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Preparation of Nano-Scale a-Al2O3 Powder by the Sol-Gel Method.

Abdullah, Luqman Chuah and Mirjalili, Fatemeh and Mohamad, Hasmaliza (2011) Preparation of Nano-Scale a-Al2O3 Powder by the Sol-Gel Method. Ceramics-Silikáty, 55 (4). pp. 378-383. ISSN 0862-5468

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Sol-gel method was applied to synthesize ultrafine nano α-alumina particles using aqueous solutions of aluminum isopropoxide and 0.5 M aluminum nitrate hydrate. Sodium dodecylbenzen suffocate and Sodium bis-2ethylhexyl sulfosuccinate were also used as surfactant stabilizing agents. The prepared solution was stirred for 48 hours at 60°C, then, the resultant gelled mass was dried at 90°C, and finally, calcined at 1200°C for about 1 hour. The samples were characterized by different techniques such as, Brunauer-Emmet-Teller method, X-ray diffraction, Thermogravimetry analysis, Differential Scanning Calorimetry, Fourier transform infrared spectra, Scanning electron microscopy and Transmission electron microscopy. The results indicated that the addition of sodium dodecylbenzen sufonates and sodium bis-2ethylhexyl sulfosuccinate not only affected the particle size and shape of the produced nanoparticles but also the degree of aggregation. However, sodium dodecylbenzen sufonate produced better dispersion and finer particles, in range of 20-30 nm, compared to Sodium bis- 2ethylhexyl sulfosuccinate.

Item Type:Article
Keyword:Nano particle; Ceramic alumina; Sol-gel methods
Faculty or Institute:Faculty of Engineering
ID Code:23476
Deposited By: Muizzudin Kaspol
Deposited On:04 Aug 2014 08:49
Last Modified:20 Oct 2015 16:56

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