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Microwave-induced combustion synthesis of nanocrystalline TiO2-SiO2 binary oxide material (Abstract Only)

IR@IICT: CSIR-Indian Institute of Chemical Technology, Hyderabad

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Field Value
 
Creator Khan, A
Madhavendra, S.S
Reddy, B.M
 
Date 2008-12-13T06:30:37Z
2008-12-13T06:30:37Z
2004
 
Identifier Journal of Materials Research,Vol.19, 1015-1023p
http://hdl.handle.net/123456789/43
 
Description A nanocrystalline titania-silica (1 : 1 molar ratio) binary oxide material was synthesized by microwave-induced combustion process in a modified domestic microwave oven (operated at 2.45 GHz frequency and 700 W power) in approximately 60 min from in situ synthesized titanyl nitrate and siliconyl nitrate using urea as fuel. For the sake of comparison, two different types of Ti02-Si02 powders were also synthesized by the sol-gel and the coprecipitation methods. All the synthesized powders were characterized with the help of thermogravimetriy/differentiai thermal analysis, x-ray diffraction, transmission electron microscopy (TEM), and Brunauer-Emmett-Teller surface area measurements and the results compared. The as-synthesized Ti02-Si02 powder obtained by the combustion process showed an average crystallite size of 10 nm and the specific surface area of 115 m2g-'. Among the three differently synthesized Ti02-Si02 powders, only the microwave-induced combustion synthesis yielded crystalline material. TEM in particular confirmed the presence of nano-sized particles in the microwave-induced combustion-synthesized powder. Among the three analogles microwave synthesis was found to be superior in terms of ease of processing leading to time and power savings.
 
Title Microwave-induced combustion synthesis of nanocrystalline TiO2-SiO2 binary oxide material (Abstract Only)
 
Type Article