Truncated octahedral bipyramidal TiO2/ MXene Ti3C2 hybrids with enhanced photocatalytic H2 production activity
点击次数：发表时间：2025-05-23
- 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
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- 性别：男
- 职称：教授
- 毕业院校：电子科技大学
- 学历：博士研究生毕业
- 学位：工学博士学位
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- 2012 当选： 新世纪优秀人才计划
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