Photocatalytic reaction kinetics model based on electrical double layer theory - II. Surface complexation model of methyl orange adsorption on TiO2 surface
文献类型: 外文期刊
作者: Li, XJ 1 ; Li, FB 2 ; Gu, GB 2 ; Liu, S 2 ; Wang, LY 2 ; Liang, YY 2 ;
作者机构: 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Peoples R China; Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou 510650, Peoples R China; S China Univ Technol, Dept Appl Chem, Guangzhou 510640, Peoples R China
关键词: adsorption;methyl orange;TiO2;surface complexation;photocatalysis
期刊名称:TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA ( 影响因子:2.917; 五年影响因子:3.048 )
ISSN: 1003-6326
年卷期: 2003 年 13 卷 2 期
页码:
收录情况: SCI
摘要: Based on the infrared characterization of methyl orange adsorption on TiO2 surface and the titration of TiO2, the triple layer model of methyl orange adsorption on TiO2 was established according to electric double theory. The software FITEQL3. 1 was applied to calculate the distribution of organic adsorption on TiO2 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(-), SOH2 org(2) and SOHorg(-) are 5. 98, 17. 57 and - 4. 2, respectively.
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