Journal
NANOTECHNOLOGY
Volume 17, Issue 4, Pages 947-951Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/17/4/018
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Single-crystalline dandelion-like beta-MnO2 three-dimensional microstructures have been successfully prepared for the first time via a simple hydrothermal process based on the direct reaction between Mn(NO3)(2) and H2O2. H2O2 plays an important role in the formation of the dandelion-like morphology. The formation mechanism of the dandelion-like nanostructures was investigated and discussed based on the experimental results. Magnetic measurements show that the Neel temperature of the as-obtained product is 100 K, which is about 6 K higher than that of the corresponding bulk beta-MnO2 crystals.
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