摘要
In the process of heterogeneous photo catalytic degradation, the reaction rate depends strongly on the property of organic binding on the surface. It is important to identify the adsorption of organic compounds on TiO 2 surface to understand the mechanism of degradation and proper kinetics expression. The infrared spectroscopy was used to analyze the methyl orange adsorption on TiO 2 surface in aqueous solutions in different pH ranges. The variation of the surface complexation of methyl orange formed on the TiO 2 surface in different acid and basic media was discussed. And the adsorption amounts were also qualitatively analyzed. Methyl orange has strong, weak and little adsorption on the TiO 2 surface in acid, basic and near neutral solution, respectively.
In the process of heterogeneous photo catalytic degradation, the reaction rate depends strongly on the property of organic binding on the surface. It is important to identify the adsorption of organic compounds on TiO 2 surface to understand the mechanism of degradation and proper kinetics expression. The infrared spectroscopy was used to analyze the methyl orange adsorption on TiO 2 surface in aqueous solutions in different pH ranges. The variation of the surface complexation of methyl orange formed on the TiO 2 surface in different acid and basic media was discussed. And the adsorption amounts were also qualitatively analyzed. Methyl orange has strong, weak and little adsorption on the TiO 2 surface in acid, basic and near neutral solution, respectively.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2002年第6期1187-1190,共4页
Transactions of Nonferrous Metals Society of China
基金
Projects(0 10 873and 0 10 15 1)supportedbyGuangdongNaturalScienceFoundation
project(A3 0 40 3 0 1)supportedbyGuangdongScience&TechnologyDevelopmentFoundation
关键词
红外光谱学
吸附
氧化钛
甲基橙色
infrared spectroscopy
adsorption
methyl orange
TiO 2
