A novel approach for the synthesis of nanocrystalline zinc oxide powders by room temperature co-precipitation method |
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Authors: | V.R. KumarP.R.S. Wariar V.S. PrasadJ. Koshy |
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Affiliation: | a Department of Physics, University College, Trivandrum 695034, Kerala, Indiab National Institute for Interdisciplinary Science and Technology, CSIR, Trivandrum 695019, Kerala, India |
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Abstract: | A single step co-precipitation route has been employed for the first time in the preparation of ZnO nanoparticles using ammonium hydroxide and zinc nitrate tetrahydrate. The X-ray diffraction analysis revealed that the synthesized powder has the hexagonal (wurtzite) structure. The as-prepared ZnO powder was well crystalline, without any calcination. This is a promising result compared to those mentioned in the literature, in which crystallization of ZnO nanoparticles was detected at > 300 °C. The average crystallite size of the as-prepared ZnO nanopowder is 20-40 nm. The nanocrystalline ZnO could be sintered to ~ 95% of the theoretical density at 1300 °C in 4 h. |
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Keywords: | Zinc oxide Nanoparticles Co-precipitation Sintering |
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