【摘要】 应用双微乳液法,在聚乙二醇辛基苯基醚(TX100)/正己醇/环己烷/水体系的W/O型微乳液中合成了掺锡和金的氧化铁前驱体,考察了主要制备条件对前驱体粒径的影响,对前驱体经400℃灼烧后所得的粉体进行了表征和气敏性测试,表明制得的共同掺杂5%mol Sn4+和0.5%mol Au3+的粉体对C2H5OH气体有较好的气敏性.更多还原

【Abstract】 The Sn/Fe2O3 and Sn/Au/Fe2O3 particles were prepared in W/O microemulsion system containing TX100/n-hexanol/cyclohexane/H2O.Some factors that affected size distribution of the precursor,such as the content of water phase,ratio of surfactant to cosurfactant and ratio of surfactant to oil phase were investigatied.The calcined particles were characterized with XRD.The measurement of gas sensitivity revealed that the material doped with 5%mol Sn+-0.5%mol Au+ exhibited good gas sensing response to C2H5OH at a low heating current.更多还原