ORCID Profile
0000-0001-7104-4893
Current Organisation
Deakin University
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Publisher: American Chemical Society (ACS)
Date: 05-06-2020
Publisher: Elsevier BV
Date: 11-2016
Publisher: Elsevier BV
Date: 10-2022
Publisher: Wiley
Date: 13-06-2022
Abstract: Higher‐metal (HM) nitrides are a fascinating family of materials being increasingly researched due to their unique physical and chemical properties. However, few focus on investigating their application in a solar steam generation because the controllable and large‐scale synthesis of these materials remains a significant challenge. Herein, it is reported that higher‐metal molybdenum nitride nanosheets (HM‐Mo 5 N 6 ) can be produced at the gram‐scale using amine‐functionalized MoS 2 as precursor. The first‐principles calculation confirms amine‐functionalized MoS 2 nanosheet effectively lengthens the bonds of MoS leading to a lower bond binding energy, promoting the formation of MoN bonds and production of HM‐Mo 5 N 6 . Using this strategy, other HM nitride nanosheets, such as W 2 N 3 , Ta 3 N 5 , and Nb 4 N 5 , can also be synthesized. Specifically, under one simulated sunlight irradiation (1 kW m ‐2 ), the HM‐Mo 5 N 6 nanosheets are heated to 80 °C within only ≈24 s (0.4 min), which is around 78 s faster than the MoS 2 s les (102 s/1.7 min). More importantly, HM‐Mo 5 N 6 nanosheets exhibit excellent solar evaporation rate (2.48 kg m ‐2 h ‐1 ) and efficiency (114.6%), which are 1.5 times higher than the solar devices of MoS 2 /MF.
Publisher: American Chemical Society (ACS)
Date: 12-11-2020
Publisher: American Chemical Society (ACS)
Date: 15-09-2020
Publisher: Elsevier BV
Date: 03-2020
Publisher: American Chemical Society (ACS)
Date: 15-07-2021
Publisher: Informa UK Limited
Date: 2016
DOI: 10.1252/JCEJ.15WE064
Publisher: Wiley
Date: 29-12-2023
Abstract: Two‐dimensional (2D) transition metal dichalcogenides and graphene have revealed promising applications in optoelectronic and energy storage and conversion. However, there are rare reports of modifying the light‐to‐heat transformation via preparing their heterostructures for solar steam generation. In this work, commercial WS 2 and sucrose are utilized as precursors to produce 2D WS 2 ‐O‐doped‐graphene heterostructures (WS 2 ‐O‐graphene) for solar water evaporation. The WS 2 ‐O‐graphene evaporators demonstrate excellent average water evaporation rate (2.11 kg m −2 h −1 ) and energy efficiency (82.2%), which are 1.3‐ and 1.2‐fold higher than WS 2 and O‐doped graphene‐based evaporators, respectively. Furthermore, for the real seawater with different pH values (pH 1 and 12) and rhodamine B pollutants, the WS 2 ‐O‐graphene evaporators show great average evaporation rates (≈2.08 and 2.09 kg m −2 h −1 , respectively) for producing freshwater with an extremely low‐grade of dye residual and nearly neutral pH values. More interestingly, due to the self‐storage water ability of WS 2 ‐O‐graphene evaporators, water evaporation can be implemented without the presence of bulk water. As a result, the evaporation rate reaches 3.23 kg m −2 h −1 , which is ≈1.5 times higher than the regular solar water evaporation system. This work provides a new approach for preparing 2D transition metal dichalcogenides and graphene heterostructures for efficient solar water evaporation.
Publisher: American Chemical Society (ACS)
Date: 22-07-2022
DOI: 10.1021/JACS.2C04663
Abstract: Introducing alien intercalations to sub-nanometer scale nanochannels is one desirable strategy to optimize the ion transportation of two-dimensional nanomaterial membranes for improving osmotic energy harvest (OEH). Diverse intercalating agents have been previously utilized to realize this goal in OEH, but with modest performance, complex operations, and physicochemical uncertainty gain. Here, we employ the self-exfoliation behavior of oxidative fragments (OFs) from graphene oxide basal plane under an alkaline environment to encapsulate detached OFs in nanochannels for breaking a trade-off between permeability and selectivity, boosting power density from 1.8 to 4.9 W m
Publisher: American Chemical Society (ACS)
Date: 24-03-2021
DOI: 10.1021/JACS.1C00575
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA03620B
Abstract: High-energy asymmetric micro-supercapacitors have been fabricated with ersified planar geometries.
Publisher: Elsevier BV
Date: 10-2022
Publisher: Wiley
Date: 09-09-2020
Publisher: Wiley
Date: 10-2021
Abstract: Harvesting osmotic energy from industrial wastewater is an often‐overlooked source of electricity that can be used as a part of the comprehensive distributed energy systems. However, this concept requires, a new generation of inexpensive ion‐selective membranes that must withstand harsh chemical conditions with both high/low pH, have high temperature resilience, display exceptional mechanical properties, and support high ionic conductance. Here, aramid nanofibers (ANFs) based membranes with high chemical/thermal stability, mechanical strength, toughness, and surface charge density make them capable of high‐performance osmotic energy harvesting from pH gradients generated upon wastewater dilution. ANF membranes produce an averaged output power density of 17.3 W m −2 for more than 240 h at pH 0. Taking advantage of the high temperature resilience of aramid, the output power density is increased further to 77 W m −2 at 70 °C, typical for industrial wastewater. Such output power performance is 10× better compared to the current state‐of‐the‐art membranes being augmented by Kevlar‐like environmental robustness of ANF membranes. The improved efficiency of energy harvesting is ascribed to the high proton selectivity of ANFs. Retaining high output power density for large membrane area and fluoride‐free synthesis of ANFs from recyclable material opens the door for scalable wastewater energy harvesting.
Publisher: Elsevier BV
Date: 12-2016
Publisher: Elsevier BV
Date: 07-2022
Publisher: Wiley
Date: 07-12-2023
Abstract: 2D nanostructured materials have been applied for water purification in the past decades due to their excellent separation and adsorption performance. However, the functional 2D nanostructured molybdenum trioxide (MoO 3 )has rarely been reported for the removal of dyes. Here, functionalized MoO 3 (F‐MoO 3 ) nanosheets are successfully fabricated with a high specific surface area (106 cc g −1 ) by a one‐step mechanochemical exfoliation method as a highly effective adsorbent for removing dyes from water. According to the Raman, X‐ray photoelectron spectroscopy, Fourier transform infrared (FTIR), and selected area electron diffraction analysis, functional groups (hdroxyl groups, amide groups, amine groups and amino groups) are identified in the as‐prepared F‐MoO 3 nanosheets. The attached functional groups not only facilitate the dispersal ability of F‐MoO 3 nanosheets but also enhance the adsorption capacities. Thus, the performance (up to 556 mg g −1 when the initial concentration of Rhodamine B solution is 100 mg L −1 ) of as‐prepared F‐MoO 3 nanosheets is almost two times higher than other reported MoO 3 materials. Furthermore, the FTIR spectra, isotherm, and several factors (e.g., adsorbent dosage and adsorbate dosage) are also systematically investigated to explore the adsorption mechanism. Therefore, this work demonstrates that the F‐MoO 3 nanosheets are a promising candidate for wastewater treatment.
Publisher: Wiley
Date: 15-04-2020
Publisher: Wiley
Date: 16-03-2020
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 03-2023
Publisher: Wiley
Date: 08-08-2022
Abstract: Inadequate mass transportation of semipermeable membranes causes poor osmotic energy conversion from salinity‐gradient. Here, the lamellar graphene oxide membranes (GOMs) constructed with numerous fusiform‐like nanochannels, that are pre‐filled with negatively charged polyanion electrolytes, to both enhance the ion permeability and ion selectivity of the membrane for energy harvest from the salinty gradient, were developed. The as‐prepared membrane achieved the maximum output power density of ∼4.94 W m −2 under a 50 fold salinity gradient, which is 3.5 fold higher than that of pristine GOM. The enhancement could be ascribed to the synergistic impact of the expanded nanochannels and the enhanced space charge density. Via feeding with the artificial salinity water and monovalent cation electrolytes, the system could realise the power output up to 14.7 W m −2 and 34.1 W m −2 , respectively. Overall, this material design strategy could provide an alternative concept to effectively enhance ion transport of other two‐dimensional (2D) membranes for specific purposes.
Publisher: American Chemical Society (ACS)
Date: 19-07-2019
Abstract: Porous membranes play an important role in the separation technologies such as gas purification, solute nanofiltration, and desalination. An ideal membrane should be thin to maximize permeation speed, have optimum pore sizes to maximize selectivity, and be stable in various harsh conditions. Here, we show that the nanometer-thick membrane prepared by means of filtration of functionalized boron nitride (FBN) water suspensions can block solutes with hydrated radii larger than 4.3 Å in water. The FBN membranes with abundant nanochannels reduce the path length of ions. As molecular sieves, the FBN membrane can permeate small ions at an ultrahigh rate-a 25-fold enhancement compared with that of its theoretical diffusion rate and much higher than the graphene oxide membrane. Importantly, the FBN membrane exhibits excellent permeability even when it is immersed in acidic, alkaline, and basic salts solutions because of its intrinsic chemical stability. The molecular dynamics simulations further confirmed that the nanocapillaries formed within the FBN membrane in the hydrated state were responsible for high permeation performance. The simple vacuum filtration fabricated FBN membrane with angstrom-sized channels and ultrafast permeation of ions promises great potential applications in the areas of barrier separation and water purification.
Publisher: Springer Science and Business Media LLC
Date: 11-05-2015
DOI: 10.1557/JMR.2015.115
Publisher: American Chemical Society (ACS)
Date: 31-03-2021
Publisher: Elsevier BV
Date: 08-2022
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 09-2023
No related grants have been discovered for GUOLIANG YANG.