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Saeidi, M, Sarpoolaky, Hossein, Mirkazemi, S. M.. (1391). Ultrasonic–Assisted Co–Precipitation Method of Preparation of Nanocomposites in The Al2O3–TiO2–ZrO2 System: Characterization and Microsturcture. , 45(1), 7-12. doi: 10.7508/jufgnsm.2012.01.002
M Saeidi; Hossein Sarpoolaky; S. M. Mirkazemi. "Ultrasonic–Assisted Co–Precipitation Method of Preparation of Nanocomposites in The Al2O3–TiO2–ZrO2 System: Characterization and Microsturcture". , 45, 1, 1391, 7-12. doi: 10.7508/jufgnsm.2012.01.002
Saeidi, M, Sarpoolaky, Hossein, Mirkazemi, S. M.. (1391). 'Ultrasonic–Assisted Co–Precipitation Method of Preparation of Nanocomposites in The Al2O3–TiO2–ZrO2 System: Characterization and Microsturcture', , 45(1), pp. 7-12. doi: 10.7508/jufgnsm.2012.01.002
Saeidi, M, Sarpoolaky, Hossein, Mirkazemi, S. M.. Ultrasonic–Assisted Co–Precipitation Method of Preparation of Nanocomposites in The Al2O3–TiO2–ZrO2 System: Characterization and Microsturcture. , 1391; 45(1): 7-12. doi: 10.7508/jufgnsm.2012.01.002

Ultrasonic–Assisted Co–Precipitation Method of Preparation of Nanocomposites in The Al2O3–TiO2–ZrO2 System: Characterization and Microsturcture

Journal of Ultrafine Grained and Nanostructured Materials
مقاله 2، دوره 45، شماره 1، دی 2012، صفحه 7-12    اصل مقاله (366.49 K)
شناسه دیجیتال (DOI): 10.7508/jufgnsm.2012.01.002
نویسندگان
M Saeidi؛ Hossein Sarpoolaky؛ S. M. Mirkazemi
School of Metallurgy & Materials Engineering, Iran University of Science & Technology
چکیده
Recently, the Al2O3–TiO2–ZrO2 system has found valuable applications, particularly, as a support for NOx
storage–reduction (NSR) catalysts. Nanocomposite powders were prepared from the co-precipitation method
in inorganic precursors. The behaviors of mixed oxide nanoparticles under ultrasonic irradiation, such as
dispersion, and crushing were studied. Phase transformations, crystallite size, and microstructure of the
mixed oxides were investigated by STA (DTA/TG), FTIR, XRD, and SEM. XRD studies showed that
zirconium titanate (ZT) is main phase, and the crystallite size varies with the final calcination temperature,
and ultrasonic irradiations. SEM observations revealed that the calcination temperature strongly influences
the morphology of prepared mixed oxides. The results showed that the inorganic nanoparticles in the
aqueous solution can be redispersed more effectively by ultrasonic irradiation than by conventional stirring.
The average crystallite sizes of the ZT particles heat treated at 1200 °C for 2 h were in the range of 47-85
nm.
کلیدواژه‌ها
co-precipitation؛ FTIR؛ Ultrasonic
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