摘要
在500℃下用还原性气体H2O/H2对WO3进行不同时间的处理,得到一系列具有不同氧空位的催化剂。采用XRD、XPS、DRS等技术对催化剂进行了表征,并考察了它们的光催化析氧活性。实验结果表明:适量的氧空位能明显提高催化剂的光催化析氧活性。
A series of catalysts with different oxygen vacancies were obtained from WO3 treated for different time under H2O/H2 reducing atmosphere at 500 ℃. The catalysts were characterized by XRD, XPS, DRS measurements. The photocatalytic activity of WO3 with different oxygen vacancies for O2 evolution was studied. The results indicate that appropriate oxygen vacancies could improve the photocatalytic activity obviously.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2005年第10期1510-1514,共5页
Chinese Journal of Inorganic Chemistry
基金
国家"863"资助项目(No.2002AA327140)
关键词
WO3
氧空位
光催化析氧活性
WO3
oxygen vacancy
photocatalytic activity for O2 evolution
