Boron doped diamond electrodes for nitrate elimination in concentrated wastewater

被引：74
作者：
Lévy-Clément, C
Ndao, NA
Katty, A
Bernard, M
Deneuville, A
Comninellis, C
Fujishima, A
机构：
[1] CNRS, LCMTR, F-94320 Thiais, France
[2] CNRS, LEPES, F-38042 Grenoble 9, France
[3] EPFL, Inst Genie Chim, CH-1015 Lausanne, Switzerland
[4] Univ Tokyo, Sch Engn, Dept Appl Chem, Tokyo 1138656, Japan
来源：
DIAMOND AND RELATED MATERIALS | 2003年 / 12卷 / 3-7期
关键词：
diamond films; boron doping; electrochemical reduction of nitrates; plasma CVD and hot filament CVD;
D O I：
10.1016/S0925-9635(02)00368-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrochemical and physical properties of polycrystalline boron doped diamond electrodes with a metallic conduction grown by MPCVD and HFCVD were investigated with the goal to use them as cathodes, for the electrochemical reduction of nitrate ions dissolved in neutral solutions. All electrodes contain a mean boron concentration [B] > 3 X 10(20) cm(-3) and show a significant reduction of nitrate. However, the higher efficiency is obtained for the electrode having the highest [B] (1.5 x 10(21) cm(-3)) and the lowest concentration of parasitic phases. The analysis of the Raman spectrum proved to be a valuable tool to probe these characteristics. Quantitative analysis of the solutions showed that the relative concentrations of the nitrogenous species formed during the reduction of nitrates at - 2 V do not depend on the boron doping level. (C) 2003 Elsevier Science B.V. All rights reserved.
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页码：606 / 612
页数：7
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