自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 8    August 2018

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Electrochemical oxidation of reactive brilliant orange X-GN dye on boron-doped diamond anode
MA Li(马莉)1, ZHANG Ming-quan(张明全)1, ZHU Cheng-wu(朱成武)1, MEI Rui-qiong(梅瑞琼)1,WEI Qiu-ping(魏秋平)1, ZHOU Bo(周博)2, YU Zhi-ming(余志明)1

1. State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering,Central South University, Changsha 410083, China;
2. School of Engineering and Materials Science, Queen Mary, University of London, United Kingdom

Abstract:In this study, the electrochemical oxidation of reactive brilliant orange X-GN dye with a boron-doped diamond (BDD) anode was investigated. The BDD electrodes were deposited on the niobium (Nb) substrates by the hot filament chemical vapor deposition method. The effects of processing parameters, such as film thickness, current density, supporting electrolyte concentration, initial solution pH, solution temperature, and initial dye concentration, were evaluated following the variation in the degradation efficiency. The microstructure and the electrochemical property of BDD were characterized by scanning electron microscopy, Raman spectroscopy, and electrochemical workstation; and the degradation of X-GN was estimated using UV-Vis spectrophotometry. Further, the results indicated that the film thickness of BDD had a significant impact on the electrolysis of X-GN. After 3 h of treatment, 100% color and 63.2% total organic carbon removal was achieved under optimized experimental conditions: current density of 100 mA/cm2, supporting electrolyte concentration of 0.05 mol/L, initial solution pH 3.08, and solution temperature of 60 °C.

 

Key words: reactive brilliant orange X-GN; boron-doped diamond; film thickness; electrochemical oxidation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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