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Open Chemistry

formerly Central European Journal of Chemistry


IMPACT FACTOR 2017: 1.425
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2391-5420
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Volume 11, Issue 3

Issues

Volume 13 (2015)

Photocatalytic properties of ZnO/TiO2 powders obtained via combustion gel method

Albena Bachvarova-Nedelcheva / Reni Iordanova / Angelina Stoyanova / Radka Gegova / Yanko Dimitriev / Alexandre Loukanov
Published Online: 2012-12-28 | DOI: https://doi.org/10.2478/s11532-012-0167-2

Abstract

Abstract The present study is a continuation of our previous investigations on the ZnO-TiO2 system. By applying different sol-gel methods we proved that the type of precursor and the order of adding the components influence the microstructure of the final product. This study focuses on the combustion sol-gel synthesis and photocatalytic properties of nanosized (∼7-20 nm) ZnO-TiO2 powders. The photocatalytic tests were performed toward two model organic dyes, Malachite Green and Reactive Black 5, in the UV and Vis region. For synthesis of ZnO/TiO2 powders, different precursors such as Zn(NO3)2·6H2O, Zn(CH3COO)2·2H2O, Ti(OC2H5)4 and Ti(OC4H9)4 were used. During the combustion process various phases (ZnO, TiO2 — anatase and rutile, ZnTiO3) were obtained. The structure and morphology of the resulting particles were characterized by XRD and SEM analysis. All samples exhibited a good photocatalytic activity in both UV and Vis regions. Graphical abstract

Keywords: Precursor; Gel combustion method; TiO2/ZnO composites

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About the article

Published Online: 2012-12-28

Published in Print: 2013-03-01


Citation Information: Open Chemistry, Volume 11, Issue 3, Pages 364–370, ISSN (Online) 2391-5420, DOI: https://doi.org/10.2478/s11532-012-0167-2.

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© 2012 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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