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

IF 3.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2025-06-26 DOI:10.1007/s10971-025-06840-3

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

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引用次数: 0

Abstract

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 (C_sp) of 1732 F/g at 1.6 A/g and a low charge transfer resistance (R_ct) 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

Explanation: SnWO₄@MoS₂ has the improved structural and electrochemical properties, such as enhanced d-spacing, capacitance, and ion diffusion.

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利用snowo4和MoS2的协同效应，增强储能器件的比电容，改善介电性能，并有效地光催化染料降解

以芦荟提取物为原料，通过绿色水热法成功合成了SnWO4@MoS2异质结构，该异质结构具有良好的集成界面，增强了电荷传输和电化学性能。XRD分析证实了异质结构的形成，d-间距增大至6.18 Å。紫外可见分析表明，该复合材料的光学带隙变窄为2.47 eV，促进了电荷分离。光催化实验表明，SnWO4@MoS2在紫外光下对亚甲基蓝（MB）染料的降解程度最大，优于单个SnWO₄和MoS₂组分。电化学测试表明，在1.6 a /g下，其比电容（Csp）为1732 F/g，电荷转移电阻（Rct）为1.09 Ω，具有良好的电导率和离子扩散性能。电介质分析揭示了频率相关的介电常数和增强的交流电导率，进一步支持其多功能性。这些结果表明SnWO4@MoS2是一种有希望同时应用于高性能超级电容器和光催化废水处理的材料。图解摘要说明：SnWO4@MoS2具有改进的结构和电化学性能，如增强的d间距，电容和离子扩散。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.