Efficient Noble‐Metal‐Free γ‐Fe2O3@NiO Core–Shell Nanostructured Photocatalysts for Water Oxidation |
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| Authors: | Xiaoqiang Du Jie Wei Jinli Zhao Ruixin Han Prof. Yong Ding |
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| Affiliation: | 1. State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000 (China);2. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029 (China) |
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| Abstract: | Flowerlike noble‐metal‐free γ‐Fe2O3@NiO core–shell hierarchical nanostructures have been fabricated and examined as a catalyst in the photocatalytic oxidation of water with [Ru(bpy)3](ClO4)2 as a photosensitizer and Na2S2O8 as a sacrificial electron acceptor. An apparent TOF of 0.29 μmols?1 m?2 and oxygen yield of 51 % were obtained with γ‐Fe2O3@NiO. The γ‐Fe2O3@NiO core–shell hierarchical nanostructures could be easily separated from the reaction solution whilst maintaining excellent water‐oxidation activity in the fourth and fifth runs. The surface conditions of γ‐Fe2O3@NiO also remained unchanged after the photocatalytic reaction, as confirmed by X‐ray photoelectron spectroscopy (XPS). |
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| Keywords: | magnetic properties nanostructures oxidation photocatalysis water |
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