8.4.4 Enhanced H2S Sensing Properties of Porous SnO2 Nanofibers Modified with CuO

Yan Zhao, Xiuli He, Jianping Li, Xiaoguang Gao & Jian Jia
Porous SnO2 nanofibers were fabricated by electrospinning and oxygen plasma treatment. Subsequently, CuO was sputtered on the porous SnO2 fibers as the modifier. H2S sensing properties of the fibers were tested and the effect of CuO amount on the response and recovery characteristics to H2S was investigated. It was found that the response is strongly dependent on the CuO amount and the response time and recovery time become longer with the increase of the CuO...