Abstract
We first synthesized nanosized mesoporous R-MnO 2 using different block copolymers and PEG by direct hydrothermal synthesis method. The block copolymers seemed to play the important role. At appropriate synthesis conditions, the mesoporous R-MnO 2 with high surface area, narrow pore size distributions and ordered structure with uniform mesopores could be obtained. The mesoporous R-MnO 2 had nanoarrays with uniform mesopores (intercrystalline voids). Because the residual copolymer in the product could be easily removed by washing after synthesis, the calcination procedure of the final mesoporous R-MnO 2 obtained was not necessary, suggesting that this method is economical and environmental. This direct hydrothermal synthesis method can potentially develop a new method for preparing other metal oxide. We think that the mesoporous R-MnO 2 formed through a mechanism that combines PEO moieties in block polymers self-assembly with complication of Mn species. The mesoporous R-MnO 2 had high thermal stability.
Original language | English |
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Pages (from-to) | 3619-3624 |
Number of pages | 6 |
Journal | Materials Research Bulletin |
Volume | 47 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 1 2012 |
Externally published | Yes |
Keywords
- A. Inorganic compounds
- A. Oxides
- B. Chemical synthesis
- C. X-ray diffraction
- D. Surface properties
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering