Please wait a minute...
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)   HTML
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.

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.

出版日期: 2009-11-18
:  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.
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  

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

[1] SUMIO I. Helical microtubules of graphitic carbon [J]. Nature, 1991, 354(7): 5658.
[2] KONG J, FRANKLIN N R, ZHOU C W, et al. Nanotube molecular wires as chemical sensors [J]. Science, 2000, 287(5453): 622625.
[3] COLLINS P G, BRADLEY K, ISHIGAMI M, et al. Extreme oxygen sensitivity of electronic properties of carbon nanotubes [J]. Science, 2000, 287(5459): 18011804.
[4] CHEN R J, FRANKLIN N R, KONG J, et al. Molecular photodesorption from single-walled carbon nanotubes [J]. Applied Physics Letters, 2001, 79(14): 22582260.
[5] CANTALINI C, VALENTINI L, ARMENTANO I, et al. Sensitivity to NO2 and cross-sensitivity analysis to NH3, ethanol and humidity of carbon nanotubes thin film prepared by PECVD [J]. Sensors and Actuators B:Chemical, 2003, 95(1-3): 195202.
[6] WONG Y M, KANG W P, DAVIDSON J L, et al. A novel microelectronic gas sensor utilizing carbon nanotubes for hydrogen gas detection [J]. Sensors and Actuators B: Chemical, 2003, 93(1-3): 327332.
[7] WANG S G, ZHANG Q, YANG D J, et al. Multi-walled carbon nanotube-based gas sensors for NH3 detection [J]. Diamond and Related Materials, 2004, 13(4-8): 13271332.
[8] PENZA M, CASSANO G, AVERSA P, et al. Carbon nanotubes-coated multi-transducing sensors for VOCs detection [J]. Sensors and Actuators B: Chemical, 2005, 111/112(11): 171180.
[9] KONG J, CHAPLINE M, DAI H. Functionalized carbon nanotubes for molecular hydrogen sensors [J]. Advanced Materials, 2001, 13(18): 13841386.
[10] 方向生,郭淼,陈文菊,等. 碳纳米管及其修饰物对挥发性有机物气敏性的研究[J]. 传感技术学报, 2006,19(5): 21302134.
FANG Xiang-sheng, GUO Miao, CHEN Wen-ju, et al. Study of VOCs sensing property of carbon nanotubes and their modified nano-composites [J]. Chinese Journal of Sensors and Actuators, 2006,19(5): 21302134.
[11] 袁海龙,凤仪. 碳纳米管的化学镀铜[J]. 中国有色金属学报, 2004, 14(4): 665669.
YUAN Hai-long, FENG Yi. Electroless plating of carbon nanotube with copper [J]. The Chinese Journal of Nonferrous Metals, 2004, 14(4): 665669.
[12] 朱宏伟,吴德海,徐才录. 碳纳米管[M]. 北京:机械工业出版社, 2003.
[13] LI Y H, WANG S, LUANC Z, et al. Adsorption of cadmium (II) from aqueous solution by surface oxidized carbon nanotubes [J]. Carbon, 2003, 41(5): 10571062.
[14] LI Y H, DINGA J, LUAN Z, et al. Competitive adsorption of Pd2+ , Cu2+ and Cd2+ ions from aqueous solutions by multiwalled carbon nanotubes [J]. Carbon, 2003, 41(14): 27872792.
[15] CHEN P, WU X, LIN J, et al. Synthesis of Cu nanoparticles and microsized fibers by using carbon nanotubes as a template [J]. Journal of Physical Chemistry B, 1999, 103(22): 45594561.
[16] ZHAO J J, BULDUM A, HAN J, et al. Gas molecule adsorption in carbon nanotubes and nanotube bundles [J]. Nanotechnology, 2002, 13(2): 195200.
[17] ZHAO J, BULDUM A, HAN J, et al. First-principles study of Li-intercalated carbon nanotube ropes [J]. Physical Review Letters, 2000, 85(8): 17061709.

No related articles found!