Kinetic Analysis for Non-isothermal Decomposition of Unirradiated and γ-Irradiated Indium Acetyl Acetonate
نوع المنشور
بحث أصيل
  • Refaat Mohammed Mahfouz
  • Sharifa Al-Ahmari
  • Amaal Al-Fawaz
  • Zaid Al-Othman
  • Ismail Khaleel Warad
  • Mohammed Rafiq Hussain Siddiqui
النص الكامل
Kinetic studies for the non-isothermal decomposition of un-irradiated and γ-irradiated indium acetyl acetonate In(acac)3 with 102 kGy total γ-ray dose were carried out in static air. The results showed that the decomposition proceeds in one major step in the temperature range of 150-250 °C with the formation of In2O3 as solid residue. The non-isothermal data for un-irradiated and γ-irradiated In(acac)3 were analysed using linear Flynn-Wall-Ozawa (FWO) and nonlinear Vyazovkin (VYZ) iso-conversional methods. The results of application of these free models on the investigated data showed a systematic dependence of Ea on α indicating a simple decomposition process. No significant changes were observed in both decomposition behaviour and (Eα-α) dependency between unirradiated and γ-irradiated In(acac)3. Calcination of In(acac)3 at 400 °C for 5 hours led to the formation of In2O3 monodispersed nanoparticles. X-ray diffraction, FTIR and SEM techniques were employed for characterization of the synthesised nanoparticles. This is the first attempt to prepare In2O3 nanoparticles by solid state thermal decomposition of In(acac)3.
Materials Research. 2011; 14(1): 7-10
بلد الناشر
نوع المنشور
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