NiO-In2O3 composite nanofibers are synthesized via electrospinning and calcining techniques. Micro-sensors are fabricated by sputtering Pt electrodes on Si chips to form sensor substrates, and then spinning the NiO-In...NiO-In2O3 composite nanofibers are synthesized via electrospinning and calcining techniques. Micro-sensors are fabricated by sputtering Pt electrodes on Si chips to form sensor substrates, and then spinning the NiO-In2O3 composite nanofibers onto the sensor substrate surface. The as-fabricated micro-sensors exhibit excellent H2S sensing properties at room temperature. The sensi- tivity of the micro-sensors is up to 6 when the sensors are exposed to 3 μL/L HzS, and the corresponding response and recovery times are 14 and 22 s, respectively. The micro-sensors also exhibit high selectivity and good stability. Especially, the micro-sensors can operate at various humidity conditions. The sensitivity of the micro-sensors is 3.8 to 3 μL/L HzS at 75% relative humidity. These characteristics make the micro-sensors good candidates for practical H2S sensors with high performance.展开更多
基金supported by the Special Fund for Agroscientific Research in the Public Interest of China(200903023)the Earmarked Fund for Modern Agroindustry Technology Research System of China([2011]3)the Guangdong Agricultural Mechanization Research Project([2010]605)
文摘NiO-In2O3 composite nanofibers are synthesized via electrospinning and calcining techniques. Micro-sensors are fabricated by sputtering Pt electrodes on Si chips to form sensor substrates, and then spinning the NiO-In2O3 composite nanofibers onto the sensor substrate surface. The as-fabricated micro-sensors exhibit excellent H2S sensing properties at room temperature. The sensi- tivity of the micro-sensors is up to 6 when the sensors are exposed to 3 μL/L HzS, and the corresponding response and recovery times are 14 and 22 s, respectively. The micro-sensors also exhibit high selectivity and good stability. Especially, the micro-sensors can operate at various humidity conditions. The sensitivity of the micro-sensors is 3.8 to 3 μL/L HzS at 75% relative humidity. These characteristics make the micro-sensors good candidates for practical H2S sensors with high performance.
