DICP OpenIR
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
KeywordEpoxidation Nanoparticles Nanotubes Titania X-ray Absorption Spectroscopy
Source PublicationCHEMSUSCHEM
2011
DOI10.1002/cssc.201000324
Volume4Issue:7Pages:975-980
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordPHOTOCATALYTIC ACTIVITY ; TIO2 ; NANOPARTICLES ; CHEMISTRY ; DIAMETER ; OXIDE
AbstractSub-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.
Language英语
WOS IDWOS:000293594300015
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142475
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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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