Electro-oxidation of Some Phenolic Compounds by Electrogenerated O3 and by Direct Electrolysis at PbO2 Anodes

被引：78

作者：

Amadelli, Rossano ^{[1
]}

Samiolo, Luca ^{[1
]}

De Battisti, Achille ^{[2
]}

Velichenko, Alexander B. ^{[3
]}

机构：

[1] Univ Ferrara, Dept Chem, UOS Ferrara, CNR ISOF, I-44121 Ferrara, Italy

[2] Univ Ferrara, Dept Biol & Evolut, I-44121 Ferrara, Italy

[3] Ukrainian State Univ Chem Technol, Dept Phys Chem, UA-49005 Dnepropetrovsk, Ukraine

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2011年 / 158卷 / 07期

关键词：

OXYGEN-TRANSFER REACTIONS; ELECTROCHEMICAL OXIDATION; LEAD DIOXIDE; AQUEOUS-SOLUTIONS; OZONE PRODUCTION; WATER; ELECTROCATALYSIS; EVOLUTION; ELECTRODES; OZONATION;

D O I：

10.1149/1.3589913

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The oxidative degradation of phenolic compounds (4-chlorophenol and 4-nitrophenol) was studied using different electrochemical systems involving ozone formation at PbO2 anodes: (i) direct electrolysis at constant current; (ii) ex-situ use of O-3 and (iii) combined use of anodically generated stream of O-3/O-2 fed into the cathode where H2O2 is electrogenerated by O-2 reduction. We show that the latter advanced oxidation method gives the best results: it is a Fenton-type degradation of the target pollutants taking place in the cathodic compartment by reason of the highly oxidizing environment brought about by radicals that are formed mainly in the reactions of O-3 with OH- and HO2-. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3589913] All rights reserved.

引用

页码：P87 / P92

页数：6

共 53 条

[1] Ultrasonic intensification of ozone and electrochemical destruction of 1,3-dinitrobenzene and 2,4-dinitrotoluene [J].