Interface-confined intermediate phase in TiO2 enables efficient photocatalysis

• 成果类型: Article
• 署名作者: Huang, Qiu-Shi; Zhang, Yang; Liu, Peng Fei; Yang, Hua Gui; Zhang, Xie; Wei, Su-Huai
• 署名单位: Chinese Academy of Engineering Physics; Beijing Computational Science Research Center (CSRC); East China University of Science & Technology; Northwestern Polytechnical University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12629
• DOI: 10.1073/pnas.2318341121
• 发表日期: 2024-02-06
• 关键词: band alignment; anatase; rutile; degradation; complexions

摘要

As a prototypical photocatalyst, TiO2 has been extensively studied. An interesting yet enhances the overpotential of the hydrogen evolution reaction. Also, the corresponding band alignment at the interface leads to efficient separation of electrons and holes. The interfacial confinement additionally creates a wide distribution of the band gap in the vicinity of the interface, which in turn improves optical absorption. These factors all contribute to the enhanced photocatalytic efficiency in P25. Our insights provide a rationale to the puzzling superior photocatalytic performance of P25 and enable a strategy to achieve highly efficient photocatalysis via interface engineering.