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Article: Stability of Pt nanoparticles and enhanced photocatalytic performance in mesoporous Pt-(anatase/TiO2(B)) nanoarchitecture
Title | Stability of Pt nanoparticles and enhanced photocatalytic performance in mesoporous Pt-(anatase/TiO2(B)) nanoarchitecture |
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Authors | |
Issue Date | 2009 |
Publisher | Royal 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? |
Abstract | A 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 Identifier | http://hdl.handle.net/10722/168404 |
ISSN | 2013 Impact Factor: 6.626 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bai, Y | en_US |
dc.contributor.author | Li, W | en_US |
dc.contributor.author | Liu, C | en_US |
dc.contributor.author | Yang, Z | en_US |
dc.contributor.author | Feng, X | en_US |
dc.contributor.author | Lu, X | en_US |
dc.contributor.author | Chan, KY | en_US |
dc.date.accessioned | 2012-10-08T03:18:32Z | - |
dc.date.available | 2012-10-08T03:18:32Z | - |
dc.date.issued | 2009 | en_US |
dc.identifier.citation | Journal Of Materials Chemistry, 2009, v. 19 n. 38, p. 7055-7061 | en_US |
dc.identifier.issn | 0959-9428 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/168404 | - |
dc.description.abstract | A 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.language | eng | en_US |
dc.publisher | Royal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.asp | en_US |
dc.relation.ispartof | Journal of Materials Chemistry | en_US |
dc.title | Stability of Pt nanoparticles and enhanced photocatalytic performance in mesoporous Pt-(anatase/TiO2(B)) nanoarchitecture | en_US |
dc.type | Article | en_US |
dc.identifier.email | Chan, KY:hrsccky@hku.hk | en_US |
dc.identifier.authority | Chan, KY=rp00662 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1039/b910240j | en_US |
dc.identifier.scopus | eid_2-s2.0-70349342816 | en_US |
dc.identifier.hkuros | 180137 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-70349342816&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 19 | en_US |
dc.identifier.issue | 38 | en_US |
dc.identifier.spage | 7055 | en_US |
dc.identifier.epage | 7061 | en_US |
dc.identifier.isi | WOS:000270116000016 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Bai, Y=26643355600 | en_US |
dc.identifier.scopusauthorid | Li, W=15073077300 | en_US |
dc.identifier.scopusauthorid | Liu, C=36063391100 | en_US |
dc.identifier.scopusauthorid | Yang, Z=7405433667 | en_US |
dc.identifier.scopusauthorid | Feng, X=34769676900 | en_US |
dc.identifier.scopusauthorid | Lu, X=7404839077 | en_US |
dc.identifier.scopusauthorid | Chan, KY=7406034142 | en_US |
dc.identifier.issnl | 0959-9428 | - |