Low-temperature Fabrication of Mn3O4 Nanorods by Solid-State Decomposition of Exfoliated MnO2 Nanosheets / 박리화된 이차원 MnO2 나노판의 고상분해법에 의한 일차원 Mn3O4 나노 막대의 저온합성에 관한 연구
- Resource Type
- Dissertation/ Thesis
- Authors
- 이나라 / Lee, Na-Ra
- Source
- Subject
- MnO2
나노판
고상분해법
Mn3O4
- Language
- English
A novel synthetic route has been developed to prepare manganese oxide nanorods. Using unilamellar manganese dioxide (MnO2) nanosheets as starting materials, we succeeded in obtaining hausmannite manganese oxide (Mn3O4) nanorods at low temperature. The starting materials, exfoliated manganese dioxide nanosheets, were obtained by intercalation and delamination reaction of the protonic manganese dioxide (H0.13MnO2∙0.70H2O) with tetrabutylammonium (TBA) cation. The transformation of layered MnO2 nanosheets to Mn3O4 nanorods was achieved by solid-state decomposition method. It was successfully carried out by simple acidification and heat-treatment process even at about 150˚C. And, the reaction conditions including pH value of acidification and range of heat-treatment temperature are determined through scanning electron microscope image and thermal analysis. The resulting hausmmanite manganese oxide (Mn3O4) nanorods have greatly inceased surface area and it was confirmed by nitrogen adsorption-desorption isotherm. The application of this exfoliation-decomposition strategy for other layered materials would provide a novel soft-chemical route to nanocrystalline with an anisotropic structure.