Comparison of Pyridazinium Electro-oxidation on Boron-doped Diamond (BDD) and SnO2 in a Basic Medium

被引：4
作者：
Bouya, H. [1 ]
Errami, M. [1 ]
Salghi, R. [1 ]
Jodeh, S. [2 ]
Messali, M. [3 ]
Hammouti, B. [4 ]
机构：
[1] Univ Ibn Zohr, ENSA, Equipe Genie Environm & Biotechnol, BP 1136, Agadir, Morocco
[2] An Najah Natl Univ, Dept Chem, Nablus, Palestine
[3] Taibah Univ, Fac Sci, Chem Dept, Al Madinah Al Mounawwara 30002, Saudi Arabia
[4] Univ Mohammed 1, Fac Sci, LCAE URAC18, Oujda, Morocco
来源：
PORTUGALIAE ELECTROCHIMICA ACTA | 2015年 / 33卷 / 01期
关键词：
electro-oxidation; boron-doped diamond; SnO2; pyridazinium;
D O I：
10.4152/pea.201501013
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The eco-friendly ionic liquid 1-(2-ethoxy-2-oxoethyl) pyridazinium chloride's (EOPC) newly synthesised electro-oxidation behaviors of boron-doped diamond (BDD) and SnO2 in an alkaline media were compared using galvanostatic electrolysis. Various pyridazinium and alkaline concentrations were studied. In addition, the temperature, and density current effect of pyridazinium oxidation were investigated. The BDD showed a higher activity toward pyridazinium oxidation than the SnO2. This is mainly due to the higher characteristics and the relatively inert nature of the BDD. The bulk electrolysis tests have shown that the complete removal of COD can only be achieved using a boron-doped diamond and that SnO2 only permits a partial oxidation of pyridazinium. On the basis of the chemical oxygen demand (COD) evolution released during the treatment, a total mineralization has been proposed. Finally, electrolysis has been performed in the presence of NaCl. Based on these results, it is concluded that BDD has less poisoning effects and higher activity than SnO2 for the selective electro-oxidation of pyridazinium.
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页码：13 / 21
页数：9
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