Study of the adsorption of dicarboxylic acids on titanium dioxide in aqueous solution

被引:15
作者
Robert, D [1 ]
Weber, JV [1 ]
机构
[1] Lab Chim Ind, F-57500 St Avold, France
来源
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2000年 / 6卷 / 02期
关键词
titanium dioxide; dicarboxylic acid; Langmuir; IRFT-DRIFT;
D O I
10.1023/A:1008973619801
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The photodegradation processes using semi-conductor like TiO2 as a catalyst, provide new methods for waste water treatment. In this method the step of adsorption of organic compounds on the semi-conductor surface could have a prominent influence. In this work we describe the results of the study of the dicarboxylic acids adsorption on TiO2 (P25) in aqueous phase. The Langmuir model gives a good representation of the adsorption of the studied organic diacids. The maximum adsorption capacities are close to 7.10(-5) mol/g for the four studied diacids. The diffuse reflectance infrared spectroscopy (IRFT-DRIFT mode) of loaded TiO2 enables to demonstrate the formation of a dicarboxylate film on the semi-conductor surface.
引用
收藏
页码:175 / 178
页数:4
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