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Article: Enhanced degradation of gaseous benzene under vacuum ultraviolet (VUV) irradiation over TiO2 modified by transition metals

TitleEnhanced degradation of gaseous benzene under vacuum ultraviolet (VUV) irradiation over TiO2 modified by transition metals
Authors
KeywordsCatalytic ozonation
Gaseous benzene
Ozone elimination
Photocatalytic degradation
Water vapor
Issue Date2015
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cej
Citation
Chemical Engineering Journal, 2015, v. 259, p. 534-541 How to Cite?
AbstractVacuum ultraviolet (VUV) lamps were used to enhance photocatalytic degradation of gaseous benzene. A series of transition metal modified TiO2 were developed to improve benzene removal efficiency and eliminate ozone byproduct. Among the prepared catalysts, Mn/TiO2 obtained the best catalytic activity toward benzene oxidation due to its superior capacity for ozone decomposition. The catalysts with better capacity for ozone decomposition have higher benzene removal efficiency. Photocatalytic oxidation efficiency of benzene under VUV irradiation reached 58%, which is over 20 times higher than that under 254nm UV irradiation. In addition, ozone can be completely eliminated by Mn/TiO2. Benzene degradation was greatly enhanced by ozone via catalytic ozonation. Water vapor played a dual role in benzene oxidation in the VUV-PCO process. Catalytic ozonation is mainly responsible for benzene abatement at low humidity while 185nm photooxidation is the dominant pathway at high humidity. © 2014 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/210748
ISSN
2020 Impact Factor: 13.273
2020 SCImago Journal Rankings: 2.528
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHuang, HB-
dc.contributor.authorHuang, HL-
dc.contributor.authorZhang, L-
dc.contributor.authorHu, P-
dc.contributor.authorYe, XG-
dc.contributor.authorLeung, DYC-
dc.date.accessioned2015-06-23T05:49:11Z-
dc.date.available2015-06-23T05:49:11Z-
dc.date.issued2015-
dc.identifier.citationChemical Engineering Journal, 2015, v. 259, p. 534-541-
dc.identifier.issn1385-8947-
dc.identifier.urihttp://hdl.handle.net/10722/210748-
dc.description.abstractVacuum ultraviolet (VUV) lamps were used to enhance photocatalytic degradation of gaseous benzene. A series of transition metal modified TiO2 were developed to improve benzene removal efficiency and eliminate ozone byproduct. Among the prepared catalysts, Mn/TiO2 obtained the best catalytic activity toward benzene oxidation due to its superior capacity for ozone decomposition. The catalysts with better capacity for ozone decomposition have higher benzene removal efficiency. Photocatalytic oxidation efficiency of benzene under VUV irradiation reached 58%, which is over 20 times higher than that under 254nm UV irradiation. In addition, ozone can be completely eliminated by Mn/TiO2. Benzene degradation was greatly enhanced by ozone via catalytic ozonation. Water vapor played a dual role in benzene oxidation in the VUV-PCO process. Catalytic ozonation is mainly responsible for benzene abatement at low humidity while 185nm photooxidation is the dominant pathway at high humidity. © 2014 Elsevier B.V.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cej-
dc.relation.ispartofChemical Engineering Journal-
dc.subjectCatalytic ozonation-
dc.subjectGaseous benzene-
dc.subjectOzone elimination-
dc.subjectPhotocatalytic degradation-
dc.subjectWater vapor-
dc.titleEnhanced degradation of gaseous benzene under vacuum ultraviolet (VUV) irradiation over TiO2 modified by transition metals-
dc.typeArticle-
dc.identifier.emailHuang, HB: harbor@hku.hk-
dc.identifier.emailLeung, DYC: ycleung@hku.hk-
dc.identifier.authorityLeung, DYC=rp00149-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1016/j.cej.2014.08.057-
dc.identifier.scopuseid_2-s2.0-84906871436-
dc.identifier.hkuros243874-
dc.identifier.volume259-
dc.identifier.spage534-
dc.identifier.epage541-
dc.identifier.isiWOS:000343952400055-
dc.publisher.placeNetherlands-
dc.identifier.issnl1385-8947-

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