Significant enhancement of the electrochemical reduction of CO2 at the kink sites on Pt(S)-[n(110) x (100)] and Pt(S)-[n(100) x (110)]

被引：37

作者：

Hoshi, N ^{[1
]}

Kawatani, S ^{[1
]}

Kudo, M ^{[1
]}

Hori, Y ^{[1
]}

机构：

[1] Chiba Univ, Fac Engn, Dept Appl Chem, Inage Ku, Chiba 2638522, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 467卷 / 1-2期

关键词：

electrochemical reduction of carbon dioxide; Pt(S)-[n(110) x (100); Pt(S)-[n(100) x (110); kink; electrocatalytic activity;

D O I：

10.1016/S0022-0728(98)00476-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The surface structures giving high activity in CO2 reduction were studied using voltammetry with kinked step surfaces of platinum: Pt(S)-[n(110) x (100)] (n = 2, 9), Pt(S)-[n(100) x (110)] (n = 2, 3, 9). The reduction rates of CO2 on Pt(S)-[n(110) x (100)] electrodes were higher than those on Pt(110) which gave the highest activity among the stepped surfaces reported previously. The rates on Pt(S)-[n(100) x (110)] were over twice as high as those on Pt(S)-[n(100) x (111)]. Pt(210) = Pt(S)-[2(100) x (110)] gave the highest rate of CO2 reduction. This remarkably high activity in CO2 reduction may be derived from the kink sites characteristic of Pt(S)-[n(110) x (100)] and Pt(S)-[n(100) x (110)]. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：67 / 73

页数：7

共 50 条

[1]

Adzic R. R., 1990, MOD ASPECT ELECTROC, V21, P163

[2]

ADZIC RR, 1993, SURF SCI LETT, V293, P876

[3] Specificity of the kinetics of H2, evolution to the structure of single-crystal Pt surfaces, and the relation between opd and upd H [J].

Barber, J ;

Morin, S ;

Conway, BE .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1998, 446 (1-2) :125-138

[4] ON THE NATURE OF REDUCED CO2 AN IR SPECTROSCOPIC INVESTIGATION [J].

BEDEN, B ;

BEWICK, A ;

RAZAQ, M ;

WEBER, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 139 (01) :203-206

[5] STABILITY AND STRUCTURE OF HIGH MILLER INDEX PLATINUM CRYSTAL-SURFACES IN VACUUM AND IN PRESENCE OF ADSORBED CARBON AND OXYGEN [J].

BLAKELY, DW ;

SOMORJAI, GA .

SURFACE SCIENCE, 1977, 65 (02) :419-442

[6] PREPARATION OF MONO-CRYSTALLINE PT MICROELECTRODES AND ELECTROCHEMICAL STUDY OF THE PLANE SURFACES CUT IN THE DIRECTION OF THE (111) AND (110) PLANES [J].

CLAVILIER, J ;

FAURE, R ;

GUINET, G ;

DURAND, R .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1980, 107 (01) :205-209

[7] HYDROGEN ADSORPTION ON PLATINUM SINGLE-CRYSTAL SURFACES [J].

FURUYA, N ;

KOIDE, S .

SURFACE SCIENCE, 1989, 220 (01) :18-28

[8] RELAXATION AT HIGH-INDEX SURFACES STUDIED BY ATOMIC-RESOLUTION SCANNING TUNNELING MICROSCOPY - AU(311), (533), AND (221) ELECTROCHEMICAL INTERFACES [J].

GAO, XP ;

HAMELIN, A ;

WEAVER, MJ .

SURFACE SCIENCE, 1992, 274 (03) :L588-L592

[9] REAL-SPACE FORMATION AND DISSIPATION MECHANISMS OF HEXAGONAL RECONSTRUCTION ON AU(100) IN AQUEOUS-MEDIA AS EXPLORED BY POTENTIODYNAMIC SCANNING-TUNNELING-MICROSCOPY [J].

GAO, XP ;

EDENS, GJ ;

HAMELIN, A ;

WEAVER, MJ .

SURFACE SCIENCE, 1993, 296 (03) :333-351

[10]

Giner J, 1963, Electrochim Acta, V8, P857, DOI [10.1016/0013-4686(63)80054-7, DOI 10.1016/0013-4686(63)80054-7]

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