstract: The emergence of light-responsive metal–organic frameworks represents an opportunity for stimuli responsive platform design for environmental applications.
Strategies for Integrated Capture and Conversion of CO2 from Dilute Flue Gases and the Atmosphere
Publisher: Wiley
Date: 05-03-2021
A review on the sources, occurrence and health risks of per-/poly-fluoroalkyl substances (PFAS) arising from the manufacture and disposal of electric and electronic products
Publisher: Elsevier BV
Date: 12-2020
Surface-Engineered Biocatalytic Composite Membranes for Reduced Protein Fouling and Self-Cleaning.
Publisher: American Chemical Society (ACS)
Date: 26-07-2018
Abstract: A new biocatalytic nanofibrous composite ultrafiltration membrane was developed to reduce protein fouling interactions and self-clean the membrane surface. The dual-layer poly(vinylidenefluoride)/nylon-6,6/chitosan composite membrane contains a hydrophobic poly(vinylidenefluoride) cast support layer and a hydrophilic functional nylon-6,6/chitosan nanofibrous surface layer where enzymes were chemically attached. The intrinsic surface chemistry and high surface area of the nanofibers allowed optimal and stable immobilization of trypsin (TR) and α-chymotrypsin enzymes via direct covalent binding. The enzyme immobilization was confirmed by X-ray photoelectron spectroscopy and visualized by confocal microscopy analysis. The prepared biocatalytic composite membranes were nanoporous with superior permeability offering stable protein antiadhesion and self-cleaning properties owing to the repulsive mechanism and digestion of proteins into peptides and amino acids, which was quantified by the gel electrophoresis technique. The TR-immobilized composite membranes exhibited 2.7-fold higher permeance and lower surface protein contamination with 3-fold greater permeance recovery, when compared to the pristine membrane after two ultrafiltration cycles with the model feed solution containing bovine serum albumin/NaCl/CaCl
Polyhedral Oligomeric Silsesquioxane (POSS) Nano-Composite Separation Membranes − A Review
Publisher: Wiley
Date: 19-11-2018
Novel thin film nanocomposite membranes decorated with few-layered boron nitride nanosheets for simultaneously enhanced water flux and organic fouling resistance
Publisher: Elsevier BV
Date: 09-2019
Applications of nano-porous graphene materials - critical review on performance and challenges
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9MH01570A
Abstract: A critical review on the potential of nano-porous graphene materials, their key structural and physicochemical properties for applications in the areas of separation and sensing and energy storage.
Preparation of Porous Stainless Steel Hollow-Fibers through Multi-Modal Particle Size Sintering towards Pore Engineering
Publisher: MDPI AG
Date: 04-08-2017
Related Organisations
No related organisations have been discovered for Ludovic (ludo) DUMEE.
Related Funding Activities
Discovery Early Career Researcher Award - Grant ID: DE180100130
Start Date: 05-2018
End Date: 10-2020
Amount: $368,446.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE200100168
Start Date: 06-2020
End Date: 09-2023
Amount: $550,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE180100150
Start Date: 05-2018
End Date: 12-2019
Amount: $595,280.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP140100374
Start Date: 01-2015
End Date: 12-2018
Amount: $310,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Research Hubs - Grant ID: IH170100009
Start Date: 12-2017
End Date: 12-2023
Amount: $4,000,000.00
Funder: Australian Research Council
View Funded Activity