Influence of Ag particle size on ethanol sensing of SnO1.8:Ag nanoparticle films:: A method to develop parts per billion level gas sensors
Influence of Ag particle size on ethanol sensing of SnO1.8:Ag nanoparticle films:: A method to develop parts per billion level gas sensors
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DOI：
10.1063/1.2360245
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发表时间：
2006-10-09
影响因子：
4
通讯作者：
Kruis, F. Einar
中科院分区：
文献类型：
--
作者：
Joshi, Rakesh K.;Kruis, F. Einar
研究了Ag颗粒尺寸对SnO1.8：Ag薄膜乙醇传感性能的影响。研究表明，银纳米粒子作为催化剂的化学敏化通过溢出效应。观察到催化剂颗粒在减小其尺寸时更活跃，从而导致改进的传感器响应。对1000 ppm乙醇的响应时间为2 s。已证明使用这种定义明确的技术可检测空气中的100 ppb乙醇。(c)2006年，美国物理学会。
The influence of Ag particle size on ethanol sensing of SnO1.8:Ag films composed of size-selected nanoparticles with independently controlled size and concentration of Ag is reported in the present study. The study shows that Ag nanoparticles are acting as catalyst for chemical sensitization through a spillover effect. The catalyst particles are observed to be more active on decreasing their size, resulting into an improved sensor response. A response time of 2 s for 1000 ppm ethanol has been achieved. Detection of 100 ppb ethanol in air has been demonstrated using this well-defined technique. (c) 2006 American Institute of Physics.