以Zn(NO3)2·6H2O为锌源,尿素为沉淀剂,氧化石墨烯(GO)为碳源,采用均匀沉淀法合成碱式碳酸锌与氧化石墨烯复合材料前驱体,350℃下焙烧前驱体2h,获得ZnO/GO复合材料,在室温下研究了该复合材料对NOx的气敏性能.通过X射线衍射、拉曼光谱、扫描电子显微镜和透射电子显微镜对材料的形貌和结构进行表征.结果表明,所得样品为六方ZnO与GO复合材料,ZnO纳米粒子较均匀的覆盖在GO的表面.当硝酸锌溶液浓度为0.3mol/L时,所合成的复合材料对NOx有较高的灵敏度,且注入NOx体积浓度97 ppm时,灵敏度为27.5％,响应时间1s,最低检测浓度可达0.97 ppm.
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