硫掺杂纳米晶二氧化钛上高效的可见光诱导光催化消毒
Efficient visible-light-induced photocatalytic disinfection on sulfur-doped nanocrystalline titania.
作者信息
Yu Jimmy C, Ho Wingkei, Yu Jiaguo, Yip Hoyin, Wong Po Keung, Zhao Jincai
机构信息
Departments of Chemistry and Biology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
出版信息
Environ Sci Technol. 2005 Feb 15;39(4):1175-9. doi: 10.1021/es035374h.
Sulfur-doped titanium dioxide exhibits a strong visible-light-induced antibacterial effect. The new photocatalyst can effectively kill Micrococcus lylae, a common Gram-positive bacterium. The relationship between sulfur concentration and the bactericidal activity of S-doped TiO2 was investigated. Results from DMPO spin-trapping electron spin resonance measurements confirm the formation of hydroxyl radicals, which is the origin of the considerable bactericidal activity under visible light irradiation.
硫掺杂二氧化钛具有很强的可见光诱导抗菌效果。这种新型光催化剂能有效杀灭常见的革兰氏阳性菌——藤黄微球菌。研究了硫浓度与硫掺杂二氧化钛杀菌活性之间的关系。DMPO自旋捕获电子自旋共振测量结果证实了羟基自由基的形成，这是可见光照射下产生显著杀菌活性的根源。
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