Scholarlink

<p>This study presents a novel approach by incorporating tin(IV) oxide (SnO₂) nanoparticles into a polyvinylidene fluoride (PVDF) polymer matrix to develop highly efficient and reusable photocatalytic thin films. Unlike conventional polymer-based photocatalysts, the PVDF@SnO₂ composite films demonstrate enhanced photocatalytic efficiency, increased durability, and improved light absorption properties due to the synergistic interaction between the polymer and semiconductor material. Itn this context, the PVDF@SnO₂ composite films were prepared via a solution-casting method, ensuring uniform nanoparticle distribution within the polymer matrix. Structural and optical analyses using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible (UV-Vis) spectroscopy confirmed the successful integration of SnO₂. A notable redshift in absorption from 402 nanometers (nm) to 410&#xa0;nm and a reduction in the optical band gap from 3.08 electron volts (eV) (pristine PVDF) to 3.02&#xa0;eV improved visible-light responsiveness. The photocatalytic activity was evaluated through methylene blue (MB) degradation under simulated solar light. The PVDF@SnO₂ thin films achieved a 90% degradation efficiency within 120&#xa0;min, significantly outperforming pristine PVDF (70%). Kinetic analysis confirmed that the degradation followed a first-order reaction model, with rate constants of 0.0243, 0.0318, 0.0367, 0.0395, and 0.0428 per minute (min⁻¹) at 20 degrees Celsius (°C), 30&#xa0;°C, 40&#xa0;°C, 50&#xa0;°C, and 60&#xa0;°C, respectively. The activation energy of the reaction was determined as 11.16 kilojoules per mole (kJ/mol), indicating an efficient photocatalytic process. Furthermore, reusability tests demonstrated that the films retained 74% of their initial activity after five cycles, highlighting their durability and stability. These findings confirm that the incorporation of SnO₂ enhances photocatalytic degradation by increasing the generation of reactive oxygen species (ROS) under solar light exposure. The PVDF@SnO₂ thin films exhibit excellent degradation efficiency, reusability, and structural stability, making them a promising and sustainable photocatalytic material for wastewater treatment applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

PVDF@SnO₂ Composite Thin Films: A Durable and Efficient Photocatalyst for Wastewater Treatment

  • 期刊论文

  • 发表日期：

    2025年5月8日

查看全文
  • Kübra Köşe Kaya,
  • Ceren Orak,
  • Sabit Horoz

摘要

This study presents a novel approach by incorporating tin(IV) oxide (SnO₂) nanoparticles into a polyvinylidene fluoride (PVDF) polymer matrix to develop highly efficient and reusable photocatalytic thin films. Unlike conventional polymer-based photocatalysts, the PVDF@SnO₂ composite films demonstrate enhanced photocatalytic efficiency, increased durability, and improved light absorption properties due to the synergistic interaction between the polymer and semiconductor material. Itn this context, the PVDF@SnO₂ composite films were prepared via a solution-casting method, ensuring uniform nanoparticle distribution within the polymer matrix. Structural and optical analyses using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible (UV-Vis) spectroscopy confirmed the successful integration of SnO₂. A notable redshift in absorption from 402 nanometers (nm) to 410 nm and a reduction in the optical band gap from 3.08 electron volts (eV) (pristine PVDF) to 3.02 eV improved visible-light responsiveness. The photocatalytic activity was evaluated through methylene blue (MB) degradation under simulated solar light. The PVDF@SnO₂ thin films achieved a 90% degradation efficiency within 120 min, significantly outperforming pristine PVDF (70%). Kinetic analysis confirmed that the degradation followed a first-order reaction model, with rate constants of 0.0243, 0.0318, 0.0367, 0.0395, and 0.0428 per minute (min⁻¹) at 20 degrees Celsius (°C), 30 °C, 40 °C, 50 °C, and 60 °C, respectively. The activation energy of the reaction was determined as 11.16 kilojoules per mole (kJ/mol), indicating an efficient photocatalytic process. Furthermore, reusability tests demonstrated that the films retained 74% of their initial activity after five cycles, highlighting their durability and stability. These findings confirm that the incorporation of SnO₂ enhances photocatalytic degradation by increasing the generation of reactive oxygen species (ROS) under solar light exposure. The PVDF@SnO₂ thin films exhibit excellent degradation efficiency, reusability, and structural stability, making them a promising and sustainable photocatalytic material for wastewater treatment applications.