Microwave-induced combustion synthesis of nanocrystalline TiO2-SiO2 binary oxide material (Abstract Only)
IR@IICT: CSIR-Indian Institute of Chemical Technology, Hyderabad
View Archive InfoField | Value | |
Creator |
Khan, A
Madhavendra, S.S Reddy, B.M |
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Date |
2008-12-13T06:30:37Z
2008-12-13T06:30:37Z 2004 |
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Identifier |
Journal of Materials Research,Vol.19, 1015-1023p
http://hdl.handle.net/123456789/43 |
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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.
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Title |
Microwave-induced combustion synthesis of nanocrystalline TiO2-SiO2 binary oxide material (Abstract Only)
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Type |
Article
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