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题名: Local structure of titania decorated double-walled carbon nanotube characterized by scanning transmission X-ray microscopy
作者: Zhang, Hongbo1;  Wang, Jian2;  Pan, Xiulian1;  Hu, Yongfeng2;  Bao, Xinhe1
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 2012-05-07
DOI: 10.1063/1.4706515
卷: 136, 期:17
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: Scanning transmission X-ray microscopy was demonstrated to deliver detailed local structure and chemical composition of a complicated system with titania nanoparticles dispersed inside and outside the double-walled carbon nanotube (DWNT) channels. Areas with inhomogeneous distribution of titania and the associated water were particularly investigated at the C K-edge, Ti L-edge, and O K-edge. The results show that titania nanoparticles located inside DWNTs are present as amorphous, while those unsuccessfully introduced into the channels behave more like bulk materials in forms of anatase and rutile. Strong interaction was detected between the confined titania and DWNTs, as evidenced by up to 0.6 eV energy shift at the Ti L-edge. Strong hydration was observed for the as-prepared samples. Functionalization due to reduction and oxidation between titania and carbon layer is observed upon heat-treatment. This detailed structural information of specific areas cannot be provided by other techniques such as HRTEM, XRD, and XANES. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4706515]
关键词[WOS]: RESOLUTION ;  OXIDATION
语种: 英语
WOS记录号: WOS:000303935700057
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142949
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N 0X4, Canada

Recommended Citation:
Zhang, Hongbo,Wang, Jian,Pan, Xiulian,et al. Local structure of titania decorated double-walled carbon nanotube characterized by scanning transmission X-ray microscopy[J]. JOURNAL OF CHEMICAL PHYSICS,2012,136(17).
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