ZnO-mediated photocatalytic degradation of Benzopurpurine BP4B in aqueous solution |
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| Authors: | Laouedj?Nadjia Email author" target="_blank">Elaziouti?AbdelkaderEmail author Bekka?Ahmed |
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| Institution: | 1.DR. Moulay Tahar University,Saida,Algeria;2.LCPCE Laboratory, Faculty of Sciences, Department of Industrial Chemistry,University of the Science and the Technology of Oran,Oran,Algeria |
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| Abstract: | The photocatalytic degradation of a commercial azo dye Benzopurpurine 4B (BP4B) in aqueous solution was investigated under
UV-A light at different operating conditions, including irradiation time, pH solution, initial dye concentration, amount of
catalyst, light intensity as well as band gap of other semiconductor groups by UV-spectrophotometric monitoring. The highest
decomposition efficiency was obtained at pH 8 as a result of 97.24 % degradation of BP4B for 80 min of irradiation time. Photodecomposition
reaction of BP4B dye was correlated with pseudo-first-order kinetic model. The degradation data of BP4B dye were satisfactory
described by Langmuir-Hinshelwood (L-H) mechanism. |
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