北京科技大学学报2011，Vol.33Issue(2)：200-204,5.
热处理条件对IrO2-pH电极性能的影响
Effect of heat treatment conditions on IrO2-pH electrode properties
摘要
Abstract
Micro lrO2-pH electrodes were prepared under three heat treatment conditions: 700 ℃ furnace cooling, 870℃ air cooling and 870 ℃ furnace cooling. Their linear response range and response time were compared. The results indicate that heat treatment conditions have significant effect on the uniformity of iridium oxide films and the open potential stability and response time of the electrodes. After both 700℃ furnace cooling and 870℃ air cooling, the oxide films have rough surfaces, non-uniform porosities and crevices; whereas after 870 ℃ furnace cooling, the oxide films appear with improved characteristics, such as a more uniformity, a shorter response time and a better linearity of open potential. It is concluded that during iridium oxidation, iridium is oxidized by 02 in air with high temperature Li2CO3 as a solvent. The H + response is caused by the reaction of hydrous iridium oxide on the electrode and H + ions in the solution, resulting in the transition of Ir4 + and Ir3 + .关键词
铱化合物/氧化物膜/pH计/电极/热处理Key words
iridium compounds/ oxide films/ pH meters/ electrodes/ heat treatment分类
化学化工引用本文复制引用
陈旭,何川,杜翠薇,李晓刚,吴明..热处理条件对IrO2-pH电极性能的影响[J].北京科技大学学报,2011,33(2):200-204,5.基金项目
国家自然科学基金资助项目(No.50771053) （No.50771053）
