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浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (5): 911-915    DOI: 10.3785/j.issn.1008-973X.2009.05.024
动力与机械工程     
金属粒子掺杂的多壁碳纳米管气敏性研究
方向生1,2,刘伟庭1,3,陈裕泉1,潘敏1,郭淼1,4
（1.浙江大学 生物医学工程与仪器科学学院,浙江 杭州310027； 2.清华大学 环境科学与工程系,北京 100084；
3.浙江大学 流体传动及控制国家重点实验室，浙江  杭州 310027；
4.杭州电子科技大学 生物医学工程与仪器研究所,浙江 杭州310018）
Study on gas sensing property of metal particle doped multi-walled carbon nanotubes
FANG Xiang-sheng1,2, LIU Wei-ting1,3, CHEN Yu-quan1, PAN Min1, GUO Miao1,4
(1.College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, China;
2. Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China;
3. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027;
4. Institute of Biomedical Engineering and Instrument, Hangzhou Dianzi University, Hangzhou 310018, China)
 全文: PDF(897 KB)  
摘要：

分别利用化学还原和电化学镀覆方法,对经过浓硫酸浓硝酸混合液酸化预处理的多壁碳纳米管进行Pd和Cu的掺杂,并制备成电流型气敏传感器.以甲醛、苯、甲苯、二甲苯作为测试气体,通过电化学分析仪测试它们在不同气体种类和体积分数下的响应.实验结果表明,传感器在常温下具有较高的灵敏度和重复性,金属粒子的掺杂使传感器的灵敏性和选择性都有较大的改变.影响气敏特性的主要因素包括：碳纳米管自身的结构缺陷、气体分子与金属团簇的反应、金属粒子形成的局部催化活性中心.
关键词： 掺杂;  气敏传感器;  多壁碳纳米管    
Abstract:

Pd and Cu particles were doped into the multi-walled carbon nanotubes (MWCNTs) preprocessed using a mixture of H2SO4 and HNO3 by means of chemical reaction method and electrochemistry method respectively. Amperometric sensors were fabricated using the original and doped MWCNTs. The responses to formaldehyde, benzene, toluene and xylene with different volume fractions were tested using an electrochemical analyzer. High sensitivity and reproducibility of these sensors indicate the feasible VOCs detection at room temperature. Metal particles doping results in great change of sensitivity and selectivity. The main impacts on the gas sensing property include: the structural defects of MWCNTs, the interaction of gas molecules and metal clusters, and the catalytic active site formed by metal particles．
Key words: multi-walled carbon nanotubes    doping    gas sensor
出版日期: 2009-06-01
:  TP212.3  
基金资助:

国家十一五科技支撑计划资助项目（2006BAD30B03）；浙江省科技计划资助项目（2008C23081）.
通讯作者: 潘敏，男，副教授.     E-mail: panmin@cbeis.zju.edu.cn
作者简介: 方向生（1979－），男，浙江建德人，博士生，从事气敏传感器和人工嗅觉研究.
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引用本文:

方向生, 刘伟庭, 陈裕泉, 等. 金属粒子掺杂的多壁碳纳米管气敏性研究[J]. J4, 2009, 43(5): 911-915.

FANG Xiang-Sheng, LIU Wei-Ting, CHEN Yu-Quan, et al. Study on gas sensing property of metal particle doped multi-walled carbon nanotubes. J4, 2009, 43(5): 911-915.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2009.05.024    或    http://www.zjujournals.com/xueshu/eng/CN/Y2009/V43/I5/911

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