Transition-metal-doped Fe2O3 nanoparticles for oxygen evolution reaction |
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Authors: | Yichun Yin Xiwang Zhang and Chenghua Sun |
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Institution: | 1. ARC Centre of Excellence for Electromaterials Science, School of Chemistry, Monash University, Wellington Road, Clayton, VIC 3800, Australia;2. Department of Chemical Engineering, Monash University, Wellington Road, Clayton, VIC 3800, Australia;3. Faculty of Science, Engineering & Technology, Swinburne University of Technology, John St, Hawthorn, VIC 3122, Australia |
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Abstract: | Hematite (α-Fe2O3) has been extensively studied as a promising photocatalyst, with the capacity to split water under visible light. To tune its electronic structure and improve the performance for oxygen evolution reaction (OER), high-quality single crystals of α-Fe2O3 nanoparticles were synthesized and doped by various transition metals (M=V, Cr, Mn, Zn, Co, Ni, Cu, Nb, Mo, Ti) by a molten-salt flux method. Optical, electronic and catalytic properties of transition-metal-doped α-Fe2O3 (TM-doped α-Fe2O3) have been systematically investigated. Cobalt has been identified as the best dopant for α-Fe2O3, reducing the OER overpotential by 0.16?V with respect to the undoped. |
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Keywords: | Hematite Metal doping Water splitting Oxygen evolution reaction |
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