WO3-TiO2/MWCNT nanokompozitok előállítása és fotokatalitikus vizsgálata

Bárdos, Enikő and Kovács, Gábor and Gyulavári, Tamás and Németh, Krisztián and Kecsenovity, Egon and Berki, Péter and Baia, Lucian and Pap, Zsolt and Hernádi, Klára: WO3-TiO2/MWCNT nanokompozitok előállítása és fotokatalitikus vizsgálata. Proceedings of the International Symposium on Analytical and Environmental Problems, (22). pp. 341-344. (2016)

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Abstract

The “build-up” methodology, the importance of the order of the semiconductor layers in WO3-TiO2/MWCNT composite materials was studied in terms of the applied synthesis pathway, morpho-structural parameters (mean crystallite size, crystal phase composition, morphology) and photocatalytic efficiency (using oxalic acid as model pollutant). The appearance of TiWOx phase in the composites contributed to the enhancement of the photocatalytic efficiencies, as different synthesis methods led to different crystal phasecompositions. Although, it was proven that a beneficial phase’s presence can be hindered if an excess of MWCNT or WO3 was applied. As the ratio of the mentioned materials was reduced, active composites were obtained, but the previously noticed TiWOx disappeared. Therefore, in the case of WO3-TiO2/MWCNT nanocomposite system several photocatalytic activity enhancement factors can be introduced, but not simultaneously (the disappearance of TiWOx at low MWCNT and WO3 contents and the appearance of highly crystalline anatase).

Item Type: Article
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2016
Volume: 22
Page Range: pp. 341-344
ISBN: 978-963-306-507-5
Uncontrolled Keywords: Környezetkémia, Kompozit
Additional Information: Bibliogr.: 344. p. ; ill. ; összefoglalás angol nyelven
Date Deposited: 2018. Dec. 13. 09:29
Last Modified: 2018. Dec. 13. 09:29
URI: http://acta.bibl.u-szeged.hu/id/eprint/56114

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