Current oscillations during formic acid oxidation on a Pt electrode:: Insight into the mechanism by time-resolved IR spectroscopy

被引:157
作者
Samjeské, G
Osawa, M
机构
[1] Hokkaido Univ, Catalysis Res Ctr, Kita Ku, Sapporo, Hokkaido 0010021, Japan
[2] JST, CREST, Kawaguchi, Saitama 3320012, Japan
关键词
electrochemistry; formic acid; IR spectroscopy; oxidation; surface chemistry;
D O I
10.1002/anie.200501009
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Graph Presented) Revised model: Current oscillations in the electrooxidation of formic acid at a fixed potential can be observed by time-resolved surface-enhanced infrared absorption spectroscopy (see picture). Real-time probing of the reaction dynamics on the electrode surface provides new insight into the oscillations that are not accessible by conventional techniques. The reaction mechanism involves adsorbed formate as a reactive intermediate. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:5694 / 5698
页数:5
相关论文
共 33 条
[21]  
Muller E, 1928, Z ELKTROCHEM ANGEW P, V34, P256
[22]  
NICHOLS RJ, 1992, ADSORPTION MOL METAL, P347
[23]   MECHANISTIC STUDIES OF THE POTENTIAL OSCILLATION AND INDUCTION PERIOD IN THE OXIDATION OF FORMIC-ACID ON PLATINUM [J].
OKAMOTO, H .
ELECTROCHIMICA ACTA, 1992, 37 (01) :37-42
[24]   Modelling temporal kinetic oscillations for electrochemical oxidation of formic acid on Pt [J].
Okamoto, H ;
Tanaka, N ;
Naito, M .
CHEMICAL PHYSICS LETTERS, 1996, 248 (3-4) :289-295
[25]   Dynamic processes in electrochemical reactions studied by surface-enhanced infrared absorption spectroscopy (SEIRAS) [J].
Osawa, M .
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1997, 70 (12) :2861-2880
[26]   SURFACE-ENHANCED INFRARED ATR SPECTROSCOPY FOR IN-SITU STUDIES OF ELECTRODE-ELECTROLYTE INTERFACES [J].
OSAWA, M ;
ATAKA, K ;
YOSHII, K ;
YOTSUYANAGI, T .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1993, 64-5 :371-379
[27]  
OSAWA M, 2002, VIB SPECTROSC, V1, P785
[28]   CURRENT OSCILLATIONS IN THE ELECTROCHEMICAL OXIDATION OF FORMIC-ACID AT PT SINGLE-CRYSTAL SURFACES [J].
RASPEL, F ;
EISWIRTH, M .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (31) :7613-7618
[29]   Oscillatory behavior in the electrochemical oxidation of formic acid on Pt(100): rotation and temperature effects [J].
Schmidt, TJ ;
Grgur, BN ;
Markovic, NM ;
Rose, PN .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 500 (1-2) :36-43
[30]   KINETIC-MODELS OF SURFACE EXPLOSIONS [J].
SHARPE, RG ;
BOWKER, M .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (32) :6379-6392