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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >H_2S-sensing characteristics of Cd_2Sb_2O_7 thick film sensor prepared by co-precipitation method
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H_2S-sensing characteristics of Cd_2Sb_2O_7 thick film sensor prepared by co-precipitation method

机译：共沉淀法制备的Cd_2Sb_2O_7厚膜传感器的H_2S传感特性

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摘要

Sensing properties to dilute volatile sulfides such as H_2S, CH_3SH and (CH_3)_2S have been investigated for Cd_2Sb_2O_7 thick film sensor prepared by precipitation method. Cd(NO_3)_2·4H_2O and Sb_2O_3 were used as staring materials. Effects of calcining temperature on gas-sensing properties, sensitivity-operating temperature, and sensitivity-gas concentration were investigated. The crystal structure and surface morphology were examined by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results demonstrated that the Cd_2Sb_2O_7 sensor prepared by using the powder calcined at 700℃ showed high sensitivity as well as good selectivity to dilute H_2S at 200℃. Especially, the Cd_2Sb_2O_7 sensor showed the sensitivity as high as 4 even to 0.01 ppm H_2S.
机译：研究了通过沉淀法制备的Cd_2Sb_2O_7厚膜传感器对H_2S，CH_3SH和（CH_3）_2S等挥发性硫化物的稀释特性。 Cd（NO_3）_2·4H_2O和Sb_2O_3被用作凝视材料。研究了煅烧温度对气体传感性能，灵敏度工作温度和灵敏度气体浓度的影响。分别通过X射线衍射（XRD）和扫描电子显微镜（SEM）检查晶体结构和表面形态。结果表明，用700℃煅烧的粉末制备的Cd_2Sb_2O_7传感器具有很高的灵敏度，并且在200℃时具有很好的选择性稀释H_2S。尤其是，Cd_2Sb_2O_7传感器甚至在0.01 ppm H_2S时也显示出高达4的灵敏度。

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