以花粉为生物模板制备磷酸铁中空微球的研究  

A study on the preparation of iron phosphate hollow microspheres by using pollen grain as a biotemplate

作　　者：曹丰 孙起 吴正颖 

机构地区：[1]江苏省环境功能材料重点实验室,江苏苏州215009

出　　处：《苏州科技学院学报（工程技术版）》2012年第1期8-12,共5页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金：国家自然科学基金资助项目(21103119);江苏省高校自然科学研究面上项目(11KJB430012)

摘　　要：在研究花粉对溶液中离子吸附的基础上,以油菜花粉为模板制备了磷酸铁中空微球,并对微球形成过程进行了分析。结果表明,油菜花粉能够显著吸收溶液中的Fe3+并将其结合于原生质颗粒表面。被吸收的Fe3+可以在花粉内部与阴离子(如PO43-)发生反应,当产物为沉淀时将沉积于原生质颗粒表面形成包裹层,热处理去除花粉后可获得具有中空结构的微球。由于上述反应发生于花粉内部,因此所获得微球不具备花粉壁的结构,其形貌由反应中生成的小颗粒堆积情况决定。该研究表明,利用花粉对离子的吸收行为,以及离子在花粉内部反应生成材料的过程,将有望实现具有异质多层结构的中空微球材料的制备。Based on the study of the ion adsorptions of pollen in the solution,the iron phosphate hollow microspheres were prepared by using the rape pollen as the biotemplates,the formation of the microspheres was analyzed.Results indicate that the rape pollen could adsorb the Fe3＋ in solution and transfer them into the surface of protoplasm.The adsorbed Fe3＋ could react with anions（such as PO43-） inside the pollen and form the shell when deposits are on the surface of protoplasm particles.After calcinations,hollow morphologies were obtained.Particle compactness,rather than the pollen wall,determines the microsphere morphologies as this formation happens inside the pollen.By this ionic adsorption technique,heterogeneous and multi-layered hollow microspheres would promisingly be prepared.

关 键 词：生物模板 中空微球 花粉 磷酸铁 

分 类 号：TQ174[化学工程—陶瓷工业]