Multi-walled Carbon Nanotube-based Gas Sensor for NH3 Detection at Room Temperature

被引：0
|
作者：
Guo Miao [1 ]
Wu Kai-Hua [1 ]
Xu Ying [1 ]
Wang Ren-Hui [2 ]
Pan Min [2 ]
机构：
[1] Hangzhou Dianzi Univ, Inst Biomed Engn & Instrument, Hangzhou, Zhejiang, Peoples R China
[2] Zhejiang Univ, Dept Biomed Engn, Hangzhou, Zhejiang, Peoples R China
来源：
2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010) | 2010年
关键词：
Multi-walled carbon nanotubes (MWNTs); sensor; conductance; ammonia(NH3); thiol; DEPOSITION; ADSORPTION;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Gas sensors based on Multi-walled carbon nanotubes(MWNTs) for Ammonia(NH3) detection at room temperature were studied. MWNT were prepared by chemical vapor deposition method, and coated on Au electrodes, which were sputtered on anodised aluminium substrate and then immersed in thiol solution for 24h. It is found that the MWNT based sensors have a reversible sensing capacity to NH3 gas with response time and recovery time were less than 1min, respectively. At room temperature of 25 degrees C resistance changes of the sensor were logarithmic dependent on NH3 gas concentrations. It is suggested that MWNTs could be a promising sensing material for NH3 detection at room temperature.
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页数：3
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