Naskar, Milan Kanti (2010) Soft Solution Processing for the Synthesis of Alumina Nanoparticles in the Presence of Glucose. Journal of the Amecican Ceramic Society, 93 (5). pp. 1260-1263. ISSN 0002-7820

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Alumina nanoparticles were synthesized following hydrothermal process at 170 degrees C for 6 h, using glucose and other water-based precursor materials. The uncalcined and calcined (550 degrees-1200 degrees C) particles were characterized by differential thermal analysis, thermogravimetry, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and multipoint Brunauer-Emmett-Teller (BET) surface area. The microstructures of the calcined (at 550 degrees C) particles were examined by field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). XRD and FTIR studies revealed that gamma-alumina (gamma-Al(2)O(3)) persisted up to 1000 degrees C followed by the appearance of alpha-alumina (alpha-Al(2)O(3)) at 1200 degrees C. BET surface area analysis confirmed that the specific surface area of gamma-Al(2)O(3) was higher compared with alpha-Al(2)O(3). Because of particle agglomeration, the crystallite sizes obtained by the BET method showed larger values than those determined by the XRD method for the samples calcined at 550 degrees-1200 degrees C. For 550 degrees C-treated sample, FESEM micrograph showed the aggregated particles of size 20-80 nm, while TEM image of the same sample revealed a particle size of 5-10 nm.

Item Type: Article
Subjects: Engineering Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 15 Feb 2012 07:05
Last Modified: 15 Feb 2012 07:05

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