Jiang Luhua, Sun Gongquan, Zhou Zhenhua, Sun Shiguo, Wang Qi, Yan Shiyou, Li Huanqiao, Tian Juan, Guo Junsong, Zhou Bing, Xin Qin
Direct Alcohol Fuel Cell Laboratory and State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, P.O. Box 110, Dalian 116023, China.
J Phys Chem B. 2005 May 12;109(18):8774-8. doi: 10.1021/jp050334g.
Size-controllable tin oxide nanoparticles are prepared by heating ethylene glycol solutions containing SnCl(2) at atmospheric pressure. The particles were characterized by means of transmission electron microscopic (TEM), X-ray diffraction (XRD) studies. TEM micrographs show that the obtained material are spherical nanoparticles, the size and size distribution of which depends on the initial experimental conditions of pH value, reaction time, water concentration, and tin precursor concentration. The XRD pattern result shows that the obtained powder is SnO(2) with tetragonal crystalline structure. On the basis of UV/vis and FTIR characterization, the formation mechanism of SnO(2) nanoparticles is deduced. Moreover, the SnO(2) nanoparticles were employed to synthesize carbon-supported PtSnO(2) catalyst, and it exhibits surprisingly high promoting catalytic activity for ethanol electrooxidation.
通过在大气压下加热含有SnCl₂的乙二醇溶液来制备尺寸可控的氧化锡纳米颗粒。通过透射电子显微镜（TEM）、X射线衍射（XRD）研究对颗粒进行了表征。TEM显微照片表明，所获得的材料是球形纳米颗粒，其尺寸和尺寸分布取决于pH值、反应时间、水浓度和锡前驱体浓度等初始实验条件。XRD图谱结果表明，所获得的粉末是具有四方晶体结构的SnO₂。基于紫外可见光谱（UV/vis）和傅里叶变换红外光谱（FTIR）表征，推导了SnO₂纳米颗粒的形成机理。此外，采用SnO₂纳米颗粒合成了碳载PtSnO₂催化剂，该催化剂对乙醇电氧化表现出惊人的高促进催化活性。
