Preparation of Manganese Oxide Hollow Spheres Using pH-responsive Microgels as Templates  

基于pH响应型微凝胶模板的二氧化锰空心球制备

作　　者：张伟[1] 张志成[1] 

机构地区：[1]中国科学技术大学高分子材料与工程系,合肥230026

出　　处：《Chinese Journal of Chemical Physics》2009年第3期327-332,340,共7页化学物理学报（英文）

摘　　要：Manganese oxide hollow spheres were prepared by a novel and facile approach using pH- responsive microgels as templates. The final products were thoroughly characterized with X-ray powder diffraction, thermogravimetric analysis, scanning electron microscopy, Fourier transform infrared, and transmission electron microscopy. The results reveal that the shell thickness of manganese oxide hollow spheres increased with the dosage of KMnO4, which implies that a controllable and feasible strategy for manganese oxide hollow spheres prepa- ration has been established. Further studies on the microgels template showed some of them had an irreversible swelling/deswelling transition due to the uneven cross-link extent. Based on the results, a probable formation mechanism for the hollow spheres was proposed.

关 键 词：pH-responsive microgel Templates based strategy Manganese oxide hollowsphere 

分 类 号：O657.1[理学—分析化学] TQ137.12[理学—化学]