期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 7, 页码 3748-3756出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta02873b
关键词
-
资金
- National Natural Science Foundation of China [21207090, 21477079, 21261140333, 21237003]
- Doctoral program of Higher Education [20123127120009]
- Shanghai Government [11SG42, 11ZR1426300, 14ZR1430900, IRT1269]
A black Ti3+-doped single-crystal TiO2 (Ti3+/TiO2) was one-pot synthesized by treating Ti metal in an ionic liquid containing LiAc and HAc under mild ionothermal conditions. The ionic liquid (1-methyl-imidazolium tetrafluoroborate) supplied an environment enriched with fluoride ions for dissolving titanium foil under ionothermal conditions, followed by reducing protons in acetic acid to form Ti3+ ions, leading to Ti3+-doped single-crystal TiO2 as a black powder. EPR and XPS results indicated the high concentrations of both Ti3+-dopants and oxygen vacancies. The Ti3+ incorporated into the TiO2 lattice could narrow the energy band gap of TiO2 via forming intermediate energy levels, leading to a visible photocatalyst. Meanwhile, the oxygen vacancies could inhibit the photoelectron-hole recombination. As expected, such a black Ti3+/TiO2 exhibited high activity in the photocatalytic degradation of organic pollutants and water splitting for H-2 production under irradiation with visible light and/or simulated solar light.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据