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Enhanced Catalytic Activity of Sub-nanometer Titania Clusters Confined inside Double-Wall Carbon Nanotubes
Zhang, Hongbo1; Pan, Xiulian1; Liu, Jingyue (Jimmy)1,2; Qian, Weizhong3; Wei, Fei3; Huang, Yuying4; Bao, Xinhe1
关键词Epoxidation Nanoparticles Nanotubes Titania X-ray Absorption Spectroscopy
刊名CHEMSUSCHEM
2011
DOI10.1002/cssc.201000324
4期:7页:975-980
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]PHOTOCATALYTIC ACTIVITY ; TIO2 ; NANOPARTICLES ; CHEMISTRY ; DIAMETER ; OXIDE
英文摘要Sub-nanometer titania clusters have been homogeneously dispersed within double-wall carbon nantubes (DWNTs) with an inner diameter ranging from 1.0 to 1.5 nm. The confined titania exhibits a much higher activity than the titania particles attached on the outside walls of the DWNTs (the outside titania) in the epoxidation of propylene by H2O2. XPS, XANES and Raman spectroscopy data suggest electron transfer from titanium to the inner surfaces of the DWNTs. In contrast, no electron transfer has been observed for the outside titania. We also found that the extent of this confinement-induced electron transfer is temperature dependent. The enhanced activity of the confined titania clusters is likely attributed to their small sizes and the interaction with the DWNT surface. The synthesis method that we developed here can be readily applied to incorporation of other metal/metal oxide nanoparticles into carbon nanotubes.
语种英语
WOS记录号WOS:000293594300015
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142475
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Missouri, Dept Chem & Biochem, Dept Phys & Astron, Ctr Nanosci, St Louis, MO 63121 USA
3.Tsinghua Univ, Dept Chem Engn, Key Lab Green React Engn & Technol, Beijing 100084, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrontron Radiat Ctr, Shanghai 201204, Peoples R China
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GB/T 7714
Zhang, Hongbo,Pan, Xiulian,Liu, Jingyue ,et al. Enhanced Catalytic Activity of Sub-nanometer Titania Clusters Confined inside Double-Wall Carbon Nanotubes[J]. CHEMSUSCHEM,2011,4(7):975-980.
APA Zhang, Hongbo.,Pan, Xiulian.,Liu, Jingyue .,Qian, Weizhong.,Wei, Fei.,...&Bao, Xinhe.(2011).Enhanced Catalytic Activity of Sub-nanometer Titania Clusters Confined inside Double-Wall Carbon Nanotubes.CHEMSUSCHEM,4(7),975-980.
MLA Zhang, Hongbo,et al."Enhanced Catalytic Activity of Sub-nanometer Titania Clusters Confined inside Double-Wall Carbon Nanotubes".CHEMSUSCHEM 4.7(2011):975-980.
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