WO3-TiO2/MWCNT nanokompozitok előállítása és fotokatalitikus vizsgálata

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 (...

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Bibliographic Details
Main Authors: Bárdos Enikő
Kovács Gábor
Gyulavári Tamás
Németh Krisztián
Kecsenovity Egon
Berki Péter
Baia Lucian
Pap Zsolt
Hernádi Klára
Corporate Author: International Symposium on Analytical and Environmental Problems (22.) (2016) (Szeged)
Format: Book part
Published: 2016
Series:Proceedings of the International Symposium on Analytical and Environmental Problems 22
Kulcsszavak:Környezetkémia, Kompozit
Online Access:http://acta.bibl.u-szeged.hu/56114
Description
Summary: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).
Physical Description:341-344
ISBN:978-963-306-507-5