Solution phase synthesis of t-ZrO2 nanoparticles in ZrO2-SiO2 mixed oxide

Title
Solution phase synthesis of t-ZrO2 nanoparticles in ZrO2-SiO2 mixed oxide
Author(s)
김기현제야슬란챤드라다스M. Balasubramanian[M. Balasubramanian]
Keywords
X-RAY-DIFFRACTION; SOL-GEL PROCESS; TETRAGONAL ZRO2; ZIRCONIUM DIOXIDE; BINARY OXIDES; PARTICLES; CATALYSTS; SUPPORT; POWDERS; SYSTEM
Issue Date
201102
Publisher
TAYLOR & FRANCIS LTD
Citation
JOURNAL OF EXPERIMENTAL NANOSCIENCE, v.6, no.1, pp.38 - 48
Abstract
A solution phase synthesis is used to prepare tetragonal zirconia nanoparticles. Ammonia solution and zirconia precursor solution were prepared separately and then mixed together to get colloidal hydroxide precipitate. The colloidal hydroxide was treated with silica sol and then the precipitate was separated and dried. The dried powder was then calcined at different temperatures for 2 and 6 h. The mean particle size of the powder calcined at 1000 degrees C was found to be around 8-10 nm. The thermal analysis of dried powder indicates the formation of bulk tetragonal zirconia phase at 780 degrees C. X-ray diffraction (XRD) and infrared spectroscopic analyses confirm the presence of 100% tetragonal zirconia phase in the powder calcined at 1000 degrees C. The addition of silica stabilised the tetragonal zirconia phase. It is advantageous to use this powder as catalyst or catalyst support that operates at high temperatures.
URI
http://hdl.handle.net/YU.REPOSITORY/25701http://dx.doi.org/10.1080/17458081003762813
ISSN
1745-8080
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이과대학 > 물리학과 > Articles
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