电极/溶液界面pH值的现场测量  

In situ Measurement of pH Value on the Cathode/Solution Interface

作　　者：张建民[1] 杨长春[1] 石秋芝[1] 吴强[1] 程鹏里[1] 

机构地区：[1]郑州大学化学系,郑州450052

出　　处：《高等学校化学学报》2001年第11期1901-1903,共3页Chemical Journal of Chinese Universities

基　　金：河南省杰出青年基金 (批准号 :980 30 2 )资助

摘　　要：In this paper, a pH microprobe technique was developed to measure in situ the pH value on the cathode/solution interface, and iridium oxide was used as a pH sensitive material which is of a good response behavior in the measured solutions. During electrodeposition process of bioceramic coatings of calcium phosphates, the interfacial pH change, for example, was first measured. The experimental results indicated that the pH value on the cathode/solution interface first jumped to a maximum, then slowly decreased with the increase of the electrodeposition time. The interfacial pH value was increased with the applied current density or cathode overpotential.In this paper, a pH microprobe technique was developed to measure in situ the pH value on the cathode/solution interface, and iridium oxide was used as a pH sensitive material which is of a good response behavior in the measured solutions. During electrodeposition process of bioceramic coatings of calcium phosphates, the interfacial pH change, for example, was first measured. The experimental results indicated that the pH value on the cathode/solution interface first jumped to a maximum, then slowly decreased with the increase of the electrodeposition time. The interfacial pH value was increased with the applied current density or cathode overpotential.

关 键 词：现场测量 pH微探讨 电极/溶液界面 PH值 磷酸钙生物陶瓷 电沉积 

分 类 号：O657.92[理学—分析化学] O646.5[理学—化学]