Preparation and Evaluation of NiFe204 and CuFe204 Nanoeatalysts by Combination of Sol- Gel Auto-Combustion Method and Irradiation Technique

الموضوعات : Journal of Physical & Theoretical Chemistry

S. A. Khorrami ¹ , S. A. Sepehr ² , S. Manie ³ , G. Mahmoudzadeh ⁴ , S. Madani ⁵ , S. Moradi ⁶ , A. M. Sharif ⁷ , F. Gharib ⁸ , R. Lotfi ⁹

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تاريخ الإرسال : 12 السبت , شعبان, 1436 تاريخ التأكيد : 12 السبت , شعبان, 1436 تاريخ الإصدار : 17 السبت , جمادى الأولى, 1431

الکلمات المفتاحية: Auto-Combustion: Irradiation T, NiFe204, SEM, XRD,

ملخص المقالة :

The dried nitrate-urea gels exhibit the combination of autoicatatric combustion behavior and ultrasonic, whichcan be used to synthesize the nanocatalyst ferrite powders. Cu and Ni Unites nanocatalyst powders sithcomposition of Caned], and NiFe204 were synthesized by a sol-gel auto catalnic combustion process. Themolar ratio between metal ions and urea was 11.2. The sob gel process was done at 80 °C. The nanopaniclecrystallines have been calcined at 800 °C.Combustion behavior and crystallite size of synthesized powders were investigated iyith the help of ScanningElectron Microscopy observation and X-ray diffraction technique. X- ray diffraction and Scanning ElectronMicroscopy were carried out for charactenzation of the powders. The grain size of the prepared femte powdersis found lobe in the range 30-35 mu_