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Abstract <p>In this study, zirconium oxide (ZrO<sub>2</sub>) nanoparticles were synthesized using the hydrothermal method at sintering temperature of 400, 500, 600, and 700°C. The synthesized nanoparticles were characterized by various techniques, including UV-Visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), Photoluminescence (PL), Brunauer–Emmett–Teller (BET), Electron Spin Resonance (ESR), X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM). The XRD pattern confirmed the formation of tetragonal phase for all sintering temperatures, with the crystal size reaching a minimum of 5.5 nm at 600°C and slightly increasing to 5.9 nm at 700°C. The blue shift of the absorption edge from 372&#xa0;nm at 400°C to 376 nm at 700°C implies a modification in the particle size. SEM and EDX confirmed the uniform distribution and high purity of the nanoparticles. FT-IR analysis identified the absorption peaks of the Zr–O–Zr extension with moisture content. The BET isotherm demonstrates gradual adsorption at low pressure, with sharp rise at <i>P</i>/<i>P</i><sub>0</sub> = 1, indicating capillary condensation in mesopores. Photocatalytic degradation of methyl blue (MB) dye under sunlight irradiation demonstrated high efficiency, with ZrO<sub>2</sub> synthesized at 600°C exhibiting the best photocatalytic activity. The catalyst also showed good reusability, with only a slight decrease in degradation efficiency after four cycles. Overall, the study demonstrates the potential of ZrO<sub>2</sub> nanoparticles as effective photocatalysts for environmental remediation.</p>

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Hydrothermal Synthesis of ZrO2 Nanoparticles: Study on Structural, Optical, Morphology Properties and Photocatalyst Activity

  • 期刊论文

  • 发表日期：

    2025年3月6日

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  • A. Sathya,
  • D. Benny Anburaj,
  • V. Porkalai,
  • A. Muthuvel,
  • Nabil Al-Zaqri

摘要

Abstract

In this study, zirconium oxide (ZrO2) nanoparticles were synthesized using the hydrothermal method at sintering temperature of 400, 500, 600, and 700°C. The synthesized nanoparticles were characterized by various techniques, including UV-Visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), Photoluminescence (PL), Brunauer–Emmett–Teller (BET), Electron Spin Resonance (ESR), X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM). The XRD pattern confirmed the formation of tetragonal phase for all sintering temperatures, with the crystal size reaching a minimum of 5.5 nm at 600°C and slightly increasing to 5.9 nm at 700°C. The blue shift of the absorption edge from 372 nm at 400°C to 376 nm at 700°C implies a modification in the particle size. SEM and EDX confirmed the uniform distribution and high purity of the nanoparticles. FT-IR analysis identified the absorption peaks of the Zr–O–Zr extension with moisture content. The BET isotherm demonstrates gradual adsorption at low pressure, with sharp rise at P/P0 = 1, indicating capillary condensation in mesopores. Photocatalytic degradation of methyl blue (MB) dye under sunlight irradiation demonstrated high efficiency, with ZrO2 synthesized at 600°C exhibiting the best photocatalytic activity. The catalyst also showed good reusability, with only a slight decrease in degradation efficiency after four cycles. Overall, the study demonstrates the potential of ZrO2 nanoparticles as effective photocatalysts for environmental remediation.