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Electro‐Catalytic Degradation of Phenol Organics with SnO 2 ‐Sb 2 O 3 /Ti Electrodes
Author(s) -
Zhu Kaijin,
Zhang Wencai,
Wang Huifang,
Xiao Zhongliang
Publication year - 2008
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.200700037
Subject(s) - phenol , electrolysis , degradation (telecommunications) , catalysis , electrode , electrochemistry , chemistry , inorganic chemistry , materials science , chemical engineering , nuclear chemistry , organic chemistry , electrolyte , telecommunications , computer science , engineering
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.
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