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Article: Stability of Pt nanoparticles and enhanced photocatalytic performance in mesoporous Pt-(anatase/TiO2(B)) nanoarchitecture

TitleStability of Pt nanoparticles and enhanced photocatalytic performance in mesoporous Pt-(anatase/TiO2(B)) nanoarchitecture
Authors
Issue Date2009
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.asp
Citation
Journal Of Materials Chemistry, 2009, v. 19 n. 38, p. 7055-7061 How to Cite?
AbstractA novel metal-semiconductor nanocomposite with stable metal nanoparticles and efficient photocatalytic performance has been prepared. It consists of highly dispersed ∼2 nm platinum (Pt) nanoparticles loaded on mesoporous and bicrystalline TiO2 fibers (Pt/mb-TiO2). Due to the well organized porous Pt/TiO2 nanoarchitecture, rate of photodegradation of CHCl3 was nearly doubled compared to both P25 and Pt/P25. And in photocatalytic production of H2 (with methanol as an electron donor), Pt/mb-TiO2 presented much more stable activity than Pt/P25. In a 20 h H2 production, Pt nanoparticles on P25 agglomerated and grew remarkably from 2.0 ± 0.5 nm to 4.5 ± 2.5 nm, while Pt nanoparticles on mb-TiO2 changed slightly from 2.0 ± 0.5 nm to 2.2 ± 0.5 nm. Moreover, the loss ratio of Pt on P25 is 36%, which is much larger than that of 7% on mb-TiO2. The efficient charge transfer in the interfaces of Pt/TiO2(B) and TiO2(B)/anatase was discussed. We concluded that the high photocatalytic performance of Pt/mb-TiO2 can be attributed to stable Pt nanoparticles supported on the mesoporous masonry frameworks of TiO2 and efficient charge transfer in the interfaces. © 2009 The Royal Society of Chemistry.
Persistent Identifierhttp://hdl.handle.net/10722/168404
ISSN
2013 Impact Factor: 6.626
2015 SCImago Journal Rankings: 2.540
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBai, Yen_US
dc.contributor.authorLi, Wen_US
dc.contributor.authorLiu, Cen_US
dc.contributor.authorYang, Zen_US
dc.contributor.authorFeng, Xen_US
dc.contributor.authorLu, Xen_US
dc.contributor.authorChan, KYen_US
dc.date.accessioned2012-10-08T03:18:32Z-
dc.date.available2012-10-08T03:18:32Z-
dc.date.issued2009en_US
dc.identifier.citationJournal Of Materials Chemistry, 2009, v. 19 n. 38, p. 7055-7061en_US
dc.identifier.issn0959-9428en_US
dc.identifier.urihttp://hdl.handle.net/10722/168404-
dc.description.abstractA novel metal-semiconductor nanocomposite with stable metal nanoparticles and efficient photocatalytic performance has been prepared. It consists of highly dispersed ∼2 nm platinum (Pt) nanoparticles loaded on mesoporous and bicrystalline TiO2 fibers (Pt/mb-TiO2). Due to the well organized porous Pt/TiO2 nanoarchitecture, rate of photodegradation of CHCl3 was nearly doubled compared to both P25 and Pt/P25. And in photocatalytic production of H2 (with methanol as an electron donor), Pt/mb-TiO2 presented much more stable activity than Pt/P25. In a 20 h H2 production, Pt nanoparticles on P25 agglomerated and grew remarkably from 2.0 ± 0.5 nm to 4.5 ± 2.5 nm, while Pt nanoparticles on mb-TiO2 changed slightly from 2.0 ± 0.5 nm to 2.2 ± 0.5 nm. Moreover, the loss ratio of Pt on P25 is 36%, which is much larger than that of 7% on mb-TiO2. The efficient charge transfer in the interfaces of Pt/TiO2(B) and TiO2(B)/anatase was discussed. We concluded that the high photocatalytic performance of Pt/mb-TiO2 can be attributed to stable Pt nanoparticles supported on the mesoporous masonry frameworks of TiO2 and efficient charge transfer in the interfaces. © 2009 The Royal Society of Chemistry.en_US
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.aspen_US
dc.relation.ispartofJournal of Materials Chemistryen_US
dc.titleStability of Pt nanoparticles and enhanced photocatalytic performance in mesoporous Pt-(anatase/TiO2(B)) nanoarchitectureen_US
dc.typeArticleen_US
dc.identifier.emailChan, KY:hrsccky@hku.hken_US
dc.identifier.authorityChan, KY=rp00662en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1039/b910240jen_US
dc.identifier.scopuseid_2-s2.0-70349342816en_US
dc.identifier.hkuros180137-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349342816&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume19en_US
dc.identifier.issue38en_US
dc.identifier.spage7055en_US
dc.identifier.epage7061en_US
dc.identifier.isiWOS:000270116000016-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBai, Y=26643355600en_US
dc.identifier.scopusauthoridLi, W=15073077300en_US
dc.identifier.scopusauthoridLiu, C=36063391100en_US
dc.identifier.scopusauthoridYang, Z=7405433667en_US
dc.identifier.scopusauthoridFeng, X=34769676900en_US
dc.identifier.scopusauthoridLu, X=7404839077en_US
dc.identifier.scopusauthoridChan, KY=7406034142en_US

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