ICCAS OpenIR
Preparation of porous chromium oxide nanotubes using carbon nanotubes as templates and their application as an ethanol sensor
An, Guimin1; Zhang, Yang2; Liu, Zhimin1; Miao, Zhenjiang1; Han, Buxing1; Miao, Shiding1; Li, Jianping2
2008-01-23
Source PublicationNANOTECHNOLOGY
ISSN0957-4484
Volume19Issue:3
AbstractChromium oxide nanotubes were successfully prepared using multi-walled carbon nanotubes (MWCNTs) as a template via a supercritical fluid-mediated route. In this method, with chromium (III) nitrate nonahydrate as precursor, chromium oxide was first deposited on MWCNTs in supercritical ethanol in the presence of NH(4)HCO(3). The as-prepared chromium oxide/MWCNT nanocomposites were characterized by transmission electron microscopy, x-ray diffraction, infrared spectroscopy and thermogravimetric analysis. It was demonstrated that the MWCNTs were coated with a layer of amorphous Cr(2)O(3)center dot xH(2)O. The thickness of the Cr(2)O(3)center dot xH(2)O sheath on MWCNTs could be tuned by manipulating the ratio of precursor to MWCNTs. Calcining the composites at 550 degrees C, the MWCNTs were removed, producing polycrystalline alpha-Cr(2)O(3) nanotubes. The as-prepared alpha-Cr(2)O(3) sample was used as a sensor material to detect ethanol vapor, and it was demonstrated that the alpha-Cr(2)O(3) nanotubes exhibited good performance even at 400 degrees C.
DOI10.1088/0957-4484/19/03/035504
Indexed BySCI
Language英语
WOS IDWOS:000252967700012
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/63842
Collection中国科学院化学研究所
Corresponding AuthorLiu, Zhimin
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing Natl Lab Mol Sci BNLMS, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Inst Elect, State Key Lab Transducer Technol, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
An, Guimin,Zhang, Yang,Liu, Zhimin,et al. Preparation of porous chromium oxide nanotubes using carbon nanotubes as templates and their application as an ethanol sensor[J]. NANOTECHNOLOGY,2008,19(3).
APA An, Guimin.,Zhang, Yang.,Liu, Zhimin.,Miao, Zhenjiang.,Han, Buxing.,...&Li, Jianping.(2008).Preparation of porous chromium oxide nanotubes using carbon nanotubes as templates and their application as an ethanol sensor.NANOTECHNOLOGY,19(3).
MLA An, Guimin,et al."Preparation of porous chromium oxide nanotubes using carbon nanotubes as templates and their application as an ethanol sensor".NANOTECHNOLOGY 19.3(2008).
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