ZnO/SnO复合纳米棒的水热合成及气敏研究  

Hydrothermal synthesis of ZnO / SnO composite nanorods as gas sensors for volatile organic compounds detection

作　　者：封振宇[1] 包文亚[1] 张诗舒 张俊彦[1] 张正林[2] 

机构地区：[1]山东大学化学与化工学院,山东济南250100 [2]哈尔滨师范大学化学化工学院,黑龙江哈尔滨150025

出　　处：《山东大学学报（理学版）》2014年第7期18-22,共5页Journal of Shandong University(Natural Science)

摘　　要：运用水热法合成六方纤锌矿ZnO纳米棒,在ZnO纳米棒表面水热生长SnO,获得了表面疏松的ZnO/SnO复合纳米棒材料。运用X射线粉末衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、电子能谱(EDS)等手段表征了该材料的形貌和组成。BET氮吸附测试表明其表面疏松结构具有11.38 m2/g的比表面积。气敏实验证明了该材料对甲醛气体具有百万分率浓度级检测灵敏度,对于开发甲醛传感材料具有理论意义和潜在应用价值。The Porous ZnO/SnO composite nanorods were fabricated through hydrothermal method.The prepared hexa-gonal wurtzite structure ZnO nanorods were coated by SnO as porous shells.The structure and morphology of the result-ant products were characterized by X-ray diffraction （ XRD） , transmission electron microscopy （ TEM） , scanning elec-tron microscopy （SEM） and energy dispersive spectrdmeter （EDS）.The BET nitrogen adsorption-desorption tech-nique indicated the as-prepared composite nanorods with 11.38 m2/g surface area.The gas sensing properties of the as-prepared ZnO/SnO composite nanorods were investigated.The composite nanorods exhibited a superior gas sensing per-formance toward ppm level formaldehyde vapor, implying promising applications in detecting toxic volatile organic compounds （ VOCs） .

关 键 词：ZNO SNO 气敏 复合纳米棒 

分 类 号：O614[理学—无机化学]