Electrochemical and in situ FTIR studies on the adsorption and oxidation of glycine and lysine in alkaline medium

被引：56

作者：

Ogura, K ^{[1
]}

Kobayashi, M ^{[1
]}

Nakayama, M ^{[1
]}

Miho, Y ^{[1
]}

机构：

[1] Yamaguchi Univ, Dept Appl Chem, Ube, Yamaguchi 755, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1998年 / 449卷 / 1-2期

关键词：

in situ FTIR; adsorption; oxidation; glycine; lysine;

D O I：

10.1016/S0022-0728(98)00015-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical oxidation of glycine and lysine in strongly alkaline solution has been studied, and the nature of the adsorbed species disclosed by means of an in situ FTIR spectroscopic method. The oxidation of water was strongly suppressed by the adsorption of the amino acids and the subsequent oxidative decomposition. The adsorption of amino acid onto the electrode was achieved through the terminal COO- group of fully unprotonated anions from + 0.4 V vs. Ag/AgCl, and the concentration of the adsorbent attained the maximum at + 0.9 V. Beyond this potential, the adsorption strength was weakened, and the oxidative decomposition to CO2, NH3, acids, etc., occurred from + 1.1 V. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：101 / 109

页数：9

共 13 条

[1]

Bellamy L.J., 1975, The Infrared Spectra of Complex Molecules, P107

[2]

FICHTER F, 1924, HELV CHIM ACTA, V7, P164

[3] INFRARED ABSORPTION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS AND THEIR SALTS [J].

GORE, RC ;

BARNES, RB ;

PETERSEN, E .

ANALYTICAL CHEMISTRY, 1949, 21 (03) :382-386

[4] Adsorption effects of electroactive species in dc polarography demonstrated in the case of the anodic waves of cysteine [J].

Heyrovsky, M ;

Vavricka, S .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 423 (1-2) :125-130

[5] THE INFLUENCE OF AMINO-ACIDS ON ELECTROCATALYTIC REACTIONS OCCURRING AT A PLATINIZED PLATINUM-ELECTRODE IN ALKALINE-MEDIUM - RADIOTRACER STUDY OF THE CHEMISORPTION OF GLYCINE [J].

HORANYI, G ;

RIZMAYER, EM .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1986, 198 (02) :393-400

[6]

HORANYI G, 1975, J ELECTROANAL CHEM, V64, P15, DOI 10.1016/0368-1874(75)80108-0

[7] Electrochemical behaviour of amino acids on Pt(h,k,l): A voltammetric and in situ FTIR study .1. Glycine on Pt(111) [J].

Huerta, F ;

Morallon, E ;

Cases, F ;

Rodes, A ;

Vazquez, JL ;

Aldaz, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 421 (1-2) :179-185

[8] INFRARED REFLECTION ABSORPTION-SPECTRA OF CYANIDE ION ADSORBED ON A PLATINUM-ELECTRODE IN SODIUM-PERCHLORATE SOLUTION [J].

KAWASHIMA, H ;

IKEZAWA, Y ;

TAKAMURA, T .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1991, 317 (1-2) :257-262

[9] CARBON-MONOXIDE ADSORPTION ON A PLATINUM-ELECTRODE STUDIED BY POLARIZATION-MODULATED FT-IR REFLECTION ABSORPTION-SPECTROSCOPY .2. CO ADSORBED AT A POTENTIAL IN THE HYDROGEN REGION AND ITS OXIDATION IN ACIDS [J].

KUNIMATSU, K ;

SEKI, H ;

GOLDEN, WG ;

GORDON, JG ;

PHILPOTT, MR .

LANGMUIR, 1986, 2 (04) :464-468

[10] SURFACE ELECTROCHEMISTRY OF THE OXIDATION OF GLYCINE AT PT [J].

MARANGONI, DG ;

SMITH, RS ;

ROSCOE, SG .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1989, 67 (05) :921-926

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