Surface state studies of TiO₂ nanoparticles and photocatalytic degradation of methyl orange in aqueous TiO₂ dispersions

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• 作者：Ruan ; Shengping ; Wu ; Fengqing ; Zhang ; Tong ; Gao ; Wei ; Xu ; Baokun ; Zhao ; Muyu
• 关键词：Photocatalytic degradation ; XPS ; Methyl orange TiO₂
• 刊名：Materials Chemistry and Physics
• 出版年：2001
• 出版时间：March 1, 2001
• 年：2001
• 卷：69
• 期：1-3
• 页码：7-9
• 全文大小：176 K

文摘

Nanocrystalline TiO₂ is prepared using a stearic acid gel method. Their surface state is analyzed by means of X-ray photoelectron spectroscopy (XPS). The photocatalytic degradation of methyl orange in TiO₂ suspension is investigated. The relationships between surface state and photocatalytic activity are discussed.