Size-controllable synthesis of monodispersed SnO2 nanoparticles and application in electrocatalysts.
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.
Jiang
Luhua
L
Direct Alcohol Fuel Cell Laboratory and State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, P.O. Box 110, Dalian 116023, China.
Sun
Gongquan
G
Zhou
Zhenhua
Z
Sun
Shiguo
S
Wang
Qi
Q
Yan
Shiyou
S
Li
Huanqiao
H
Tian
Juan
J
Guo
Junsong
J
Zhou
Bing
B
Xin
Qin
Q