Enhanced electrochemical oxidation of organic pollutants by boron-doped diamond based on porous titanium

被引：43

作者：

He, Yapeng ^{[1
]}

Huang, Weimin ^{[1
]}

Chen, Rongling ^{[1
]}

Zhang, Wenli ^{[1
]}

Lin, Haibo ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2015年 / 149卷

基金：

中国国家自然科学基金;

关键词：

Boron-doped diamond; Porous titanium; Electrochemical oxidation; Hydroxyl radical; Wastewater treatment; WASTE-WATER; DOPING LEVEL; DEGRADATION; ELECTRODES; EFFICIENT; SURFACE; CONVERSION/COMBUSTION; ELECTROOXIDATION; TECHNOLOGIES; FABRICATION;

D O I：

10.1016/j.seppur.2015.05.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The main aim of the present study was to explore the potential of boron-doped diamond (BDD) film electrode on porous titanium (Ti) substrate to promote the electrochemical oxidation of organic pollutants. Porous Ti endowed the Ti/BDD film three-dimensional porous structure. The electrochemical effective surface area for porous Ti/BDD anode was 837 cm(2)/cm(2), 3.2 times as much as that of two-dimensional flat Ti/BDD electrode. Furthermore, the generation ability and rate of hydroxyl radical ((OH)-O-center dot) on porous BDD electrode were enhanced due to the porous structure of BDD film. The step currents on porous Ti/BDD were about 2 times of those on flat Ti/BDD electrode from chronoamperometry curves, porous Ti/BDD exhibited superior indirect electrochemical oxidation ability. The results of electrodegradation of several typical organic pollutants (oxalic acid, phenol, sodium dodecylbenzene sulfonate, xylenol orange) revealed that current efficiencies on porous Ti/BDD electrode were about 30% higher compared with flat BDD electrode, corroborating the enhanced of electrochemical oxidation as the introduction of porous Ti substrate. Moreover, the discrepancy between promotion of COD removal rate and enhancement of (OH)-O-center dot was discussed. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：124 / 131

页数：8

共 44 条

[1] Application of biosorption for the removal of organic pollutants: A review [J].

Aksu, Z .

PROCESS BIOCHEMISTRY, 2005, 40 (3-4) :997-1026

[2]

[Anonymous], 1980, Electrochemical methods: fundamentals and applications

[3]

[Anonymous], J APPL ELECTROCHEM

[4]

[Anonymous], CHEM VAP DEPOSITION

[5] Influence of the boron doping level on the electrochemical oxidation of the azo dyes at Si/BDD thin film electrodes [J].

Bogdanowicz, R. ;

Fabianska, A. ;

Golunski, L. ;

Sobaszek, M. ;

Gnyba, M. ;

Ryl, J. ;

Darowicki, K. ;

Ossowski, T. ;

Janssens, S. D. ;

Haenen, K. ;

Siedlecka, E. M. .

[6] From micro to nanocrystalline diamond grown on 3D porous titanium matrix [J].

Braga, N. A. ;

Baldan, M. R. ;

Ferreira, N. G. .

JOURNAL OF MATERIALS SCIENCE, 2012, 47 (01) :23-40

[7] Electro-Fenton Process and Related Electrochemical Technologies Based on Fenton's Reaction Chemistry [J].

Brillas, Enric ;

Sires, Ignasi ;

Oturan, Mehmet A. .

CHEMICAL REVIEWS, 2009, 109 (12) :6570-6631

[8] Electrochemical technologies in wastewater treatment [J].

Chen, GH .

SEPARATION AND PURIFICATION TECHNOLOGY, 2004, 38 (01) :11-41

[9] High-performance Ti/BDD electrodes for pollutant oxidation [J].

Chen, XM ;

Chen, GH ;

Gao, FR ;

Yue, PL .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2003, 37 (21) :5021-5026

[10] ELECTROCATALYSIS IN THE ELECTROCHEMICAL CONVERSION/COMBUSTION OF ORGANIC POLLUTANTS FOR WASTE-WATER TREATMENT [J].

COMNINELLIS, C .

ELECTROCHIMICA ACTA, 1994, 39 (11-12) :1857-1862

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