Electrochemical oxidation of reactive brilliant orange X-GN dye on boron-doped diamond anode

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, suc...

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Bibliographic Details
Published in:Journal of Central South University 2018-08, Vol.25 (8), p.1825-1835
Main Authors: Ma, Li, Zhang, Ming-quan, Zhu, Cheng-wu, Mei, Rui-qiong, Wei, Qiu-ping, Zhou, Bo, Yu, Zhi-ming
Format: Article
Language:English
Subjects:
Anodes
Anodizing
Boron
Chemical vapor deposition
Current density
Degradation
Diamonds
Dyes
Electrochemical oxidation
Electrolysis
Electrolytes
Engineering
Film thickness
Metallic Materials
Niobium
Organic carbon
Organic chemistry
Oxidation
Process parameters
Scanning electron microscopy
Spectrophotometry
Substrates
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Summary: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/cm 2 , supporting electrolyte concentration of 0.05 mol/L, initial solution pH 3.08, and solution temperature of 60 °C.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-018-3872-y