铁氰化钴薄膜电极去除溶液中Sr^(2+)的初步研究  

Research on removal of Sr^(2+) from solution with cobalt hexacyanoferrate thin film electrode

作　　者：侯建荣[1] 李永国[1] 俞杰[1] 张渊[1] 鞠健[2] 

机构地区：[1]中国辐射防护研究院环境工程技术研究所,山西太原030006 [2]太原理工大学化工学院,山西太原030024

出　　处：《电源技术》2014年第9期1698-1701,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(20676089)

摘　　要：电沉积方法制得CoHCF(cobalt hexacyanoferrate)薄膜,考察了薄膜电极对离子的电控离子分离性能。通过循环伏安法、计时库仑法(CA)以及电化学石英晶体微天平(EQCM)分析了溶液中CoHCF薄膜电极的离子置入机制、电活性、电化学行为以及对Sr2+离子的选择性。通过XPS测定了氧化还原状态下CoHCF薄膜组成与元素价态。结果表明,CoHCF薄膜在Sr2+溶液中具有可逆的离子交换行为,对Sr2+离子的选择性大于Mg2+离子,通过电控离子分离方法可以实现Sr2+的有效分离。CoHCF films were synthesized by electrochemistry deposition and the film-electrode systems were investigated as electrochemically controlled ion separation （EClS） materials for the selective separation of ions in solutions. Cyclic voltammetry （CV）, choronoamperometry and electrochemical quartz crystal microbalance （EQCM） were used to investigate the loading mechanism, electroactivity, electrochemical behavior and Sr2＋selectivity. The chemical composition and elemental valence of CoHCF films in reduced and oxidized form were also characterized by X-ray photoelectron spectroscopy （XPS）. Experimental results show that CoHCF films have reversible electrochemical behavior and display a high Sr2＋ selectivity in Mg2＋/Sr2＋ mixtures.St2＋ can be separated effectively by CoHCF films in ECIS processes.

关 键 词：电沉积 CoHCF薄膜 电控离子分离 选择性 

分 类 号：TM910.3[电气工程—电力电子与电力传动]