Elucidating the facet-dependent hydrogenation mechanism of black-TiO2 through in situ characterization

Bingyan Liu; Tianfeng Duan; Songhao Guo; Kejun Bu; Yiming Wang; Jiabing Luo; Mei Li; Hongliang Dong; Jun Zhang; Xujie Lü

doi:10.1039/D5CC05125H

Elucidating the facet-dependent hydrogenation mechanism of black-TiO₂ through in situ characterization

Bingyan Liu,^ab Tianfeng Duan,^b Songhao Guo,^bc Kejun Bu,

^b Yiming Wang,^b Jiabing Luo,^a Mei Li,^b Hongliang Dong,^b Jun Zhang

*^a and Xujie Lü

*^b

Author affiliations

* Corresponding authors

^a School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, China
E-mail: zhangj@upc.edu.cn

^b Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, China
E-mail: xujie.lu@hpstar.ac.cn

^c Center of Micro-Nano System, School of Information Science and Technology, Fudan University, Shanghai 200433, China

Abstract

In situ monitoring reveals facet-dependent hydrogenation kinetics of TiO₂ nanocrystals by a diamond anvil cell: (100) > (101) > (001). The differences of the hydrogenation rate stem from anisotropic diffusion of oxygen vacancies (V_O). V_O introduction enhances electron transport and photoconductivity, demonstrating that surface termination governs the reaction dynamics.

Chemical Communications

Elucidating the facet-dependent hydrogenation mechanism of black-TiO₂ through in situ characterization

Abstract

Supplementary files

Article information

Download Citation

Permissions

Elucidating the facet-dependent hydrogenation mechanism of black-TiO₂ through in situ characterization

Social activity

Search articles by author

Spotlight

Advertisements