Preparation of Manganese Oxide Hollow Spheres Using pH-responsive Microgels as Templates |
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| Authors: | Wei Zhang and Zhi-cheng Zhang |
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| Institution: | CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering,University of Science and Technology of China, Hefei 230026, China;CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering,University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | 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. |
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| Keywords: | pH-responsive microgel Templates based strategy Manganese oxide hollow sphere |
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