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Study of the Adsorption of Dicarboxylic Acids on Titanium Dioxide in Aqueous Solution

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Abstract

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.

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Authors and Affiliations

  1. Laboratoire de Chimie Industrielle, Rue Victor Demange, 57500, Saint Avold, France

    Didier Robert & Jean Victor Weber

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  1. Didier Robert
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  2. Jean Victor Weber
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Robert, D., Weber, J.V. Study of the Adsorption of Dicarboxylic Acids on Titanium Dioxide in Aqueous Solution. Adsorption 6, 175–178 (2000). https://doi.org/10.1023/A:1008973619801

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  • DOI: https://doi.org/10.1023/A:1008973619801

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