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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) January 25, 2017

Synthesis and Characterization of Zinc Oxide and Evaluation of its Catalytic Activities for Oxidative Degradation of Rhodamine B Dye in Aqueous Medium

  • Muhammad Saeed EMAIL logo , Mohsin Siddique , Muhammad Usman , Atta ul Haq , Samreen Gul Khan and Hafiz Abdur Raoof

Abstract

We herein report the synthesis of zinc oxide and evaluation of its catalytic performance for degradation of Rhodamine B dye in aqueous medium. Sodium hydroxide and zinc acetate dihydrate were used as precursor materials for synthesis of zinc oxide catalyst. X-ray difractometry, Fourier transform infer red spectroscopy, scanning electron microscopy, thermogravimetric and surface area analyses were used as characterization techniques. Catalytic performance of prepared zinc oxide was evaluated for degradation of Rhodamine B dye in aqueous medium. Catalytic degradation of dye was taking place according to Eley-Rideal mechanism which states that oxygen adsorbed at the surface of ZnO reacts with dye in fluid phase. During the reaction, reactive radicals are formed as a result of electron-hole pair formation between conduction and valence band of zinc oxide catalyst which degrade the dye into water and carbon dioxide.

Acknowledgments

Authors are thankful to TWAS, Trieste Italy for funding under COMSTECH-TWAS Grants Program.

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Received: 2016-10-23
Accepted: 2016-12-12
Published Online: 2017-1-25
Published in Print: 2017-9-26

©2017 Walter de Gruyter GmbH, Berlin/Boston

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