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

• Authors: Albena Bachvarova-Nedelcheva , Reni Iordanova , Angelina Stoyanova , Radka Gegova , Yanko Dimitriev , Alexandre Loukanov
• Languages of publication: EN

Abstracts

EN

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

EN

Precursor; Gel combustion method; TiO2/ZnO composites

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2013
• Volume: 11
• Issue: 3
• Pages: 364-370

Dates

published

1 - 3 - 2013

online

28 - 12 - 2012

Contributors

author

Albena Bachvarova-Nedelcheva

• Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

author

Reni Iordanova

• Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

author

Angelina Stoyanova

• Medical University, 5800, Pleven, Bulgaria

author

Radka Gegova

• Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

author

Yanko Dimitriev

• University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria

author

Alexandre Loukanov

• University of Mining and Geology “St. Ivan Rilski”, Sofia, 1700, Bulgaria

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Identifiers

DOI

10.2478/s11532-012-0167-2