Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes

IMR OpenIR

	Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes
	Sun Xue 2; Fang Hai-tao 1; Yu Hui-long 1; Chu Yi 1; Zhang Bao-you 1; Du Jin-hong 3; Wang Da-wei 3; Li Feng 3; Wang Fu-ping 2
通讯作者	Fang Hai-tao(htfang@hit.edu.cn)
	2010-06-01
发表期刊	NEW CARBON MATERIALS
ISSN	1007-8827
卷号	25 期号:3 页码:218-224
摘要	A SnCl2 solution was used to prepare SnO2-coated multi-walled carbon nanotubes (SnO2/MWCNTs), and their hydrogen sensing properties at room temperature was studied. SEM and TEM observations indicate that SnO2 nanoparticles with a size of 5 nm are uniformly coated on the MWCNTs, forming a continuous SnO2 coating. The SnO2/MWCNTs are sensitive to 10(-4) hydrogen at room temperature. During the sensing measurement at room temperature for 10(-3) hydrogen mixed with argon gas, the current change with gas concentration is reversed after the mixed gas is switched to air. This can be ascribed to the reaction between O-2 in air and residual H-2 around the SnO2/MWCNTs to form adsorbed H2O and the subsequent desorption of H2O by substitution adsorption of O-2 in air. The H2O adsorption may lead to a decrease of the electric resistance of SnO2/MWCNTs and thus an increase of current measured. The reversal of current implies that the SnO2/MWCNTs may possess a good sensitivity to humidity at room temperature.
关键词	SnO2 Coat Multi-wall carbon nanotubes Hydrogen sensing properties
资助者	National Science Foundation of China ; Science Foundation of Heilongjiang Province
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[50472084] ; National Science Foundation of China[50602011] ; Science Foundation of Heilongjiang Province[E200517]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000279421300010
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/99773
专题	中国科学院金属研究所
通讯作者	Fang Hai-tao
作者单位	1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China 2.Harbin Inst Technol, Sch Sci, Harbin 150001, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun Xue,Fang Hai-tao,Yu Hui-long,et al. Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes[J]. NEW CARBON MATERIALS,2010,25(3):218-224.
APA	Sun Xue.,Fang Hai-tao.,Yu Hui-long.,Chu Yi.,Zhang Bao-you.,...&Wang Fu-ping.(2010).Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes.NEW CARBON MATERIALS,25(3),218-224.
MLA	Sun Xue,et al."Room-temperature hydrogen sensing properties of SnO2 -coated multi-walled carbon nanotubes".NEW CARBON MATERIALS 25.3(2010):218-224.