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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
发表期刊ACS NANO
ISSN1936-0851
卷号5期号:1页码:590-596
摘要Hierarchically 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)).
关键词Hierarchical Ordered Macro-mesoporous Tio2-graphene Film Photocatalysis Mass Transport Efficient Charge Separation
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/nn102767d
收录类别SCI
语种英语
关键词[WOS]TITANIA THIN-FILMS ; VISIBLE-LIGHT PHOTOCATALYST ; TIO2 ; BATTERY ; OXIDES ; PORES
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号WOS:000286487300076
引用统计
被引频次:485[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ipe.ac.cn/handle/122111/5377
专题多相复杂系统国家重点实验室
通讯作者Wang, D
作者单位1.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
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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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