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Article: Single-crystalline and reactive facets exposed anatase TiO2 nanofibers with enhanced photocatalytic properties
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TitleSingle-crystalline and reactive facets exposed anatase TiO2 nanofibers with enhanced photocatalytic properties
 
AuthorsLi, W1 2
Bai, Y1 2
Liu, W1
Liu, C1
Yang, Z1
Feng, X1
Lu, X1
Chan, KY2
 
Issue Date2011
 
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.asp
 
CitationJournal Of Materials Chemistry, 2011, v. 21 n. 18, p. 6718-6724 [How to Cite?]
DOI: http://dx.doi.org/10.1039/c1jm10115c
 
AbstractSingle-crystalline anatase TiO2 nanofibers with highly reactive {001} facets were synthesized from layered potassium titanate K 2Ti 2O 5via topotactic transformation in ion-exchange and dehydration. The cuboid fibers showed one-dimensional (1-D) orientation in the [010] direction and {001} as well as {100} facets enclosing along the longitudinal dimension. The structural evolution was deduced from XRD, SEM and TEM characterizations, which revealed that the highly reactive {001} facets were derived from the interlayer splitting and exfoliation of the layered precursors in a surfactant-free way. Photoluminescence (PL) measurements witnessed the efficient separation and transfer of photoinduced charge carriers in the single-crystalline and reactive facets enclosed TiO2 nanofibers. Sequently, highly efficient photocatalytic property of the nanofibers was demonstrated by phenol degradation and H 2 evolution. Phenol degradation rate of nanofibers is 2.7 times of the irregular-shaped nanoparticle counterparts with the same crystal phase and similar specific surface area. In photocatalytic evolution of H 2, nanofibers presented much higher and more stable activity than both nanoparticle counterparts and P25 benchmark. Charge carrier highways provided by single-crystalline 1-D structures and efficient surface reactivity offered by exposed facets are the two key factors for the enhanced properties. © 2011 The Royal Society of Chemistry.
 
ISSN0959-9428
2013 Impact Factor: 6.626
 
DOIhttp://dx.doi.org/10.1039/c1jm10115c
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLi, W
 
dc.contributor.authorBai, Y
 
dc.contributor.authorLiu, W
 
dc.contributor.authorLiu, C
 
dc.contributor.authorYang, Z
 
dc.contributor.authorFeng, X
 
dc.contributor.authorLu, X
 
dc.contributor.authorChan, KY
 
dc.date.accessioned2012-10-08T03:20:01Z
 
dc.date.available2012-10-08T03:20:01Z
 
dc.date.issued2011
 
dc.description.abstractSingle-crystalline anatase TiO2 nanofibers with highly reactive {001} facets were synthesized from layered potassium titanate K 2Ti 2O 5via topotactic transformation in ion-exchange and dehydration. The cuboid fibers showed one-dimensional (1-D) orientation in the [010] direction and {001} as well as {100} facets enclosing along the longitudinal dimension. The structural evolution was deduced from XRD, SEM and TEM characterizations, which revealed that the highly reactive {001} facets were derived from the interlayer splitting and exfoliation of the layered precursors in a surfactant-free way. Photoluminescence (PL) measurements witnessed the efficient separation and transfer of photoinduced charge carriers in the single-crystalline and reactive facets enclosed TiO2 nanofibers. Sequently, highly efficient photocatalytic property of the nanofibers was demonstrated by phenol degradation and H 2 evolution. Phenol degradation rate of nanofibers is 2.7 times of the irregular-shaped nanoparticle counterparts with the same crystal phase and similar specific surface area. In photocatalytic evolution of H 2, nanofibers presented much higher and more stable activity than both nanoparticle counterparts and P25 benchmark. Charge carrier highways provided by single-crystalline 1-D structures and efficient surface reactivity offered by exposed facets are the two key factors for the enhanced properties. © 2011 The Royal Society of Chemistry.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationJournal Of Materials Chemistry, 2011, v. 21 n. 18, p. 6718-6724 [How to Cite?]
DOI: http://dx.doi.org/10.1039/c1jm10115c
 
dc.identifier.doihttp://dx.doi.org/10.1039/c1jm10115c
 
dc.identifier.epage6724
 
dc.identifier.issn0959-9428
2013 Impact Factor: 6.626
 
dc.identifier.issue18
 
dc.identifier.scopuseid_2-s2.0-79955071813
 
dc.identifier.spage6718
 
dc.identifier.urihttp://hdl.handle.net/10722/168524
 
dc.identifier.volume21
 
dc.languageeng
 
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.asp
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofJournal of Materials Chemistry
 
dc.relation.referencesReferences in Scopus
 
dc.titleSingle-crystalline and reactive facets exposed anatase TiO2 nanofibers with enhanced photocatalytic properties
 
dc.typeArticle
 
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<contributor.author>Liu, C</contributor.author>
<contributor.author>Yang, Z</contributor.author>
<contributor.author>Feng, X</contributor.author>
<contributor.author>Lu, X</contributor.author>
<contributor.author>Chan, KY</contributor.author>
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Author Affiliations
  1. Nanjing University of Technology
  2. The University of Hong Kong