One-step synthesis of nonstoichiometric TiO₂ with designed (101) facets for enhanced photocatalytic H₂ evolution

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• 作者：Wei-Kang Wang^a ; Miao Gao^a ; Xing Zhang^a ; Mamoru Fujitsuka^b ; Tetsuro Majima^b ; ^{majima@sanken.osaka-u.jp} ; Han-Qing Yu^a ; ^{hqyu@ustc.edu.cn}
• 关键词：Self-doping ; Facet etching ; Photocatalytic reduction ; Charge transfer dynamics
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：15 May 2017
• 年：2017
• 卷：205
• 期：Complete
• 页码：165-172
• 全文大小：2818 K
• 卷排序：205

文摘

Nonstoichiometric TiO2-x with desired (101) facets was synthesized by one-step solvothermal method. TiO2-x with desired (101) facets facilitated the separation of e−/h+ pairs and enhanced photocatalytic H2 evolution. The unambiguous effect of self-doping Ti3+ as the photogenerated electrons trapping and (101) facets is further elucidated. The TDR measurement confirmed that doping and facet-etching optimization facilitated the separation of electron-hole pairs.