Preparation of IrO2-Ta2O5|Ti electrodes by immersion, painting and electrophoretic deposition for the electrochemical removal of hydrocarbons from water

JOURNAL OF HAZARDOUS MATERIALS

卷:319

Article

Alheli Herrada, Rosa^1,2  Medel, Alejandro^1,2  Manriquez, Federico¹  Sires, Ignasi²  Bustos, Erika¹ 

[1] Ctr Invest & Desarrollo Tecnol Electroquim, SC Parque Tecnol Queretaro, Pedro Escobedo 76703, Queretaro, Mexico

[2] Univ Barcelona, Fac Quim, Dept Quim Fis, Lab Electroquim Mat & Medi Ambient, Marti & Franques 1-11, E-08028 Barcelona, Spain

关键词: Dimensionally stable anode;    Electro-oxidation;    Hydrocarbon;    Hydroxyl radical;    Water treatment;   

DOI  :  10.1016/j.jhazmat.2016.02.076

来源: Elsevier

【 摘 要 】

After intense years of great development, the electrochemical technologies have become very suitable alternatives in niche markets like industrial wastewater reclamation and soil remediation. A key role to achieve a high efficiency in such treatments is played by the characteristics of the coating of the electrodes employed. This paper compares three techniques, namely immersion, painting and electrophoresis, for the preparation of IrO2-Ta2O5 vertical bar Ti, so-called dimensionally stable anodes (DSA (R)). The quality of the coatings has been investigated by means of surface and electrochemical analysis. Their ability to generate hydroxyl radicals and degrade aqueous solutions of hydrocarbons like phenanthrene, naphthalene and fluoranthene has been thoroughly assessed. Among the synthesis techniques, electrophoretic deposition yielded the best results, with DSA (R) electrodes exhibiting a homogeneous surface coverage that led to a good distribution of active sites, thus producing hydroxyl radicals that were able to accelerate the degradation of hydrocarbons. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free