Oxygen Vacancy Enhanced Photocatalytic Activity of Pervoskite SrTiO 3
Changchun Institute of Optics, Fine Mechanics and Physics · Chinese Academy of Sciences · +3 more institutions
Abstract
A facile and general method has been developed to fabricate oxygen vacancies on perovskite SrTiO3 (STO) nanocrystals through a controllable solid-state reaction of NaBH4 and SrTiO3 nanocrystals. STO samples with tunable color, oxygen vacancy concentration on nanocrystal surface have been synthesized. TEM results reveal that these STO samples have a crystalline core/amorphous shell structure (SrTiO3@SrTiO3–x). XPS and EPR results disclose that the oxygen vacancy concentration increases with the increase of reaction time and temperature. The concentration of oxygen vacancies calculated from TGA data, could reach 5.07% (atom) in this study. UV–vis spectra and photocatalytic results indicate that oxygen vacancies…
Citation impact
- FWCI
- 10.17
- Percentile
- 100%
- References
- 41
Authors
9- HTHuaqiao TanCorresponding
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
- ZZZhao Zhao
University of Chinese Academy of Sciences, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
- WZWanbin Zhu
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences
- ENEric N. Coker
Sandia National Laboratories
- BLBinsong Li
Sandia National Laboratories
Topics & keywords
- Photocatalysis
- Materials science
- Oxygen
- X-ray photoelectron spectroscopy
- Amorphous solid
- Nanocrystal
- Vacancy defect
- Photochemistry