摘要
通过在真空条件下将氯铂酸的乙醇溶液引入到钛酸纳米管内,再经过热处理制备了镶嵌铂的纳米管钛酸(简写为PNTA).X射线光电子能谱(XPS)表明氯铂酸大部分转变成Pt0和PtO,顺磁共振谱(ESR)表明在PNTA中生成了束缚单电子的氧空位,在紫外-可见扩散漫散射谱(DRS)谱上表现出对可见光有吸收能力.丙烯的可见光光催化氧化实验结果表明:在可见光激发下(λ>420nm),PNTA对丙烯的光催化去除反应具有活性.
Pt-inserted nanotube titanic acid （abbr. PNTA） was prepared as follows： H2PtCl6 ethanol solution was filled into the titanic acid nanotubes and then annealed in air at 673 K for 3 h. X-ray photoelectron spectroscopy （XPS） showed that H2PtCl6 has been converted to Pt^0 and PtO. The result of electron spin resonance （ESR） revealed that there are single-electron-trapped oxygen vacancies to be formed in PNTA after heat treatment in air. Under visible light （ A 〉 420 nm）, propylene can be catalytically oxidized by PNTA in the presence of air.
出处
《感光科学与光化学》
EI
CSCD
2007年第1期12-17,共6页
Photographic Science and Photochemistry
基金
国家自然科学基金(20071010)
关键词
铂
纳米管钛酸
氧空位
可见光光催化
Pt-inserted nanotube titanic acid
visible light photocatalysis
propylene removal
