Room temperature methane detection using palladium loaded single-walled carbon nanotube sensors
Room temperature methane detection using palladium loaded single-walled carbon nanotube sensors
复制标题
DOI：
10.1016/j.cplett.2004.05.029
复制
发表时间：
2004-06-21
影响因子：
2.8
通讯作者：
Meyyappan, M
中科院分区：
文献类型：
--
作者：
Lu, YJ;Li, J;Meyyappan, M
单壁碳纳米管（SWNTs）负载钯（Pd）纳米粒子用于检测甲烷范围从6至100 ppm的空气中在室温下。Pd-SWNT纳米传感器显示出优于传统的催化珠和金属氧化物传感器的甲烷检测方面的减少的尺寸和功耗的一个因素的100和灵敏度的一个因素的10。讨论了Pd从单壁碳纳米管中吸引电子形成弱结合络合物Pddelta+（CH 4）（delta-）的电荷转移传感机理。此外，还研究了温度和紫外光对传感器特性的影响。(C)2004年由Elsevier B. V.出版
Single-walled carbon nanotubes (SWNTs) loaded with palladium (Pd) nanoparticles are used for detection of methane ranging from 6 to 100 ppm in air at room temperature. The Pd-SWNT nanosensors show advantages over conventional catalytic beads and metal oxide sensors for methane detection in terms of reduced size and power consumption by a factor of 100 and sensitivity by a factor of 10. A charge transfer sensing mechanism in which Pd attracts electrons from SWNTs to form a weakly bound complex Pddelta+(CH4)(delta-) is discussed. In addition, the elevated temperature and ultraviolet light effects on the sensor characteristics are also studied. (C) 2004 Published by Elsevier B.V.