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dc.contributor.authorPraus, Petr
dc.contributor.authorMatys, Jakub
dc.contributor.authorKozák, Ondřej
dc.date.accessioned2013-01-22T08:33:29Z
dc.date.available2013-01-22T08:33:29Z
dc.date.issued2012
dc.identifier.citationJournal of the Brazilian Chemical Society. 2012, vol. 23, no. 10, p. 1900-1906.cs
dc.identifier.issn0103-5053
dc.identifier.issn1678-4790
dc.identifier.urihttp://hdl.handle.net/10084/96062
dc.description.abstractThe nanocomposite of ZnS nanoparticles stabilized by cetyltrimethylammonium ions (ZnS-CTA) and montmorillonite (ZnS-CTA-MMT) was prepared and used as a catalyst for the photodecomposition of phenol under UV irradiation of a medium pressure Hg lamp. The content of ZnS in ZnS-CTA-MMT was about 7 wt.%. For comparison, the photodecomposition was also performed with ZnS-CTA, montmorillonite and with no catalyst, i.e., using only UV irradiation. The photodecomposition efficiency decreased in the order: UV + ZnS-CTA-MMT ≈ UV + ZnS-CTA > UV > UV + MMT. The photodecomposition in the presence of ZnS-CTA-MMT and ZnS-CTA proceeded according to the pseudo-first order reaction kinetics. In other cases, the photodecomposition corresponded to the pseudo-second order reaction of phenol and hydroxyl radicals. Hydroxyl radicals were produced by reactions of dissolved oxygen and electrons released from the ZnS nanoparticles and excited phenol molecules. MMT decreased the photodecomposition reaction rate and no MMT catalytic activity was observed.cs
dc.format.extent452598 bytescs
dc.format.mimetypeapplication/pdfcs
dc.language.isoencs
dc.publisherSociedade Brasileira de Químicacs
dc.relation.ispartofseriesJournal of the Brazilian Chemical Societycs
dc.relation.urihttp://dx.doi.org/10.1590/S0103-50532012005000063cs
dc.rightsAll the content of the journal, except where otherwise noted, is licensed under a Creative Commons License
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/
dc.subjectZnS nanoparticlescs
dc.subjectmontmorillonitecs
dc.subjectnanocompositecs
dc.subjectphotocatalysiscs
dc.subjectphenolcs
dc.titlePhotocatalytic decomposition of phenol by nanocomposite of ZnS nanoparticles and montmorillonitecs
dc.typearticlecs
dc.identifier.locationNení ve fondu ÚKcs
dc.identifier.doi10.1590/S0103-50532012005000063
dc.rights.accessopenAccess
dc.type.versionpublishedVersion
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.identifier.wos000312199200020


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