钒化合物在碳糊电极上的循环伏安行为  

Electrochemical Behavior of Vanadium Compounds at Carbon Paste Electrode(CPE)

作　　者：刘洋[1] 刘洪涛[1] 夏熙[1] 

机构地区：[1]新疆大学应用化学研究所,乌鲁木齐830046

出　　处：《应用化学》2001年第12期987-990,共4页Chinese Journal of Applied Chemistry

摘　　要：用循环伏安法研究了 V2 O3 及五价钒化合物 ( V2 O5、NH4VO3 )在 H2 SO4电解液中 ,在碳糊电极 ( CPE)电极上的行为 ,发现在不同浓度下 ,三价钒化合物只有 2个还原峰 ,却有 3个氧化峰 ;而两种不同的五价钒化合物均有 4对氧化还原峰 ,且峰位基本相近 ,略有偏移 .据此解析了对应氧化还原峰的反应 ,并对它们的反应机理进行了初步探讨 .The electrochemical behavior of V 2O 3, V 2O 5 and NH 4VO 3 at carbon paste electrode(CPE) in H 2SO 4 solution were investigated by cyclic voltammetry. The results showed that for vanadium(Ⅲ) compound there appeared two reduction peaks but three oxidation peaks in cyclic voltammograms in different H 2SO 4 concentration solutions, while for two vanadium(Ⅴ) compounds there were four reduction peaks and four oxidation peaks, quite close to each other. The corresponding redox peaks were reasonably analyzed and the reaction mechanism has been discussed briefly.

关 键 词：碳糊电极 循环伏安法 氧化还原反应 反应机理 钒化合物 电极反应 

分 类 号：O614.511[理学—无机化学] O646.5[理学—化学]