Ring-Disk Electrode Study of the Reduction of Bismuth on Platinum

S. H. Cadle; Stanley Bruckenstein

doi:10.1021/ac60320a011

Ring-Disk Electrode Study of the Reduction of Bismuth on Platinum

S. H. Cadle
, Stanley Bruckenstein

Chemistry

University at Buffalo

Vassar College

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Current-potential curves of Bi(III) in 0.12M perchloric acid show three reduction processes in the cathodic potential scan and six oxidation processes in the anodic scan. The cathodic processes are the reduction of adsorbed bismuth, reduction of bismuth at under-potential, and theconvective-diffusion controlled limiting wave for bismuth reduction, which produces distinct surface layers of bismuth in depths of two, three, and four monolayers as well as bulk alloy and bulk bismuth. The anodic processes are the oxidation of underpotential bismuth, the oxidation of surface layers of bismuth, which give three stripping peaks, and the oxidation of a bulk alloy and of bulk bismuth. The oxidation of the alloyed bismuth roughens the electrode. A study of isopotential points is used to determine the stoichiometric Bi-Pt ratios for electrode regions which exist on a bismuth plated electrode suface at different potentials.

Original language	English
Pages (from-to)	1993-2001
Number of pages	9
Journal	Analytical Chemistry
Volume	44
Issue number	12
DOIs	https://doi.org/10.1021/ac60320a011
State	Published - Oct 1 1972

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title = "Ring-Disk Electrode Study of the Reduction of Bismuth on Platinum",

abstract = "Current-potential curves of Bi(III) in 0.12M perchloric acid show three reduction processes in the cathodic potential scan and six oxidation processes in the anodic scan. The cathodic processes are the reduction of adsorbed bismuth, reduction of bismuth at under-potential, and theconvective-diffusion controlled limiting wave for bismuth reduction, which produces distinct surface layers of bismuth in depths of two, three, and four monolayers as well as bulk alloy and bulk bismuth. The anodic processes are the oxidation of underpotential bismuth, the oxidation of surface layers of bismuth, which give three stripping peaks, and the oxidation of a bulk alloy and of bulk bismuth. The oxidation of the alloyed bismuth roughens the electrode. A study of isopotential points is used to determine the stoichiometric Bi-Pt ratios for electrode regions which exist on a bismuth plated electrode suface at different potentials.",

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TY - JOUR

T1 - Ring-Disk Electrode Study of the Reduction of Bismuth on Platinum

AU - Cadle, S. H.

AU - Bruckenstein, Stanley

PY - 1972/10/1

Y1 - 1972/10/1

N2 - Current-potential curves of Bi(III) in 0.12M perchloric acid show three reduction processes in the cathodic potential scan and six oxidation processes in the anodic scan. The cathodic processes are the reduction of adsorbed bismuth, reduction of bismuth at under-potential, and theconvective-diffusion controlled limiting wave for bismuth reduction, which produces distinct surface layers of bismuth in depths of two, three, and four monolayers as well as bulk alloy and bulk bismuth. The anodic processes are the oxidation of underpotential bismuth, the oxidation of surface layers of bismuth, which give three stripping peaks, and the oxidation of a bulk alloy and of bulk bismuth. The oxidation of the alloyed bismuth roughens the electrode. A study of isopotential points is used to determine the stoichiometric Bi-Pt ratios for electrode regions which exist on a bismuth plated electrode suface at different potentials.

AB - Current-potential curves of Bi(III) in 0.12M perchloric acid show three reduction processes in the cathodic potential scan and six oxidation processes in the anodic scan. The cathodic processes are the reduction of adsorbed bismuth, reduction of bismuth at under-potential, and theconvective-diffusion controlled limiting wave for bismuth reduction, which produces distinct surface layers of bismuth in depths of two, three, and four monolayers as well as bulk alloy and bulk bismuth. The anodic processes are the oxidation of underpotential bismuth, the oxidation of surface layers of bismuth, which give three stripping peaks, and the oxidation of a bulk alloy and of bulk bismuth. The oxidation of the alloyed bismuth roughens the electrode. A study of isopotential points is used to determine the stoichiometric Bi-Pt ratios for electrode regions which exist on a bismuth plated electrode suface at different potentials.

UR - https://www.scopus.com/pages/publications/0000537521

U2 - 10.1021/ac60320a011

DO - 10.1021/ac60320a011

M3 - Article

SN - 0003-2700

VL - 44

SP - 1993

EP - 2001

JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 12

ER -

Ring-Disk Electrode Study of the Reduction of Bismuth on Platinum

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