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首页> 外文期刊>Sensors and Actuators >Methane sensor based on nanocomposite of palladium/multi-walled carbon nanotubes grafted with 1,6-hexanediamine
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Methane sensor based on nanocomposite of palladium/multi-walled carbon nanotubes grafted with 1,6-hexanediamine

机译：基于接枝有1,6-己二胺的钯/多壁碳纳米管纳米复合材料的甲烷传感器

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摘要

Palladium nanoparticles (PdNPs) were electrolessly deposited on 1,6-hexanediamine grafted multi-walled carbon nanotubes (MWCNTs) to form nanocomposite which was then characterized by scanning electron microscopy, proton nuclear magnetic resonance spectroscopy, and infrared spectroscopy. First, the electrocatalytic activity of MWCNT/PdNPs for methane (CH_4) on a gold electrode in 0.50 M H_2SO_4 was studied by cyclic voltammetry and the results demonstrated that MWCNT/PdNPs could be employed to oxidize CH_4. A simple CH_4 sensor was then fabricated by depositing the MWCNT/PdNPs nanocomposite onto an indium tin oxide substrate. The effects of carrier gas, amount of nanocomposite and temperature on the response of the sensor were investigated in detail. The sensor exhibits good sensitivity and selectivity to CH_4 in dry air at ambient conditions. It showed linear response to CH_4 at 0-16% v/v with a detection limit of 0.167% v/v (signaloise = 3). The response and recovery times were less than 35 and 12 s, respectively. Common gases such as N_2, CO and CO_2 showed no interference but H_2 and NH_3 displayed slight interference to the sensor.
机译：钯纳米粒子（PdNPs）化学沉积在1,6-己二胺接枝的多壁碳纳米管（MWCNTs）上形成纳米复合材料，然后通过扫描电子显微镜，质子核磁共振波谱和红外光谱对其进行表征。首先，通过循环伏安法研究了MWCNT / PdNPs对0.50 M H_2SO_4中金​​电极上甲烷（CH_4）的电催化活性，结果表明，MWCNT / PdNPs可用于氧化CH_4。然后通过将纳米碳纳米管MWCNT / PdNPs沉积到氧化铟锡衬底上来制造简单的CH_4传感器。详细研究了载气，纳米复合材料的量和温度对传感器响应的影响。该传感器在环境条件下的干燥空气中对CH_4表现出良好的灵敏度和选择性。它显示了在0-16％v / v下对CH_4的线性响应，检出限为0.167％v / v（信号/噪声= 3）。响应时间和恢复时间分别小于35和12 s。诸如N_2，CO和CO_2之类的常见气体无干扰，但H_2和NH_3对传感器有轻微干扰。

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  • 来源
    《Sensors and Actuators》 |2009年第2期|453-459|共7页
  • 作者

    Zhongping Li; Junfen Li; Xu Wu; Shaomin Shuang; Chuan Dong; Martin M.F. Choi;

  • 作者单位

    Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China;

    Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China;

    School of Chemical Engineering, Taiyuan University of Technology, Taiyuan, 030006, PR China;

    Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China;

    Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China;

    Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    methane; sensor; palladium/MWCNT nanocomposites; ITO glass;

    机译：甲烷传感器;钯/ MWCNT纳米复合材料;ITO玻璃;

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