A study on performance improvement of Ir oxide-coated titanium electrode for organic destruction

被引:65
作者
Kim, KW [1 ]
Lee, EH
Kim, JS
Shin, KH
Jung, BI
机构
[1] Korea Atom Energy Res Inst, Taejon 305600, South Korea
[2] TECHWIN Co Ltd, Chonju 360721, Chungbuk, South Korea
关键词
catalytic oxide electrode; DSA; organic oxidation; RuO2; IrO2;
D O I
10.1016/S0013-4686(02)00129-9
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The performance improvement of IrO2 electrode for the oxidative destruction of organics through evaluations of the electrode in terms of material, electrochemical, and destruction organic properties has been carried out by using TGA, XPS, AES, and TOC measurement of 4CP organic destruction at the electrode. A sintering temperature of around 650 degreesC rather than 400-550 degreesC suggested in the literature for the Ir oxide electrode enhanced the organic destruction yield because the electrode surface was sufficiently converted to IrO2 from the IrCl3 of the precursor solution. An additional oxide layer between the IrO2 layer and the Ti substrate, to prevent a solid diffusion of TiO2 due to oxidation of the Ti substrate during high-temperature sintering, further improved the organic destruction so that the 4CP destruction yield raised to about four times higher than that by the conventional Ir oxide electrode. The destruction yield of 4CP solution with chloride ion at the improved electrode increased as much as that by an RuO2 electrode sintered at 430 degreesC in the same solution. The improved Ir oxide electrode had a long lifetime and good production of active chloride compounds. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2525 / 2531
页数:7
相关论文
共 27 条
[1]   Surface characterisation of IrO2/TiO2/CeO2 oxide electrodes and Faradaic impedance investigation of the oxygen evolution reaction from alkaline solution [J].
Alves, VA ;
da Silva, LA ;
Boodts, JFC .
ELECTROCHIMICA ACTA, 1998, 44 (8-9) :1525-1534
[2]   EFFECT OF PREPARATION ON THE SURFACE AND ELECTROCATALYTIC PROPERTIES OF RUO2 + IRO2 MIXED-OXIDE ELECTRODES [J].
ANGELINETTA, C ;
TRASATTI, S ;
ATANASOSKA, LD ;
MINEVSKI, ZS ;
ATANASOSKI, RT .
MATERIALS CHEMISTRY AND PHYSICS, 1989, 22 (1-2) :231-247
[3]   EFFECT OF COMPOSITION ON THE ELECTROCATALYTIC ACTIVITY OF THE TERNARY OXIDE RU0.3TI(0.7-X)SNXO2 .1. OXYGEN EVOLUTION FROM HCLO4 SOLUTIONS [J].
BOODTS, JFC ;
TRASATTI, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (12) :3784-3789
[4]  
COMNINELLIS C, 1995, J APPL ELECTROCHEM, V25, P23
[5]   CHARACTERIZATION OF DSA-TYPE OXYGEN EVOLVING ELECTRODES - CHOICE OF A COATING [J].
COMNINELLIS, C ;
VERCESI, GP .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 1991, 21 (04) :335-345
[6]   ELECTROCATALYSIS IN THE ELECTROCHEMICAL CONVERSION/COMBUSTION OF ORGANIC POLLUTANTS FOR WASTE-WATER TREATMENT [J].
COMNINELLIS, C .
ELECTROCHIMICA ACTA, 1994, 39 (11-12) :1857-1862
[7]  
Da Silva L.A., 1997, CAN J CHEM, V75, P1483, DOI DOI 10.1139/V97-178
[8]   INFLUENCE OF THE VALVE METAL-OXIDE ON THE PROPERTIES OF RUTHENIUM BASED MIXED-OXIDE ELECTRODES .2. RUO2/TIO2 COATINGS [J].
DEBATTISTI, A ;
LODI, G ;
CAPPADONIA, M ;
BATTAGLIN, G ;
KOTZ, R .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1989, 136 (09) :2596-2598
[9]  
FREEMAN HM, 1990, PHYSCIAL CHEM PROCES, V2, P165
[10]   Study on the electro-activity and non-stochiometry of a Ru-based mixed oxide electrode [J].
Kim, KW ;
Lee, EH ;
Kim, JS ;
Shin, KH ;
Kim, KH .
ELECTROCHIMICA ACTA, 2001, 46 (06) :915-921