Department of Mechanical Engineering, Rowan University / 201 Mullica Hill Road, Glassboro, NJ 08028, USA.
Sensors (Basel). 2010;10(7):7002-17. doi: 10.3390/s100707002. Epub 2010 Jul 21.
The current work presents the results of an experimental study of the effects of the location of gold additives on the performance of combustion-generated tin dioxide (SnO(2)) nanopowders in solid state gas sensors. The time response and sensor response to 500 ppm carbon monoxide is reported for a range of gold additive/SnO(2) film architectures including the use of colloidal, sputtered, and combustion-generated Au additives. The opportunities afforded by combustion synthesis to affect the SnO(2)/additive morphology are demonstrated. The best sensor performance in terms of sensor response (S) and time response (τ) was observed when the Au additives were restricted to the outermost layer of the gas-sensing film. Further improvement was observed in the sensor response and time response when the Au additives were dispersed throughout the outermost layer of the film, where S = 11.3 and τ = 51 s, as opposed to Au localized at the surface, where S = 6.1 and τ = 60 s.
目前的工作提出了金添加剂位置对燃烧生成的二氧化锡（SnO2）纳米粉末在固态气体传感器中的性能影响的实验研究结果。报告了一系列金添加剂/SnO2薄膜结构对 500ppm 一氧化碳的时间响应和传感器响应，包括使用胶体、溅射和燃烧生成的 Au 添加剂。展示了燃烧合成在影响 SnO2/添加剂形态方面的机会。当 Au 添加剂仅限于气体传感膜的最外层时，在传感器响应（S）和时间响应（τ）方面观察到最佳的传感器性能。当 Au 添加剂分散在膜的最外层时，在传感器响应和时间响应方面观察到进一步的改进，其中 S = 11.3 和 τ = 51 s，而 Au 局部化在表面时，S = 6.1 和 τ = 60 s。
