Journal
MATERIALS LETTERS
Volume 64, Issue 22, Pages 2538-2540Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2010.08.003
Keywords
Hexamethylenetetramine; Hydrothermal; Crystal growth; Nanomaterials
Funding
- Department of Science and Technology, NSTI Phase-IV, Government of India
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A simple, inexpensive, low temperature and environmentally benign hydrothermal reduction route has been developed for the synthesis of octahedral Mn3O4 nanoparticles by using KMnO4 and hexamethylenetetramine (HMT) It has been found that, Mn3O4 formation during hydrothermal process Involves two steps In the first step, an intermediate MnOOH is formed under the influence of self generated pressure in the autoclave In the second step, formic acid produced via hydrolysis followed by oxidation of HMT, reduces MnOOH to Mn3O4 The powder X-ray diffraction (XRD) data confirms the formation of tetragonal gamma-Mn3O4 Scanning electron micrograph images exhibit a good octahedral morphology of the product The formation gamma-Mn3O4 is further confirmed by Raman and FTIR spectroscopy (C) 2010 Elsevier B V All rights reserved.
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