纳米CuO-SnO_2气敏粉体的制备及气敏特性研究  

Preparation of CuO-SnO_2 Gas Sensor and Its Sensitive Effect

作　　者：范文玉[1] 李晓超[1] 王黎[1] 姚慧[1] 金飙[1] 

机构地区：[1]沈阳化工大学,辽宁沈阳110142

出　　处：《石油化工高等学校学报》2011年第2期18-21,共4页Journal of Petrochemical Universities

基　　金：国家自然科学基金资助(20773014)

摘　　要：用Sol-Gel法制备了纳米级的CuO-SnO2气敏粉体,所得粉体制作的气敏元件有较好的气敏性能。在不同的加热电压下进行实验研究,对不用浓度配比制成的气敏元件进行气敏性能测试。通过对所得粉体的表征可知,用Sol-Gel法制备出的CuO-SnO2气敏粉体是纳米级的,比表面积大,活性好,其最佳热处理温度为650℃,测试结果得出CuO摩尔分数为4%的CuO-SnO2气敏元件有较好的灵敏度和较高的选择性,并且对CO2的灵敏度和选择性比较突出。The CuO doped SnO2 nanocrystalline powders were prepared by the Sol-Gel method,which were used to manufacture gas sensors with good gas-sensing characterization.Treatment at different temperature was investigated.The gas sensitive effect on gas had been measured to the powders which had different concentrations.The results show that the prepared nano-sized powders have large specific surface area,high surface activation and the rational annealing temperature is 650 ℃,SnO2 gas sensors doped 4%（molar fraction） CuO have high sensitivity and high selectivity especially for greenhouse gas CO2.

关 键 词：SNO2 掺杂 CUO 气敏特性 温室气体CO2 

分 类 号：TQ134.32[化学工程—无机化工]