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<p>The current study leverages the synthesis of S, Zn co-doped SnO<sub>2</sub> quantum dots, which were produced employing a simple sol–gel method. It was examined how UV and visible light contribute to the photodegradation of Crystal Violet (CV) dye, which was utilized as a model dye. XRD analysis confirmed the formation of a tetragonal SnO<sub>2</sub> crystal system. By employing the Debye–Scherrer equation, the crystallite sizes for SnO<sub>2</sub> and S, Zn co-doped SnO<sub>2</sub> nanoparticles were determined to be 24.3&#xa0;nm and 5.6&#xa0;nm, respectively. The findings suggest that doping reduces the crystallite size. The formation of S, Zn co-doped SnO<sub>2</sub> nanoparticles was confirmed by high-resolution transmission electron microscopy (HR-TEM)&#xa0;analysis. Surface areas for SnO<sub>2</sub> and S, Zn co-doped SnO<sub>2</sub> samples are 15.37 m<sup>2</sup>/g and 23.06 m<sup>2</sup>/g, respectively, according to N<sub>2</sub> adsorption–desorption analysis. The X-ray photoelectron spectroscopy (XPS) was considered&#xa0;an efficient way of determining the chemical states of the constituent elements of the prepared samples. The optical band gaps of each fabricated nanoparticle were calculated using the Tauc plot relation. The values obtained are 2.67 and 2.57&#xa0;eV for SnO<sub>2</sub> and S, Zn co-doped SnO<sub>2</sub> nanoparticles, respectively. The co-doped sample exhibits a decrease in peak intensity, as demonstrated by the PL spectra. Additionally, the S, Zn co-doped SnO<sub>2</sub> photocatalyst exhibits higher photocatalytic activity (92.2% under UV light irradiation after 75&#xa0;min) than the effects of pure SnO<sub>2</sub> nanomaterials when it comes to crystal violet pollutants. Its unique properties are linked to decreased charge recombination and increased charge separation in the S, Zn co-doped SnO<sub>2</sub> photocatalyst activity, indicating that it may be a material which has the&#xa0;potential to reduce&#xa0;water pollution in an economically viable manner.</p>

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Preparation of S, Zn co-doped SnO2 nanostructures and their insights into the structural, morphological, optical and Photocatalytic activity

  • 期刊论文

  • 发表日期：

    2025年5月12日

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  • S. Shabna,
  • S. Sahaya Jude Dhas,
  • V. Shenbagavalli,
  • R. George Sahaya Nixon,
  • C. S. Biju,
  • S. Sebastiammal,
  • Sivakumar Aswathappa,
  • Abdulrahman I. Almansour

摘要

The current study leverages the synthesis of S, Zn co-doped SnO2 quantum dots, which were produced employing a simple sol–gel method. It was examined how UV and visible light contribute to the photodegradation of Crystal Violet (CV) dye, which was utilized as a model dye. XRD analysis confirmed the formation of a tetragonal SnO2 crystal system. By employing the Debye–Scherrer equation, the crystallite sizes for SnO2 and S, Zn co-doped SnO2 nanoparticles were determined to be 24.3 nm and 5.6 nm, respectively. The findings suggest that doping reduces the crystallite size. The formation of S, Zn co-doped SnO2 nanoparticles was confirmed by high-resolution transmission electron microscopy (HR-TEM) analysis. Surface areas for SnO2 and S, Zn co-doped SnO2 samples are 15.37 m2/g and 23.06 m2/g, respectively, according to N2 adsorption–desorption analysis. The X-ray photoelectron spectroscopy (XPS) was considered an efficient way of determining the chemical states of the constituent elements of the prepared samples. The optical band gaps of each fabricated nanoparticle were calculated using the Tauc plot relation. The values obtained are 2.67 and 2.57 eV for SnO2 and S, Zn co-doped SnO2 nanoparticles, respectively. The co-doped sample exhibits a decrease in peak intensity, as demonstrated by the PL spectra. Additionally, the S, Zn co-doped SnO2 photocatalyst exhibits higher photocatalytic activity (92.2% under UV light irradiation after 75 min) than the effects of pure SnO2 nanomaterials when it comes to crystal violet pollutants. Its unique properties are linked to decreased charge recombination and increased charge separation in the S, Zn co-doped SnO2 photocatalyst activity, indicating that it may be a material which has the potential to reduce water pollution in an economically viable manner.