Electrooxidation of some phenolic compounds at Bi-doped PbO2

被引：82

作者：

Shmychkova, O. ^{[1
]}

Luk'yanenko, T. ^{[1
]}

Yakubenko, A. ^{[2
]}

Amadelli, R. ^{[3
]}

Velichenko, A. ^{[1
]}

机构：

[1] Ukrainian State Univ Chem Technol, UA-49005 Dnepropetrovsk, Ukraine

[2] State Enterprise Dnieprostandartmetrol, UA-49044 Dnepropetrovsk, Ukraine

[3] Univ Ferrara, ISOF CNR, Dipartimento Chim, I-44121 Ferrara, Italy

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2015年 / 162卷

关键词：

Lead dioxide; Methanesulfonate electrolyte; Phenolic compounds oxidation; Hydroxyl radicals; PHYSICOCHEMICAL PROPERTIES; LEAD DIOXIDE; ELECTROCHEMICAL OXIDATION; P-NITROPHENOL; ELECTROCATALYTIC OXIDATION; DIRECT ELECTROLYSIS; HYDROXYL RADICALS; ANODES; ELECTRODEPOSITION; DEGRADATION;

D O I：

10.1016/j.apcatb.2014.07.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

It has been determined that bismuth content in the oxide grows from 0.49 to 1.81 wt% while increasing the Bi3+ ions additive concentration in the solution from 1 to 10mM. It has been found that ionic additives affect the degree of hydroxylation of lead dioxide surface layer and the bond strength of the oxygen-containing particles. High surface hydration was observed for PbO2 doped with Bi3+. It was determined that the heterogeneous rate constant of oxidation of p-nitroaniline on modified lead dioxide (k(v) = 2.76 x 10(-2) min(-1)) is half as much as on nonmodified (k(v) = 1.68 x 10(-2) min(-1)). It has been revealed that the oxidation rate of p-nitrophenol and p-nitroaniline is proportional to the amount of hydroxyl radicals produced during the water oxidation, which is proposed to be used as a correlation parameter for predicting the electrocatalytic properties of materials based on lead dioxide in respect to the oxidation of organic compounds. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：346 / 351

页数：6

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