Najaf, Z. Nguyen, D.L.T. Chae, S.Y. Joo, Oh Shim Shah, A.U.H.A. Vo, D.-V.N. Nguyen, V.-H. Le, Q.V. Rahman, G. 2024-01-19T14:31:07Z 2024-01-19T14:31:07Z 2021-09-02 2021-07 0360-3199 https://pubs.kist.re.kr/handle/201004/116834 Solar-assisted water splitting using photoelectrochemical (PEC) cell is an environmentally benign technology for the generation of hydrogen fuel. However, several limitations of the materials used in fabrication of PEC cell have considerably hindered its efficiency. Extensive efforts have been made to enhance the efficiency and reduce the hydrogen generation cost using PEC cells. Photoelectrodes that are stable, efficient and made of cost-effective materials with simple synthesizing methods are essential for commercially viable solar water splitting through PEC technology. To this end, hematite (α-Fe2O3) has been explored as an excellent photoanode material to be used in the application of PEC water oxidation owing to its suitable bandgap of 2.1 eV that can utilize almost 40% of the visible light. In this study, we have summarized the recent progress of α-Fe2O3 nanostructured thin films for improving the water oxidation. Strategic modifications of α-Fe2O3 photoanodes comprising nanostructuring, heterojunctions, surface treatment, elemental doping, and nanocomposites are highlighted and discussed. Some prospects related to the challenges and research in this innovative research area are also provided as a guiding layout in building design principles for the improvement of α-Fe2O3 photoanodes in photoelectrochemical water oxidation to solve the increasing environmental issues and energy crises. ？ 2020 Hydrogen Energy Publications LLC English Elsevier Ltd Recent trends in development of hematite (α-Fe2O3) as an efficient photoanode for enhancement of photoelectrochemical hydrogen production by solar water splitting Article 10.1016/j.ijhydene.2020.07.111 1 International Journal of Hydrogen Energy, v.46, no.45, pp.23334 - 23357 International Journal of Hydrogen Energy 46 45 23334 23357 N scie scopus 000670292300005 2-s2.0-85089358174 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article Architectural design Cost effectiveness Energy policy Hematite Heterojunctions Photoelectrochemicals Solar water splitting Hydrogen production Hydrogen fuels Oxidation Photoelectrochemical cells Semiconductor doping Solar power generation Surface treatment Environmental issues Environmentally benign technologies Hydrogen generations Nanostructured thin film Photoelectrochemical hydrogen production Photoelectrochemical water oxidation Hematite Photoanode Photoelectrochemical hydrogen production Solar water splitting α-Fe2O3