Simultaneous determination of chlorine and oxygen evolving at RuO2/Ti and RuO2-TiO2/Ti anodes by differential electrochemical mass spectroscopy

被引:76
作者
Arikawa, T [1 ]
Murakami, Y [1 ]
Takasu, Y [1 ]
机构
[1] Shinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 386, Japan
关键词
ruthenium oxide; titanium oxide; chlorine; oxygen; DEMS; porous electrode;
D O I
10.1023/A:1003269228566
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Chlorine and oxygen evolving at RuO2/Ti and RuO2-TiO2/Ti anodes have been simultaneously determined at electrode potentials from 1.0 to about 2 V (vs Ag/AgCl) by differential electrochemical mass spectroscopy (DEMS). On the RuO2/Ti anodes, the threshold electrode potential for oxygen evolution increased with a decrease in RuO2 loading, while the chlorine evolution potential was unchanged. Low RuO2 loading anodes gave a high chlorine evolution ratio under various constant electrolysis potentials. On the RuO2-TiO2/Ti anodes, the threshold electrode potential for oxygen evolution increased with an increase in the TiO2 content more remarkably than that for chlorine evolution. High TiO2 content anodes gave a high chlorine evolution ratio at various constant electrolysis potentials. The combination of RuO2 and TiO2 exhibits a remarkable effect with respect to the enhancement of chlorine evolution selectivity.
引用
收藏
页码:511 / 516
页数:6
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