Preparation of foam-nickel composite electrode and its application to 2,4-dichlorophenol dechlorination in aqueous solution

被引：47

作者：

Sun, Zhirong ^{[2
]}

Ge, Hui ^{[2
]}

Hu, Xiang ^{[1
]}

Peng, Yongzhen ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China

[2] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2010年 / 72卷 / 02期

基金：

中国国家自然科学基金;

关键词：

2,4-Dichlorophenol; Electrochemically; Dechlorination; Pd/PPy/foam-Ni electrode; ELECTROCHEMICALLY REDUCTIVE DECHLORINATION; GLASSY-CARBON ELECTRODE; ELECTROCATALYTIC HYDRODECHLORINATION; RADICAL-ANION; DEGRADATION; 4-CHLOROPHENOL; OXIDATION; PHENOLS; OXIDE; HYDRODEHALOGENATION;

D O I：

10.1016/j.seppur.2010.01.014

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Electrochemically reductive dechlorination of 2,4-dichlorophenol in aqueous solution was investigated on palladium/polymeric pyrrole film/foam-nickel (Pd/PPy/foam-Ni) electrode at ambient temperature. Pd/PPy/foam-Ni electrode, which provided catalytic surface for reductive dechlorination of 2,4-dichlorophenol, was prepared with an electrodepositing method. Cyclic voltammetry (CV) tests reveal that the hydrogen adsorption peak current on Pd/PPy/foam-Ni electrode was -150.4 mA. Scanning electron microscope (SEM) images show that PPy film modified the electrode surface characteristics. The dechlorination experimental results indicate that 2,4-dichlorophenol removal efficiency of 99.4% and current efficiency of 33.6% on Pd/PPy/foam-Ni electrode could be obtained under the conditions of dechlorination current of 5 mA and dechlorination time of 70 min in aqueous solution. The analysis of HPLC identifies that the final products were mainly phenol. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：133 / 139

页数：7

共 33 条

[1] Electrooxidation of chlorophenols at a glassy carbon electrode in a pH 11 buffer [J].

Berrios, C. ;

Arce, R. ;

Rezende, M. C. ;

Ureta-Zanartu, M. S. ;

Gutierrez, C. .

ELECTROCHIMICA ACTA, 2008, 53 (06) :2768-2775

[2] Electrocatalytic reduction of chlorophenoxy acids at palladium-modified glassy carbon electrodes [J].

Casella, Innocenzo G. ;

Contursi, Michela .

ELECTROCHIMICA ACTA, 2007, 52 (24) :7028-7034

[3] Electrocatalytic hydrogenation of 4-chlorophenol on the glassy carbon electrode modified by composite polypyrrole/palladium film [J].

Chen, G ;

Wang, ZY ;

Yang, T ;

Huang, DD ;

Xia, DG .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (10) :4863-4868

[4] Electrochemically reductive dechlorination of micro amounts of 2,4,6-trichlorophenol in aqueous medium on molybdenum oxide containing supported palladium [J].

Chen, G ;

Wang, ZY ;

Xia, DG .

ELECTROCHIMICA ACTA, 2004, 50 (04) :933-937

[5] Electrochemically codeposited palladium/molybdenum oxide electrode for electrocatalytic reductive dechlorination of 4-chlorophenol [J].

Chen, G ;

Wang, ZY ;

Xia, DG .

ELECTROCHEMISTRY COMMUNICATIONS, 2004, 6 (03) :268-272

[6] Engineering aspects of electrochemical hydrodehalogenation of 2,4-dichlorophenol in a solid polymer electrolyte reactor [J].

Cheng, H ;

Scott, K ;

Christensen, PA .

APPLIED CATALYSIS A-GENERAL, 2004, 261 (01) :1-6

[7] Electrochemical hydrodehalogenation of chlorinated phenols in aqueous solutions - I. Material aspects [J].

Cheng, H ;

Scott, K ;

Christensen, PA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (02) :D17-D24

[8] Electrochemical hydrodehalogenation of chlorinated phenols in aqueous solutions - II. Effect of operating parameters [J].

Cheng, H ;

Scott, K ;

Christensen, PA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (02) :D25-D29

[9] Electrochemical dechlorination of 4-chlorophenol to phenol [J].

Cheng, IF ;

Fernando, Q ;

Korte, N .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (04) :1074-1078

[10]

CHENGHSIN L, 1999, CHEMOSPHERE, V39, P2375

← 1 2 3 4 →