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<p>A SnWO<sub>4</sub>@MoS<sub>2</sub> heterostructure was successfully synthesized via a green hydrothermal method using Aloe vera extract, resulting in a well-integrated interface that enhances charge transport and electrochemical performance. XRD analysis confirmed the formation of the heterostructure with an increased d-spacing upto 6.18 Å. The composite exhibited a narrowed optical band gap of 2.47 eV, as revealed by UV-vis analysis, promoting improved charge separation. Photocatalytic experiments demonstrated the greatest degree of degradation of methylene blue (MB) dye under UV light with SnWO<sub>4</sub>@MoS<sub>2</sub>, outperforming individual SnWO₄ and MoS₂ components. Electrochemical tests showed a high specific capacitance (C<sub>sp</sub>) of 1732 F/g at 1.6 A/g and a low charge transfer resistance (R<sub>ct</sub>) of 1.09 Ω, indicating excellent conductivity and ion diffusion. Dielectric analysis revealed a frequency-dependent dielectric constant and enhanced AC conductivity, further supporting its multifunctionality. These results establish SnWO<sub>4</sub>@MoS<sub>2</sub> as a promising material for simultaneous application in high-performance supercapacitors and photocatalytic wastewater treatment.</p> Graphical Abstract <p></p>

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Leveraging the synergistic effects of SnWO4 and MoS2 for enhanced specific capacitance in energy storage devices, improved dielectric properties, and efficient photocatalytic dye degradation

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Ali Mujtaba,
  • M. I. Khan,
  • Muhammad Tariq Nadeem,
  • Muhammad Naeem,
  • Lamia ben Farhat,
  • Dhafer O. Alshahrani

摘要

A SnWO4@MoS2 heterostructure was successfully synthesized via a green hydrothermal method using Aloe vera extract, resulting in a well-integrated interface that enhances charge transport and electrochemical performance. XRD analysis confirmed the formation of the heterostructure with an increased d-spacing upto 6.18 Å. The composite exhibited a narrowed optical band gap of 2.47 eV, as revealed by UV-vis analysis, promoting improved charge separation. Photocatalytic experiments demonstrated the greatest degree of degradation of methylene blue (MB) dye under UV light with SnWO4@MoS2, outperforming individual SnWO₄ and MoS₂ components. Electrochemical tests showed a high specific capacitance (Csp) of 1732 F/g at 1.6 A/g and a low charge transfer resistance (Rct) of 1.09 Ω, indicating excellent conductivity and ion diffusion. Dielectric analysis revealed a frequency-dependent dielectric constant and enhanced AC conductivity, further supporting its multifunctionality. These results establish SnWO4@MoS2 as a promising material for simultaneous application in high-performance supercapacitors and photocatalytic wastewater treatment.

Graphical Abstract