微凝胶模板法制备具有特殊表面形貌的CdS有机-无机复合微球  

Preparation of CdS Organic-Inorganic Composite Micro-spheres with Special Surface Structures by Using Micro-gel Template Method

作　　者：白超良[1] 王斌科[1] 梁颖亮[1] 李晔[1] 

机构地区：[1]空军工程大学理学院,陕西西安710051

出　　处：《空军工程大学学报（自然科学版）》2009年第3期91-94,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10474077)

摘　　要：采用反相悬浮聚合法合成了包埋有Cd2+的中性聚(N-异丙基丙烯酰胺)(PNIPAM)微凝胶和阴离子型聚(N-异丙基丙烯酰胺-co-甲基丙烯酸)(P(NIPAM-co-MAA))微凝胶。以这2种微凝胶为微反应器,通过外源导入法通入H2S气体,引发CdS沉积反应,制得具有不同表面形貌的有机-无机复合微球。扫描电镜观察表明:微球表面图案结构形貌与模板的性质有关,微球的尺寸在50μm左右,且具有类核-壳结构。X射线衍射分析表明复合微球中的CdS呈晶态,属立方晶形。微球具有CdS荧光特征,模板本性对微球荧光有一定影响。Nonionic poly - N - isopropylacrylamide （PNIPAM） and anionic poly （ N - isopropyl - aerylamide - co - methaerylic acid） （P（ NIPAM- co -MAA）） microgels containing Cd2＋ are prepared by employing inverse suspension polymerization method. PNIPAM/CdS and P （NIPAM - co - MAA）/CdS composite micro - spheres with patterned surface structures are prepared by using micro - gels as micro - reactors and templates and inputting H2S gas slowly to confine and direct the precipitation of CdSI The surface morphologies of the composite micro - spheres depend upon the composition of the templates. SEM measurements indicated that the micro - spheres prepared are about 50 μm and occupy pursued core - shell structures. XRD indicated CdS precipitated within/on the template is in a crystalline state, and belongs to cubic crystalline system. Fluorescence measurements indicate that the emission of the micro - spheres is characterized by CdS, and the emission is slightly affected by the composition of the template employed.

关 键 词：微凝胶 模板 有机-无机复合材料 硫化镉 聚(N-异丙基丙烯酰胺) 

分 类 号：TQ423.9[化学工程]