Top-down synthesis of sponge-like Mn3O4 at low temperature
| Autor: | Gaorong Han, Gaoling Zhao, Jing Zhou, Lu Wangwei, Weixia Dong, Kay He, Bin Song |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Scanning electron microscope General Chemical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry Manganese 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Tetragonal crystal system chemistry.chemical_compound Adsorption chemistry Nanocrystal Chemical engineering Transmission electron microscopy Formate 0210 nano-technology Hausmannite |
| Zdroj: | RSC Advances. 9:22772-22778 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c9ra03893k |
| Popis: | A top-down synthetic method was developed for the fabrication of sponge-like Mn3O4 composed of Mn3O4 nanocrystals by decomposition of manganese formate at 200 °C. The samples were characterized in terms of their structural and morphological properties by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer–Emmett–Teller (BET) studies. TEM and SEM images showed that the morphology of sponge-like Mn3O4 structures was mostly retained from the morphology of the manganese formate precursor, which was controlled by the solvothermal process. Large sponge-like Mn3O4 structures exhibiting crystallographic symmetry were prepared under solvothermal treatment for a long time. The XRD pattern showed that the Mn3O4 exhibit a tetragonal hausmannite structure. The results of N2 adsorption analysis indicated that the sponge-like Mn3O4 nanostructures possess high surface area. The possible formation mechanism of Mn3O4 nanostructures has been discussed. |
| Databáze: | OpenAIRE |
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