ZnO/ZnSnO_3纳米复合物的制备及其HCHO气敏性研究  

Preparation and HCHO-Sensing Properties of ZnO/ZnSnO_3 Nano Composites

作　　者：王炳山[1] 袁建军[2] 韩文华[1] 刘建华[1] 吴翠[1] 

机构地区：[1]景德镇学院生物与化学工程系,景德镇333000 [2]江西师范大学理化测试中心,南昌330022

出　　处：《材料导报》2015年第20期47-50,69,共5页Materials Reports

基　　金：江西省教育厅2014科技资助项目(GJJ14785);江西省景德镇市2014工业科技资助项目(14-6-23)

摘　　要：采用水热法在不同温度下制得两种氧化锌/偏锡酸锌(ZnO/ZnSnO3)复合氧化物。通过XRD、SEM、比表面积及孔隙度分析仪分别对复合氧化物的晶体结构、微观形貌、比表面积等进行表征,结果表明,160℃水热条件制得了氧化锌/片状偏锡酸锌纳米复合氧化物,而180℃条件下制得了颗粒状ZnO/ZnSnO3纳米复合物,平均粒径16nm。采用传统旁热式结构对上述两复合氧化物进行HCHO敏感性能研究,结果发现两种复合氧化物对甲醛都表现出良好的气敏特性,其中氧化锌/片状偏锡酸锌复合氧化物的甲醛气敏特性尤为突出,工作温度110℃时对0.5×10-6甲醛有很好的响应。Two kinds of zinc oxide/zinc stannate（ZnO/ZnSnO3）composite oxides have been successfully synthesized using hydrothermal method at different temperatures.X-ray diffraction（XRD）,scanning electron microscopy（SEM）and specific surface area analysis have been employed to characterize the crystal structure and morphology of the as-synthesized ZnO/ZnSnO3 composites.The results indicated that zinc oxide/flake zinc stannate composite was prepared under 160 ℃.And the zinc oxide/zinc stannate composite which synthesized under 180 ℃ by hydrothermal method was graininess,with an average diameter of 16 nm.The as-fabricated sensors based on both of zinc oxide/zinc stannate composites showed high sensitivity toward HCHO gas.And the sensors based on zinc oxide/flake zinc stannate composite is particularly prominent in HCHO gas sensing properties,which can reach as little as lower than0.5×10-6 HCHO at 110 ℃.

关 键 词：水热法 ZnO/ZnSnO3复合氧化物 气敏性 甲醛 

分 类 号：O614[理学—无机化学]