ELECTROCATALYTIC PROPERTIES OF ULTRAFINE PLATINUM PARTICLES FOR OXIDATION OF METHANOL AND FORMIC-ACID IN AQUEOUS-SOLUTIONS

被引:112
作者
YAHIKOZAWA, K
FUJII, Y
MATSUDA, Y
NISHIMURA, K
TAKASU, Y
机构
[1] FAC TEXTILE SCI & TECHNOL UEDA,DEPT FINE MAT ENGN,3-15-1 TOKIDA,UEDA,NAGANO 386,JAPAN
[2] YAMAGUCHI UNIV,FAC ENGN,DEPT IND CHEM,UBE,YAMAGUCHI 755,JAPAN
关键词
ULTRAFINE PLATINUM PARTICLES; GLASSY CARBON ELECTRODE; ELECTROCHEMICAL OXIDATION; METHANOL; FORMIC ACID; CYCLIC VOLTAMMETRY;
D O I
10.1016/0013-4686(91)85302-N
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The effect of particle size of ultrafine platinum particles, which were prepared by vacuum evaporation onto a glassy carbon rod, on the electrochemical oxidation of methanol and formic acid has been examined by a cyclic voltammetry. The specific activity for the oxidation of methanol decreased by decreasing the platinum particle size, whereas that of the formic acid increased as the particle size decreased. Features of the cyclic voltammograms for the latter reaction suggested that the ratio of the exposed Pt(100) plane of platinum particles increased with decreasing the platinum particle size, while that of Pt(110) decreased.
引用
收藏
页码:973 / 978
页数:6
相关论文
共 15 条
[1]  
ADZIC RR, 1982, NATURE, V196, P137
[2]   VOLTAMMETRY OF UPD COPPER AND FORMIC-ACID AS CHARACTERIZATION OF PREFERENTIALLY ORIENTED POLYCRYSTALLINE PLATINUM SURFACES [J].
BITTINSCATTANEO, B ;
SANTOS, E ;
VIELSTICH, W .
ELECTROCHIMICA ACTA, 1986, 31 (12) :1495-1500
[3]  
CLAVILIER J, 1981, J ELECTROANAL CHEM, V124, P32
[4]  
CLAVILIER J, 1981, J ELECTROANAL CHEM, V125, P49
[5]  
ITAYA K, 1990, HYOMEN KAGAKU, V11, P18
[6]   ROLE OF PLATINUM SURFACE MORPHOLOGY ON HYDROGEN ADSORPTION-ISOTHERMS .4. [J].
KINOSHITA, K ;
STONEHART, P .
ELECTROCHIMICA ACTA, 1975, 20 (01) :101-107
[7]   STRUCTURAL EFFECTS IN ELECTROCATALYSIS - A COMPARATIVE-STUDY OF THE OXIDATION OF CO, HCOOH AND CH3OH ON SINGLE-CRYSTAL PT ELECTRODES [J].
LAMY, C ;
LEGER, JM ;
CLAVILIER, J ;
PARSONS, R .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1983, 150 (1-2) :71-77
[8]  
MOTOO S, 1985, KINZOKU HYOUMEN GIJY, V36, P386
[9]   AN APPLICATION OF A MODEL CATALYST METHOD TO A STUDY ON A SUPPORTED CATALYST ELECTRODE - EFFECTS OF PARTICLE-SIZE ON THE ELECTROCHEMICAL DESORPTION BEHAVIOR OF HYDROGEN FROM SMALL PLATINUM PARTICLES [J].
TAKASU, Y ;
FUJII, Y ;
ENAMI, E ;
MATSUDA, Y .
CHEMISTRY LETTERS, 1986, (04) :445-448
[10]   A PHOTOELECTRON SPECTROSCOPIC STUDY OF THE EFFECT OF PARTICLE-SIZE ON THE ADSORBED STATE OF CARBON-MONOXIDE OVER SUPPORTED PALLADIUM CATALYSTS [J].
TAKASU, Y ;
MATSUDA, Y ;
TOYOSHIMA, I .
CHEMICAL PHYSICS LETTERS, 1984, 108 (04) :384-387