SnO2/RGO复合材料的制备与气敏性能研究  

Preparation and Sensing Properties of SnO2/RGO Nanocomposites

作　　者：杨文玲[1] 张虽栓[1,2] 赵宗彦[2] YANG Wenling;ZHANG Suishuan;ZHAO Zongyan(Henan Vocational college of quality Engineering,Pigndingshan 467000,China;College of Materials Science and Engineenng Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]河南质量工程职业学院,平顶山467000 [2]昆明理工大学材料科学与工程学院,昆明650093

出　　处：《中国陶瓷》2018年第8期16-21,共6页China Ceramics

基　　金：国家自然科学基金(21473082)

摘　　要：以五水四氯化锡、氧化石墨为主要原料,氨水为沉淀剂,采用水热法一步成功合成了二氧化锡/还原氧化石墨烯（SnO2/RGO）复合材料。采用X射线衍射仪（XRD）、扫描电镜（SEM）、透射电镜（TEM）、高分辨透射电镜（HRTEM）和氮气吸附脱附仪（BET）对样品的结构和形貌进行了表征,并讨论了温度、乙醇浓度等因素对材料气敏性能的影响。结果表明,SnO2/RGO复合材料具有致密三维结构和较高的比表面积（175.83 m^2/g）。SnO2/RGO气敏元件对乙醇的气敏性能最好,在最佳工作温度为280℃时,对100 ppm乙醇的灵敏度达到20.6,比SnO2的灵敏度（8.5）提高了1倍。Tin oxide/reduced graphene oxide（SnO2/RGO） nanomaterials were synthesized by hydrothermal method using stannic chloride pentahydrate and graphite oxide as raw materials and ammonia as precipitant. The structure and morphology of the obtained samples were characterized by XRD, SEM, TEM, HRTEM and BET. We discussed the effects of temperature, ethanol concentration and other factors on sensitivity. The results indicate that SnO2/RGO has a 3D structure and high specific surface area of 175.83 m^2/g. The sensor based on SnO2/RGO exhibits good gas-sensing properties, and the sensitivity to 100 ppm ethanol is 20.6 at the optimum operating temperature（280 ℃）, which almost doubles that of the SnO2 sensor（8.5）.

关 键 词：二氧化锡 水热 复合材料 气敏性能 

分 类 号：TQ174.758.11[化学工程—陶瓷工业]