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Hierarchically Ordered Macro-Mesoporous TiO2-Graphene Composite Films: Improved Mass Transfer, Reduced Charge Recombination, and Their Enhanced Photocatalytic Activities
Du, Jiang1; Lai, Xiaoyong1; Yang, Nailiang1; Zhai, Jin2; Kisailus, David3; Su, Fabing1; Wang, Dan1; Jiang, Lei2; Wang, D
2011
Source PublicationACS NANO
ISSN1936-0851
Volume5Issue:1Pages:590-596
AbstractHierarchically ordered macro-mesoporous titania films have been produced through a confinement self assembly method within the regular voids of a colloidal crystal with three-dimensional periodicity. Furthermore, graphene as in excellent electron-accepting and electron transporting material has been incorporated into the hierarchically ordered macro-mesoporous titania frameworks by in situ reduction of graphene oxide added in the self assembly system. Incorporation of interconnected macropores in mesoporous films improves the mass transport through the film reduces the length of the mesopore channel, and increases the accessible surface area of the thin film, whereas the introduction of graphene effectively suppresses the charge recombination. Therefore; the significant enhancement of photocatalytic activity for degrading the methyl blue has been achieved. The apparent rate constants for macro-mesoporous titania films without and with graphene are up to 0.045 and 0.071 min(-1), respectively, almost 11 and 17 times higher than that for Pure mesoporous titania films (0.0041 min(-1)).
KeywordHierarchical Ordered Macro-mesoporous Tio2-graphene Film Photocatalysis Mass Transport Efficient Charge Separation
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/nn102767d
Indexed BySCI
Language英语
WOS KeywordTITANIA THIN-FILMS ; VISIBLE-LIGHT PHOTOCATALYST ; TIO2 ; BATTERY ; OXIDES ; PORES
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000286487300076
Citation statistics
Cited Times:553[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5377
Collection多相复杂系统国家重点实验室
Corresponding AuthorWang, D
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Beijing Univ Aeronaut & Astronaut, Beijing 100191, Peoples R China
3.Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA
Recommended Citation
GB/T 7714
Du, Jiang,Lai, Xiaoyong,Yang, Nailiang,et al. Hierarchically Ordered Macro-Mesoporous TiO2-Graphene Composite Films: Improved Mass Transfer, Reduced Charge Recombination, and Their Enhanced Photocatalytic Activities[J]. ACS NANO,2011,5(1):590-596.
APA Du, Jiang.,Lai, Xiaoyong.,Yang, Nailiang.,Zhai, Jin.,Kisailus, David.,...&Wang, D.(2011).Hierarchically Ordered Macro-Mesoporous TiO2-Graphene Composite Films: Improved Mass Transfer, Reduced Charge Recombination, and Their Enhanced Photocatalytic Activities.ACS NANO,5(1),590-596.
MLA Du, Jiang,et al."Hierarchically Ordered Macro-Mesoporous TiO2-Graphene Composite Films: Improved Mass Transfer, Reduced Charge Recombination, and Their Enhanced Photocatalytic Activities".ACS NANO 5.1(2011):590-596.
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