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<p>In this paper, iron-doped ZrSiO<sub>4</sub> nanoceramics were prepared via straightforward solution combustion synthesis (SCS) method using glycine as a fuel. Different amounts of iron ranging from 5 to 50&#xa0;mol% for the preparation of zircon were considered at two calcination temperatures of 900 and 1100 <sup>º</sup>C. The synthesized ZrSiO<sub>4</sub>:xFe composites were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), field emission scanning electron microscopy (FE-SEM), and Raman techniques. Also, the kinetic of the SCS reaction for the ZrO<sub>2</sub>-SiO<sub>2</sub>.0.5Fe system was calculated using the Kissinger-Akahira-Sunose (KAS) approach and differential scanning calorimetry (DSC) data. Self-sustained combustion approach can lead to the preparation of hexagonal close-packed (HCP) zircon particles in one-step and without any prolonged heat treatment process. The samples produced at 1100 <sup>º</sup>C indicated hexagonal-shaped zircons with a crystallite size of 45&#xa0;nm. Reaction mechanism illustrated that the presence of iron in ZrO<sub>2</sub>-SiO<sub>2</sub> binary system resulted in decreasing combustion temperature and activation energy to 184–197 <sup>º</sup>C and 130.563&#xa0;kJ/mol, respectively.</p>

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Comparative study of ZrSiO4:xFe ceramics synthesized via solution combustion approach: physicochemical characterization and kinetic

  • 期刊论文

  • 发表日期：

    2025年7月24日

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  • Sepide Akbarpour,
  • Behnam Khoshandam

摘要

In this paper, iron-doped ZrSiO4 nanoceramics were prepared via straightforward solution combustion synthesis (SCS) method using glycine as a fuel. Different amounts of iron ranging from 5 to 50 mol% for the preparation of zircon were considered at two calcination temperatures of 900 and 1100 ºC. The synthesized ZrSiO4:xFe composites were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), field emission scanning electron microscopy (FE-SEM), and Raman techniques. Also, the kinetic of the SCS reaction for the ZrO2-SiO2.0.5Fe system was calculated using the Kissinger-Akahira-Sunose (KAS) approach and differential scanning calorimetry (DSC) data. Self-sustained combustion approach can lead to the preparation of hexagonal close-packed (HCP) zircon particles in one-step and without any prolonged heat treatment process. The samples produced at 1100 ºC indicated hexagonal-shaped zircons with a crystallite size of 45 nm. Reaction mechanism illustrated that the presence of iron in ZrO2-SiO2 binary system resulted in decreasing combustion temperature and activation energy to 184–197 ºC and 130.563 kJ/mol, respectively.