紫外诱导Ag/TiO2纳米异质结制备及光催化性能研究
UV-assisted Synthesis of Ag/TiO2 Heterojunction and Exploitation in Photocatalyst
水相体系中，利用Ti(SO4)2的水解反应获得表面清洁的分散性良好的锐钛矿型TiO2纳米晶。以TiO2纳米晶为基体，采用紫外光诱导还原法，获得了表面清洁的Ag/TiO2纳米异质结，TEM测试显示异质结形貌为20~30nm长的棒状TiO2与10 nm的Ag纳米球复合；而亚甲基蓝光降解实验表明异质结在可见光下的光催化活性高达纯TiO2的31倍。文中还讨论了紫外光诱导还原机理及异质结光催化性能高的原因。
In this paper, matchstick-like, surface-clean, well-dispersed anatase TiO2 nanocrystals were successfully prepared in a aqueous system. Based on these nanocrystals, Ag/TiO2 heterojunctions were synthesized via a UV-photoreduction aqueous route. TEM measurements illustrate the existence of heterojunction and degradation of methylene blue demonstrate the photocatalytic property of Ag/TiO2 heterojunctions is 31 times superior to the pure TiO2 nanocrystals under visible light irradition.
王智宇、付欣欣、王佳
化学晶体学物理学
水相体系g/TiO2纳米异质结光诱导光催化
aqueous systemAg/TiO2 heterojunctionUV-photo reductionphoto catalytic
王智宇,付欣欣,王佳.紫外诱导Ag/TiO2纳米异质结制备及光催化性能研究[EB/OL].(2012-05-16)[2025-08-04].http://www.paper.edu.cn/releasepaper/content/201205-260.点此复制
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