The Photocatalytic Oxidation of 4-Chlorophenol Using Bi2WO6 under Solar Light Irradiation | Zendy

Lorean Madriz | Zendy; José Tatá | Zendy; Ronald Vargas | Zendy

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The Photocatalytic Oxidation of 4-Chlorophenol Using Bi₂WO₆ under Solar Light Irradiation

Author(s) -

Lorean Madriz,

José Tatá,

Ronald Vargas

Publication year - 2014

Publication title -

international journal of photochemistry

Language(s) - English

Resource type - Journals

eISSN - 2356-7090

pISSN - 2314-7148

DOI - 10.1155/2014/387536

Subject(s) - photocatalysis , mineralization (soil science) , adsorption , catalysis , chemistry , irradiation , photochemistry , benzoquinone , reaction rate constant , langmuir , kinetics , maleic acid , inorganic chemistry , nuclear chemistry , organic chemistry , nitrogen , physics , quantum mechanics , nuclear physics , polymer , copolymer

This report discusses the effects of the initial concentration of 4-chlorophenol (4-CP) on its solar light photoinduced oxidation/mineralization kinetics on Bi2WO6 catalyst. Photocatalytic degradation followed the Langmuir-Hinshelwood (L-H) mechanism. From the kinetic data the Langmuir adsorption equilibrium constant of 4-CP on the Bi2WO6 surface and the L-H maximum reaction rate for 4-CP oxidation have been evaluated. Chromatographic and spectroscopy studies show the presence of p-benzoquinone and maleic acid as the main reaction products; these compounds first increase and then decay until they disappear. Chemical oxygen demand (COD) and produced CO2 measurement show that photocatalytic mineralization of the phenolic compound was readily possible in a wide concentration range.

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