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所属单位：[1]Univ Elect Sci & Technol China, State Key Lab Elect Thin Film & Integrated Device, Chengdu 610054, Sichuan, Peoples R China;[2]Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China

发表刊物：NANOSCALE ADVANCES

关键字：Calcination - Heterojunctions - Hydrogen production - Oxide minerals - Photocatalytic activity - Titanium dioxide

摘要：MXene Ti3C2/ TiO2 hybrids were successfully synthesized through a simple calcination of F- terminated Ti3C2. The resultant Ti3C2/ TiO2 composite photocatalysts retained a 2D multilayer structure like MXene Ti3C2, and TiO2 exhibited a truncated octahedral bipyramidal structure with exposed ( 001) facets under the participation of fluorine ions. The residual Ti3C2 could act as a co- catalyst to enhance the photocatalytic H2 production activity by capturing photogenerated electrons from TiO2 because of its electron reservoir feature and suitable Fermi level. The ( 101)-( 001) surface heterojunction of the truncated octahedral bipyramidal TiO2 further accelerated the separation of photogenerated carriers. As a result, the Ti3C2/ TiO2 hybrids with calcining F- terminated Ti3C2 exhibited photocatalytic hydrogen production that is twofold higher than that of Ti3C2/ TiO2 hybrids with calcining OH- terminated Ti3C2. This work presented a new strategy to prepare MXene Ti3C2/ TiO2 hybrids for photoconversion applications.

文献类型：Article

卷号：1

期号：5

页面范围：1812-1818

ISSN号：2516-0230

是否译文：否