Efficient Visible-Light-Induced Photocatalytic Disinfection on Sulfur-Doped Nanocrystalline Titania

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• 作者：Jimmy C. Yu ; Wingkei Ho ; Jiaguo Yu ; Hoyin Yip ; Po Keung Wong ; and Jincai Zhao
• 刊名：Environmental Science & Technology
• 出版年：2005
• 出版时间：February 15, 2005
• 年：2005
• 卷：39
• 期：4
• 页码：1175 - 1179
• 全文大小：530K
• 年卷期：v.39,no.4(February 15, 2005)
• ISSN：1520-5851

文摘

Sulfur-doped titanium dioxide exhibits a strong visible-light-induced antibacterial effect. The new photocatalystcan effectively kill Micrococcus lylae, a common Gram-positive bacterium. The relationship between sulfurconcentration and the bactericidal activity of S-dopedTiO₂ was investigated. Results from DMPO spin-trappingelectron spin resonance measurements confirm the formationof hydroxyl radicals, which is the origin of the considerablebactericidal activity under visible light irradiation.