Advanced Ceramics Progress

Advanced Ceramics Progress

Ag/Zn Codoped TiO2 (AZT) Mesoporous Nanoparticles: Investigation the Optical Properties via Increasing Calcination Temperatures

Document Type : Original Research Article

Authors
Negin Ebrahimi 1
Behzad Koozegar Kaleji 2
1 Master, Department of Materials Engineering, Faculty of Engineering, Malayer University, Malayer, Iran.
2 Associate Professor, Department of Materials Engineering, Faculty of Engineering, Malayer University, Malayer, Iran.
10.30501/acp.2024.459534.1153
Abstract
TiO₂ nanoparticles codoped with Ag/Zn (AZT) were prepared using a simple sol-gel method. The effect of calcination temperature on the structural, optical, and photocatalytic properties of nanoparticles synthesized at temperatures of 400, 500, and 600 °C was investigated. The synthesized nanoparticles were analyzed using various methods, including thermal analysis (TG-DTA), X-ray diffraction (XRD), spectrophotometry (UV-Vis), electron microscopy (FESEM & TEM), and surface chemical analysis (XPS). To evaluate the photocatalytic activity of the samples, the degradation of an organic solution of methylene blue (MB) was performed. The results indicated that the calcination temperature significantly affects the microstructure, optical properties, and photocatalytic activity of the samples. The crystal size of AZT nanoparticles was approximately 4.15, 8.13, and 13.6 nm, respectively, with increasing calcination temperature. The optimal condition for the photocatalytic degradation of the methylene blue solution was observed at a calcination temperature of 500 °C, with a degradation percentage of 57.9% under visible light irradiation. Additionally, the bandgap energy of AZT particles decreased from 3.06 eV to 2.25 eV as the calcination temperature increased.
Keywords
Nanoparticles
Ag/Zn Codoped TiO2
Photocatalytic activity
Band Gap
Calcination Temperature

Subjects

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  • Receive Date 03 June 2024
  • Revise Date 05 August 2024
  • Accept Date 19 October 2024