Adjusting the ratio of bulk single-electron-trapped oxygen vacancies/surface oxygen vacancies in TiO2 for efficient photocatalytic hydrogen evolution

被引：80
作者：
Hou, Lili [1 ]
Guan, Zhongjie [1 ]
Zhang, Min [1 ]
He, Chunqing [2 ]
Li, Qiuye [1 ]
Yang, Jianjun [1 ]
机构：
[1] Henan Univ, Collaborat Innovat Ctr Nano Funct Mat & Applicat, Natl & Local Joint Engn Res Ctr Appl Technol Hybr, Kaifeng 475004, Peoples R China
[2] Wuhan Univ, Sch Phys & Technol, Key Lab Nucl Solid State Phys Hubei Prov, Wuhan 430072, Hubei, Peoples R China
来源：
CATALYSIS SCIENCE & TECHNOLOGY | 2018年 / 8卷 / 11期
基金：
中国国家自然科学基金;
关键词：
CHARGE SEPARATION; TITANIUM-DIOXIDE; FACILE SYNTHESIS; BLACK TIO2; SURFACE; DRIVEN; DEFECTS; NANOPARTICLES; ENHANCEMENT; REDUCTION;
D O I：
10.1039/c8cy00644j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of the concentration ratio of bulk single-electron-trapped oxygen vacancies/surface oxygen vacancies on the photocatalytic hydrogen production of TiO2 was investigated. A series of TiO2 materials with a tunable concentration ratio of bulk and surface oxygen vacancies were prepared through a NaBH4 solidstate reduction method. The results of HRTEM, XPS, ESR, PL and UV-vis DRS verify that surface oxygen vacancies can form on the surface of TiO2 and the concentrations of bulk single-electron-trapped oxygen vacancies and surface oxygen vacancies increase with the increase of the reduction degree. Combining the evaluation of photocatalytic hydrogen production with the analysis of positron annihilation lifetime spectra, it is proved that the concentration ratio of bulk single-electron-trapped oxygen vacancies/surface oxygen vacancies plays the key role in the photocatalytic hydrogen production of TiO2, and the optimal ratio of bulk single-electron-trapped oxygen vacancies/surface oxygen vacancies leads to the best photoactivity.
引用
收藏
页码：2809 / 2817
页数：9
相关论文
共 50 条
  • [31] Performance of amorphous CoSx/oxygen vacancies ZnO heterojunction photocatalytic hydrogen evolution
    Li, Yanru
    Xu, Jing
    Liu, Zeying
    Yu, Hai
    [J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2019, 30 (01) : 246 - 258
  • [32] Synergistic effect of surface oxygen vacancies and hydroxyl groups on Cu-doped TiO2 photocatalyst for hydrogen evolution
    Xing, Congcong
    Zhang, Zhaofu
    Zhang, Yu
    Han, Xu
    Yang, Linlin
    Li, Junshan
    Wang, Xiang
    Martinez, Paulina
    Demir, Muslum
    Piveteau, Laura
    Florian, Pierre
    Arbiol, Jordi
    Guo, Yuzheng
    Llorca, Jordi
    Cabot, Andreu
    [J]. MATERIALS TODAY NANO, 2023, 24
  • [33] Enhancing Photocatalytic Activity of NO Removal through an In Situ Control of Oxygen Vacancies in Growth of TiO2
    Shen, Xiaoling
    Dong, Guohui
    Wang, Lan
    Ye, Liqun
    Sun, Jianwu
    [J]. ADVANCED MATERIALS INTERFACES, 2019, 6 (19):
  • [34] Oxygen Vacancies Boost High-Energy {100} Faceted TiO2 for Efficient Photocatalytic Degradation of Rhodamine B
    Ma, Xiaojia
    Tang, Xuejing
    Yi, Hui
    Cai, Jinyuan
    Guo, Sheng-Qi
    [J]. CHEMISTRYSELECT, 2024, 9 (14):
  • [35] Highly Efficient Photocatalytic CO2 Methanation over Ru-Doped TiO2 with Tunable Oxygen Vacancies
    Li, Zheyue
    Wu, Di
    Gong, Wanbing
    Li, Jiayi
    Sang, Shuaikang
    Liu, Hengjie
    Long, Ran
    Xiong, Yujie
    [J]. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2022, 41 (12) : 2212043 - 2212050
  • [36] A facile synthesis of brown anatase TiO2 rich in oxygen vacancies and its visible light photocatalytic property
    Wang, Lihua
    Cai, Yandi
    Liu, Baochun
    Dong, Lin
    [J]. SOLID STATE IONICS, 2021, 361
  • [37] Oxygen Vacancy Defect Engineering of Heterophase Junction TiO2: Interfacial/Surface Oxygen Vacancies Coadjust the Photocatalytic ROS Production
    Kang, Xiaoshuang
    Dong, Guohui
    Dong, Tingting
    [J]. ACS APPLIED ENERGY MATERIALS, 2023, 6 (02) : 1025 - 1036
  • [38] Promoted Fixation of Molecular Nitrogen with Surface Oxygen Vacancies on Plasmon-Enhanced TiO2 Photoelectrodes
    Li, Chengcheng
    Wang, Tuo
    Zhao, Zhi-Jian
    Yang, Weimin
    Li, Jian-Feng
    Li, Ang
    Yang, Zhilin
    Ozin, Geoffrey A.
    Gong, Jinlong
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2018, 57 (19) : 5278 - 5282
  • [39] Understanding oxygen vacancies in disorder-engineered surface and subsurface of CaTiO3 nanosheets on photocatalytic hydrogen evolution
    Cai, Jinmeng
    Cao, Ang
    Huang, Jingjing
    Jin, Wenfeng
    Zhang, Jing
    Jiang, Zheng
    Li, Xingang
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2020, 267
  • [40] Localized interaction of single porphyrin molecules with oxygen vacancies on TiO2(110)
    Lackinger, Markus
    Janson, Martin S.
    Ho, W.
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2012, 137 (23)
12345