ACTIVATION OF A GOLD ELECTRODE BY ELECTROCHEMICAL OXIDATION REDUCTION PRETREATMENT IN HYDROCHLORIC-ACID

被引：27

作者：

IZUMI, T

WATANABE, I

YOKOYAMA, Y

机构：

[1] Department of Chemistry, Faculty of Science, Osaka University, Toyonaka, Osaka

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1991年 / 303卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(91)85122-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Gold electrodes were activated for the oxidation of ascorbic acid by applying electrochemical oxidation-reduction cycles in hydrochloric acid. The electrode surfaces were examined by XPS, SEM, PXD and electrochemical techniques. The results indicate that the gold atoms on the electrode surface are rearranged to form a single-crystal-like surface by the electrochemical pretreatment. The active site must be either a (111) facet of gold, or the edges or peaks of the pyramid structure constructed from (111) facets. Heat treatment also activates the gold electrode.

引用

收藏

页码：151 / 160

页数：10

相关论文

共 36 条

[1] ROLE OF ION ADSORPTION IN SURFACE OXIDE FORMATION AND REDUCTION AT NOBLE-METALS - GENERAL FEATURES OF THE SURFACE PROCESS [J].

ANGERSTEINKOZLOWSKA, H ;

CONWAY, BE ;

BARNETT, B ;

MOZOTA, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1979, 100 (1-2) :417-446

[2] ELEMENTARY STEPS OF ELECTROCHEMICAL OXIDATION OF SINGLE-CRYSTAL PLANES OF AU .1. CHEMICAL BASIS OF PROCESSES INVOLVING GEOMETRY OF ANIONS AND THE ELECTRODE SURFACES [J].

ANGERSTEINKOZLOWSKA, H ;

CONWAY, BE ;

HAMELIN, A ;

STOICOVICIU, L .

ELECTROCHIMICA ACTA, 1986, 31 (08) :1051-1061

[3] ELEMENTARY STEPS OF ELECTROCHEMICAL OXIDATION OF SINGLE-CRYSTAL PLANES OF AU .2. A CHEMICAL AND STRUCTURAL BASIS OF OXIDATION OF THE (111) PLANE [J].

ANGERSTEINKOZLOWSKA, H ;

CONWAY, BE ;

HAMELIN, A ;

STOICOVICIU, L .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 228 (1-2) :429-453

[4] THE KINETICS OF THE REDUCTION OF PROTONS AT POLYCRYSTALLINE AND MONOCRYSTALLINE GOLD ELECTRODES [J].

BRUG, GJ ;

SLUYTERSREHBACH, M ;

SLUYTERS, JH ;

HAMELIN, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1984, 181 (1-2) :245-266

[5] HYDROUS OXIDE FORMATION ON GOLD IN BASE UNDER POTENTIAL CYCLING CONDITIONS [J].

BURKE, LD ;

HOPKINS, GP .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1984, 14 (06) :679-686

[6] AN ELECTRON-MICROSCOPIC INVESTIGATION OF THE ELECTROCHEMICAL FACETING OF PLATINUM [J].

CANULLO, J ;

UCHIDA, Y ;

LEHMPFUHL, G ;

TWOMEY, T ;

KOLB, DM .

SURFACE SCIENCE, 1987, 188 (03) :350-363

[7] ELECTROCHEMICAL FACETING OF SINGLE-CRYSTAL PLATINUM-ELECTRODES [J].

CANULLO, JC ;

TRIACA, WE ;

ARVIA, AJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 200 (1-2) :397-400

[8] CHANGES IN THE ELECTROCHEMICAL RESPONSE OF POLYCRYSTALLINE PLATINUM-ELECTRODES PROMOTED BY FAST REPETITIVE SQUARE-WAVE POTENTIAL SIGNALS [J].

CANULLO, JC ;

TRIACA, WE ;

ARVIA, AJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1984, 175 (1-2) :337-340

[9] CHANGES IN THE POLYCRYSTALLINE GOLD ELECTRODE SURFACE PRODUCED BY SQUARE-WAVE POTENTIAL PERTURBATIONS [J].

CHIALVO, AC ;

TRIACA, WE ;

ARVIA, AJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1984, 171 (1-2) :303-316

[10] 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

← 1 2 3 4 →