Journal
NANOSCALE
Volume 2, Issue 10, Pages 2195-2198Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0nr00257g
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Funding
- National Natural Science Foundation of China [20925621]
- Program of Shanghai Subject Chief Scientist [08XD1401500]
- Shanghai Shuguang Scholars Tracking Program [08GG09]
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Uniform and single-crystalline Mn3O4 nano-octahedrons have been successfully synthesized by a simple ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) assisted hydrothermal route. The octahedron structures exhibit a high geometric symmetry with smooth surfaces and the mean side length of square base of octahedrons is similar to 160 nm. The structure is reckoned to provide superior functional properties and the nano-size achieved in the present work is noted to further facilitate the material property enhancement. The formation process was proposed to begin with a dissolution-recrystallization'' which is followed by an Ostwald ripening'' mechanism. The Mn3O4 nanooctahedrons exhibited an enhanced specific capacitance of 322 F g(-1) compared with the truncated octahedrons with specific capacitances of 244 F g(-1), making them a promising electrode material for supercapacitors.
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