ELECTROCATALYTIC OXIDATION OF HYDRAZINE IN ACID-MEDIA ON POLYANILINE-FILMED VITREOUS CARBON

被引：30

作者：

DOUBOVA, L ^{[1
]}

FABRIZIO, M ^{[1
]}

MENGOLI, G ^{[1
]}

VALCHER, S ^{[1
]}

机构：

[1] UNIV BOLOGNA,DIPARTIMENTO CHIM G CIAMICIAN,I-40126 BOLOGNA,ITALY

来源：

ELECTROCHIMICA ACTA | 1990年 / 35卷 / 09期

关键词：

electrochemical; hydrazine; polyaniline film;

D O I：

10.1016/0013-4686(90)85016-G

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

0.5 M hydrazine in aqueous H2SO4 for pHs in the range 1.5-3.75 catalytically oxidizes on polyaniline-filmed vitreous carbon, whereas the process is totally inhibited on the bare electrode substrate. The pH dependence of the reducing power of hydrazine accounts for the onset potential of the oxidation, while the currents are under pure kinetic control. A kinetic analysis of the "chemical" reduction of the emeraldine by hydrazine indicates that its rate characterizes the currents. Catalytic oxidation is faster in aprotic medium but the currents are transient owing to progressive deactivation of the polymer electrode. © 1990.

引用

页码：1425 / 1431

页数：7

共 26 条

[1] CATALYSIS OF ELECTROCHEMICAL REACTIONS AT REDOX POLYMER ELECTRODES - KINETIC-MODEL FOR STATIONARY VOLTAMMETRIC TECHNIQUES
ANDRIEUX, CP
DUMASBOUCHIAT, JM
SAVEANT, JM
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 131 (JAN) : 1 - 35
[2] THEORETICAL-STUDIES ON MODELS OF POLYANILINE
CHANCE, RR
BOUDREAUX, DS
[J]. SYNTHETIC METALS, 1987, 18 (1-3) : 329 - 334
[3] POLYANILINE - PROTONIC ACID DOPING OF THE EMERALDINE FORM TO THE METALLIC REGIME
CHIANG, JC
MACDIARMID, AG
[J]. SYNTHETIC METALS, 1986, 13 (1-3) : 193 - 205
[4] AN AC AND ELECTROHYDRODYNAMIC (EHD) IMPEDANCE INVESTIGATION OF REDOX PROCESSES OCCURRING AT POLYANILINE-COATED ELECTRODES
DESLOUIS, C
MUSIANI, MM
TRIBOLLET, B
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 264 (1-2): : 57 - 76
[5] ELECTROCHEMICAL CHAINS USING PROTOLYTIC ORGANIC SEMICONDUCTORS
DESURVIL.R
JOZEFOWI.M
YU, LT
PERICHON, J
BUVET, R
[J]. ELECTROCHIMICA ACTA, 1968, 13 (06) : 1451 - &
[6] ELECTROACTIVE POLYANILINE FILMS
DIAZ, AF
LOGAN, JA
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1980, 111 (01): : 111 - 114
[7] POLYANILINE AS A CATHODE FOR O2 REDUCTION-KINETICS OF THE REACTION WITH H2O2 AND USE OF THE POLYMER IN A MODEL H2O2 FUEL-CELL
DOUBOVA, L
MENGOLI, G
MUSIANI, MM
VALCHER, S
[J]. ELECTROCHIMICA ACTA, 1989, 34 (03) : 337 - 343
[8] CATALYTIC REDUCTION OF O-2 AT POLYANILINE CATHODES IN THE PRESENCE OF CUII
DOUBOVA, LM
MENGOLI, G
VALCHER, S
ZOTTI, G
[J]. MATERIALS CHEMISTRY AND PHYSICS, 1989, 22 (3-4) : 401 - 416
[9] ANODIC OXIDATION OF HYDRAZINE AND ITS DERIVATIVES .1. OXIDATION OF HYDRAZINE ON GOLD ELECTRODES IN ACID SOLUTIONS
EISNER, U
GILEADI, E
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1970, 28 (01): : 81 - &
[10] EISNER U, 1979, ENCY ELECTROCHEMISTR, V13, P219

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