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Photocatalytic study of organosilane-modified zinc oxide nanoparticles Cover

Photocatalytic study of organosilane-modified zinc oxide nanoparticles

Open Access
|Dec 2015

Abstract

In our recent studies, we have investigated the tunability of optical properties of zinc oxide nanoparticles (ZnO NPs) through surface modification with organosilane surfactants. In the present paper, the effect of ZnO NPs modified with variable amount of 3-(trimethoxysilyl)propylmethacrylate (MPS) surfactant was investigated toward the photocatalytic degradation of methylene blue (MB), using two different UV light sources emitting at 254 nm and 365 nm. While the maximum photodegradation efficiency of 63% was reached by ZnO NPs loaded with the highest concentration of MPS upon exposure at 254 nm, in the case of UV exposure at 365 nm an opposite photodegradation trend was observed. Actually, a significant photodegradation efficiency of 95% was recorded by the unmodified ZnO, followed by ZnO NPs modified with 2% MPS for which the photodegradation efficiency amounted to 80%, thus highlighting their best photocatalytic performance.

DOI: https://doi.org/10.1515/auoc-2015-0012 | Journal eISSN: 2286-038X | Journal ISSN: 1583-2430
Language: English
Page range: 61 - 66
Submitted on: Sep 17, 2015
Accepted on: Sep 21, 2015
Published on: Dec 30, 2015
Published by: Ovidius University of Constanta
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year
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© 2015 Aurel Tăbăcaru, Mariana Buşilă, Viorica (Ghisman) Pleşcan, Viorica Muşat, published by Ovidius University of Constanta
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.