共沉淀
兴奋剂
透射电子显微镜
选择性
材料科学
扫描电子显微镜
分析化学(期刊)
功率消耗
纳米颗粒
衍射
核化学
化学
纳米技术
无机化学
光电子学
催化作用
功率(物理)
色谱法
光学
有机化学
量子力学
物理
复合材料
作者
Li Wang,F.M. Kong,Baolin Zhu,Shurong Wang,Shihua Wu,Wei‐Ping Huang
标识
DOI:10.1016/j.mseb.2007.04.004
摘要
Pd-doped α-Fe2O3 nanoparticles were synthesized by chemical coprecipitation method and characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The gas sensing properties of undoped and Pd-doped α-Fe2O3 sensors were investigated. Compared with the undoped one, the doped sensors exhibited higher response, better selectivity, and faster response/recovery to H2S. The operating temperature of α-Fe2O3 to H2S is decreased after the addition of Pd, which result in the relative low power consumption in H2S detection. Among all the doped sensors, the sensor of 1.5 wt% Pd/α-Fe2O3 showed the largest response (128.3) to 100 ppm H2S at 160 °C.
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