Electro-Catalytic Degradation of Phenol Organics with SnO2-Sb2O3/Ti Electrodes

✍ Scribed by Kaijin Zhu; Wencai Zhang; Huifang Wang; Zhongliang Xiao

• Book ID: 102805006
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 1011 KB
• Volume: 36
• Category: Article
• ISSN: 1863-0650
• DOI: 10.1002/clen.200700037

✦ Synopsis

The effect of extraordinary degradation of phenol organics on the SnO 2 -Sb 2 O 3 /Ti electrode is investigated through experimental research and theoretical analysis. The phenol organics contained 4-chloro-phenol, 4-bromo-phenol, and 2-iodo-phenol. At a current density of 4 mA cm -2 and an electrolysis time of 12 h, the degradation efficiency of the phenols was over 98% with a relatively short degradation time, whereas the degradation time of the PbO 2 /Ti electrode surpassed 40 h while delivering 100% disposal efficiency. Therefore, the effectiveness of electrochemical (EC) oxidation by the SnO 2 -Sb 2 O 3 /Ti was superior to that of the PbO 2 /Ti electrode. At the same time, the SnO 2 -Sb 2 O 3 /Ti had higher oxygen generation potential and lower electron consumption than the other electrodes. This was mainly due to the effect of the middle Sb 2 O 3 layer, which due to its high porosity and good catalytic effect, contributed to a better catalysis than the SnO 2 part.