ORCID Profile
0000-0001-5631-0620
Current Organisation
City University of Hong Kong
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Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA00934F
Abstract: The photoactivity of rhombic dodecahedral Cu 2 O with dominant {110} facets is superior to that of cubic Cu 2 O with {100} surfaces partly owing to the improved charge separation and carrier mobility.
Publisher: IOP Publishing
Date: 22-06-2022
Abstract: Renewable fuel generation is essential for a low carbon footprint economy. Thus, over the last five decades, a significant effort has been dedicated towards increasing the performance of solar fuels generating devices. Specifically, the solar to hydrogen efficiency of photoelectrochemical cells has progressed steadily towards its fundamental limit, and the faradaic efficiency towards valuable products in CO 2 reduction systems has increased dramatically. However, there are still numerous scientific and engineering challenges that must be overcame in order to turn solar fuels into a viable technology. At the electrode and device level, the conversion efficiency, stability and products selectivity must be increased significantly. Meanwhile, these performance metrics must be maintained when scaling up devices and systems while maintaining an acceptable cost and carbon footprint. This roadmap surveys different aspects of this endeavor: system benchmarking, device scaling, various approaches for photoelectrodes design, materials discovery, and catalysis. Each of the sections in the roadmap focuses on a single topic, discussing the state of the art, the key challenges and advancements required to meet them. The roadmap can be used as a guide for researchers and funding agencies highlighting the most pressing needs of the field.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8CS00882E
Abstract: This review summarizes current experimental techniques, including the conventional and the state-of-the-art tools, to examine the key aspects of photocatalysts.
Publisher: American Chemical Society (ACS)
Date: 03-09-2021
Publisher: Wiley
Date: 28-07-2021
Abstract: Bismuth tungstate (Bi 2 WO 6 ) thin film photoanode has exhibited an excellent photoelectrochemical (PEC) performance when the tungsten (W) concentration is increased during the fabrication. Plate‐like Bi 2 WO 6 thin film with distinct particle sizes and surface area of different exposed facets are successfully prepared via hydrothermal reaction. The smaller particle size in conjunction with higher exposure extent of electron‐dominated {010} crystal facet leads to a shorter electron transport pathway to the bulk surface, assuring a lower charge transfer resistance and thus minimal energy loss. In addition, it is proposed based on the results from conductive atomic force microscopy that higher W concentration plays a crucial role in facilitating the charge transport of the thin film. The “self‐doped” of W in Bi 2 WO 6 will lead to the higher carrier density and improved conductivity. Thus, the variation in the W concentration during a synthesis can be served as a promising strategy for future W based photoanode design to achieve high photoactivity in water splitting application.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1TA10203F
Abstract: This review comprehensively discusses the state-of-the-art of metal oxides/2D materials heterostructures as promising alternatives to harvest the renewable source of sunlight for improved photoelectrochemical water splitting performance.
Publisher: Springer Science and Business Media LLC
Date: 20-10-2022
DOI: 10.1038/S41467-022-33905-6
Abstract: Metal oxides are promising for photoelectrochemical (PEC) water splitting due to their robustness and low cost. However, poor charge carrier transport impedes their activity, particularly at low-bias voltage. Here we demonstrate the unusual effectiveness of phosphorus doping into bismuth vanadate (BiVO 4 ) photoanode for efficient low-bias PEC water splitting. The resulting BiVO 4 photoanode shows a separation efficiency of 80% and 99% at potentials as low as 0.6 and 1.0 V RHE , respectively. Theoretical simulation and experimental analysis collectively verify that the record performance originates from the unique phosphorus-doped BiVO 4 configuration with concurrently mediated carrier density, trap states, and small polaron hopping. With NiFeO x cocatalyst, the BiVO 4 photoanode achieves an applied bias photon-to-current efficiency of 2.21% at 0.6 V RHE . The mechanistic understanding of the enhancement of BiVO 4 properties provides key insights in trap state passivation and polaron hopping for most photoactive metal oxides.
Location: United States of America
Location: Germany
No related grants have been discovered for Fatwa Abdi.