Ultrathin Anatase TiO2 Nanosheets for High‐Performance Photocatalytic Hydrogen Production |
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| Authors: | Ming Li Ying Chen Wei Li Xiang Li He Tian Xiao Wei Zhaohui Ren Gaorong Han |
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| Affiliation: | 1. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Cyrus Tang Center for Sensor Materials and Application, Zhejiang University, Hangzhou, China;2. Center of Electron Microscope, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China |
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| Abstract: | An ethanol solvothermal route has been developed to prepare ultrathin anatase TiO2 nanosheets with dominant {001} facets (≈97%), a thickness of ≈2.5 nm, and a side length of ≈200 nm. The introduction of ethanol solvent significantly enhances the content of surface chemisorbed F? on the TiO2 nanosheet, which has a higher stability and further lowers the surface energy of {001} facets, giving rise to the large percentage of active {001} facets. Adopting well‐defined morphology, such nanosheets loaded with 1 wt% Pt exhibit an H2 evolution rate as high as 17.86 mmol h?1 g?1, and the corresponding apparent quantum efficiency has been determined to be 34.2%. |
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| Keywords: | photocatalytic hydrogen production TiO2 nanosheets ultrathin |
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