Highly Sensitive Detection of Carbon Monoxide at Room Temperature Using Platinum-Decorated Single-Walled Carbon Nanotubes
Highly Sensitive Detection of Carbon Monoxide at Room Temperature Using Platinum-Decorated Single-Walled Carbon Nanotubes
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DOI：
10.1143/apex.1.014004
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发表时间：
2008-01
影响因子：
2.3
通讯作者：
W. Wongwiriyapan;Satoshi Inoue;T. Ito;R. Shimazaki;T. Maekawa;Kengo Suzuki;H. Ishikawa;S. Honda;K. Oura;M. Katayama
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文献类型：
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作者：
W. Wongwiriyapan;Satoshi Inoue;T. Ito;R. Shimazaki;T. Maekawa;Kengo Suzuki;H. Ishikawa;S. Honda;K. Oura;M. Katayama
我们展示了高灵敏度的检测一氧化碳（CO）在室温下使用铂装饰的单壁碳纳米管（Pt-SWNTs）低至1 ppm。所获得的灵敏度CO是3-4个订单高于官能化的单壁碳纳米管报道的值，并实现了由Pt纳米粒子在单壁碳纳米管上的控制沉积。对于1-10 ppm的CO，传感器响应随CO浓度线性增加，提供了在低浓度范围内的CO的定量检测。此外，Pt-SWNTs表现出对CO对H2的检测选择性。的传感机制是由于电子捐赠的单壁碳纳米管作为一个结果的CO氧化的Pt催化剂表面。
We demonstrated highly sensitive detection of carbon monoxide (CO) down to 1 ppm at room temperature using platinum-decorated single-walled carbon nanotubes (Pt-SWNTs). The obtained sensitivity to CO was 3–4 orders higher than the values reported for functionalized SWNTs, and was achieved by the controlled deposition of Pt nanoparticles on SWNTs. For 1–10 ppm of CO, the sensor response linearly increased with CO concentration, affording the quantitative detection of CO in a low-concentration range. Furthermore, Pt-SWNTs exhibited detection selectivity to CO against H2. The sensing mechanism was attributed to electron donation to the SWNTs as a result of CO oxidation on the Pt catalyst surface.