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HomeMaterials Science ForumMaterials Science Forum Vol. 671Nanomaterial Preparations by Microwave-Assisted...

Nanomaterial Preparations by Microwave-Assisted Solution Combustion Method and Material Properties of SnO₂ Powder - A Status Review

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Abstract:

A nanocrystalline tin oxide (SnO2) powders have been prepared by a simple, low-temperature initiated, self-propagating and gas producing by microwave-assisted solution combustion process. The effects of temperature on crystalline phase formation and particle size of nanocrystalline SnO2 and its structure have been investigated. It is observed that heat-treated upto 800°C shows tetragonal phase SnO2. It was observed that the average crystallite size of the annealed SnO2 samples is in the range 9 - 43 nm through controlled heat treatment process. The crystal density of the as-prepared powder is 5.850g cm-3 where as the bulk density is 6.998 g cm−3. The microstructure and morphology were studied by scanning electron microscope (SEM) and HRTEM it is interesting to note that as-prepared SnO2 sample are almost spherical in shape and average agglomerate crystal size of 0.2 – 0.4 μm with increase in calcination temperature, the samples become better morphology than the as-prepared sample. The crystallographic parameters were refined by XRD pattern and Rietveld refinement using TOPAS-3 and Diamond software was used to construct the structural parameters.

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Materials Science Forum (Volume 671)

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69-120

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https://doi.org/10.4028/www.scientific.net/MSF.671.69

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Online since:

January 2011

Authors:

L.C. Nehru, V. Swaminathan, M. Jayachandran, C. Sanjeeviraja

Keywords:

Microwave-Assisted Solution Combustion, Nanocrystalline, SnO₂

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