Wet-chemistry hydrogen doped TiO2 with switchable defects control for photocatalytic hydrogen evolution

被引：117

作者：

Jia, Guangri ^{[1
,2
]}

Wang, Ying ^{[1
,2
]}

Cui, Xiaoqiang ^{[1
,2
]}

Zhang, Hengzhong ^{[3
]}

Zhao, Jingxiang ^{[4
]}

Li, Lu Hua ^{[5
]}

Gu, Lin ^{[6
]}

Zhang, Qinghua ^{[6
]}

Zheng, Lirong ^{[7
]}

Wu, Jiandong ^{[1
,2
]}

Wu, Qiong ^{[1
,2
]}

Singh, David J. ^{[8
,9
]}

Li, Weiwei ^{[3
]}

Zhang, Lei ^{[1
,2
,10
]}

Zheng, Weitao ^{[1
,2
]}

机构：

[1] Jilin Univ, Sch Mat Sci & Engn, State Key Lab Automot Simulat & Control, 2699 Qianjin St, Changchun 130012, Peoples R China

[2] Jilin Univ, Key Lab Automobile Mat MOE, 2699 Qianjin St, Changchun 130012, Peoples R China

[3] Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China

[4] Harbin Normal Univ, Coll Chem & Chem Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

[5] Deakin Univ, Inst Frontier Mat, Geelong Waurn Ponds Campus, Waurn Ponds, Vic 3216, Australia

[6] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[7] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

[8] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA

[9] Univ Missouri, Dept Chem, Columbia, MO 65211 USA

[10] Jilin Univ, Coll Chem, 2699 Qianjin St, Changchun 130012, Peoples R China

来源：

MATTER | 2022年 / 5卷 / 01期

基金：

中国国家自然科学基金;

关键词：

SURFACE-DEFECTS; BLACK TIO2; RUTILE; NANOMATERIALS; ABSORPTION; ANATASE; CARBON;

D O I：

10.1016/j.matt.2021.10.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrogen has a remarkably flexible chemistry in oxides. We show that the introduction of H into simple TiO2 leads to greatly enhanced photocatalytic properties, and specifically yields a 60 times enhancement of photocatalytic hydrogen evolution activity over commercial rutile. The hydrogenated TiO2 (H-TiO2) is synthesized by a new one-step wet-chemistry approach yielding switchable defect via controlled annealing. As-prepared H-TiO2 has Ti-H bonds in the lattice from replacement of oxygen by hydrogen atoms. The Ti-H bonds are converted to oxygen vacancies by loss of H2O with Ar annealing. Oppositely, Ti-H defects are healed by Ti-O with O-2 annealing. The strongly enhanced photocatalytic activity is associated with increased visible light absorption and effective separation of photogenerated carriers. This work provides a new and powerful approach for the preparation of hydrogenated titanium dioxide with switchable defect control, and striking improvement of photocatalytic activity.

引用

页码：206 / 218

页数：14

共 51 条

[11] Highly Carbon-Doped TiO2 Derived from MXene Boosting the Photocatalytic Hydrogen Evolution [J].