Photoassisted electrochemical degradation of an azo dye using Ti/RuO₂ anode and carbon nanotubes containing gas-diffusion cathode

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• 作者：Alireza Khataee^a ; ^{a_khataee@tabrizu.ac.ir" class="auth_mail} ; ^{ar_khataee@yahoo.com" class="auth_mail} ; Amaneh Akbarpour^a ; Behrouz Vahid^b
• 关键词：Ti/RuO2 ; Carbon nanotubes ; Electrochemical oxidation ; Decolorization ; Anodic oxidation
• 刊名：Journal of the Taiwan Institute of Chemical Engineers
• 出版年：May, 2014
• 年：2014
• 卷：45
• 期：3
• 页码：930-936
• 全文大小：1602 K

文摘

A photoassisted electrochemical system was utilized for degradation of a di-azo dye under recirculation mode. Experiments were performed with active titanium/ruthenium oxide (Ti/RuO₂) anode and cathode containing carbon nanotubes (CNTs). Transmission electron microscopy image of CNTs revealed that they had an inner and outer diameter of 6 nm and 22 nm, respectively. Degradation efficiency of DB129 by photolysis, electrochemical oxidation and photoassisted electrochemical processes was 29.29, 37.19 and 92.03%, respectively at 90 min of processes. TOC results indicated that 93.36% of organic substrates were mineralized after 360 min of photoassisted electrochemical process and some degradation intermediates were identified by GC-MS.