摘要
Based on the infrared characterization of methyl orange adsorption on TiO 2 surface and the titration of TiO 2, the triple layer model of methyl orange adsorption on TiO 2 was established according to electric double theory. The software FITEQL3.1 was applied to calculate the distribution of organic adsorption on TiO 2 surface by introducing dummy components to help to overcome mathematical difficulties. It is shown that the chem. adsorption species of methyl orange have a great adsorption amount. The adsorption constants of three kinds of surface complexation expressed as SOH +org -,SOH 2org 2 and SOHorg - are 5.98, 17.57 and -4.2, respectively.
Based on the infrared characterization of methyl orange adsorption on TiO 2 surface and the titration of TiO 2, the triple layer model of methyl orange adsorption on TiO 2 was established according to electric double theory. The software FITEQL3.1 was applied to calculate the distribution of organic adsorption on TiO 2 surface by introducing dummy components to help to overcome mathematical difficulties. It is shown that the chem. adsorption species of methyl orange have a great adsorption amount. The adsorption constants of three kinds of surface complexation expressed as SOH +org -,SOH 2org 2 and SOHorg - are 5.98, 17.57 and -4.2, respectively.
出处
《中国有色金属学会会刊：英文版》
CSCD
2003年第2期448-451,共4页
Transactions of Nonferrous Metals Society of China
基金
Project( 0 10 873and 0 10 15 1)supportedbytheNaturalScienceFoundationofGuandongProvince
China
Project(A3 0 40 3 0 1)supportedbytheScience&TechnologyDevelopmentFoundationofGuangdongProvince
China
关键词
甲基橙
吸附
二氧化钛
光催化
络合物
滴定分析
adsorption
methyl orange
TiO 2
surface complexation
photocatalysis
