磁性微胶囊负载铜配合物的制备及其对染料的催化降解性能

Preparation of copper complex loaded magnetic microcapsules and the degradation property for dyes

通过化学乳化交联法制备出球状的负载铜配合物C_(18)H_(16)N_2O_4CuCl_2·H_2O(CuL)的磁性微胶囊,采用光学显微镜、扫描电镜、透射电镜表征微胶囊的结构;采用电感耦合等离子发射光谱仪检测了微胶囊中铜配合物的负载量;通过紫外可见光谱扫描检测磁性微胶囊对过氧化氢降解活性染料KN-R的催化活性;通过缓释实验来检测铜配合物在微胶囊中的负载稳定性。研究表明,负载铜配合物的磁性微胶囊对活性染料KN-R具有较高的催化降解活性,且催化降解循环次数可以达到5次以上。

Magnetic microcapsules encapsulated C（18）H（16）N2O4CuCl2·H2O（CuL） were prepared via emulsion-chemical crosslink method. The structure of the microcapsules were characterized by optical microscopy（ OM）,scanning electron microscopy（ SEM） and transmission electron microscopy（ TEM）,respectively. The contents of CuL in the microcapsule was determined by the inductively coupled plasma atomic emission spectroscopy（ ICP）. The catalytic property of the microcapsules were tested by UV-Vis spectrophotometer（ UV-Vis）. The CuL loaded microcapsules exhibited an excellent catalytic property in the oxidant degradation of KN-R. The chemical stability of copper complex in the microcapsules was measured by immersing microcapsules with blank solvent. The results showed that the encapsulated CuL exhibited a high catalytic activity and could be reused at least 5 times in catalyzing the oxidation of KN-R with hydrogen peroxide.