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<p>Tin sulfide (SnS) nanoparticles were synthesized by a co-precipitation method and combined with carbon nanotubes (CNTs) to form an SnS-CNT nanocomposite with enhanced properties. Structural and morphological analyses confirmed successful heterostructure formation: XRD verified the crystalline phases, FE-SEM revealed uniform distribution, and HRTEM showed SnS nanoparticles with an average size of ~ 50&#xa0;nm. UV-Vis and Raman spectroscopy further supported the electronic and vibrational features of the composite. The material exhibited dual functionality. Under visible-light irradiation, it achieved 96.97% degradation of methylene blue (MB) and 97.77% degradation of ciprofloxacin (CIP), facilitated by efficient charge separation and reactive oxygen species (•OH, •O<sub>2</sub><sup>−</sup>) generation. As a supercapacitor electrode, the composite delivered a specific capacitance of 1792&#xa0;F g<sup>− 1</sup> at 0.5&#xa0;A g<sup>− 1</sup>, with &gt; 80% retention after 5000 cycles. The enhanced performance is attributed to the synergistic role of CNTs as conductive scaffolds and SnS as active redox and light-absorbing sites. These results demonstrate the multifunctional potential of SnS–CNT nanocomposites for environmental and energy applications. The findings provide fundamental insights into heterostructure design principles and pave the way for developing next-generation hybrid materials for sustainable technologies.</p>

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Synergistic CNT-SnS nanocomposites for enhanced photocatalytic dye degradation and supercapacitor applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月27日

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  • Nachimuthu Venkatesh,
  • Sivaramalakshmi Sivaramakrishnan,
  • Gokul Pratheep Nagaiah,
  • Govindhasamy Murugadoss

摘要

Tin sulfide (SnS) nanoparticles were synthesized by a co-precipitation method and combined with carbon nanotubes (CNTs) to form an SnS-CNT nanocomposite with enhanced properties. Structural and morphological analyses confirmed successful heterostructure formation: XRD verified the crystalline phases, FE-SEM revealed uniform distribution, and HRTEM showed SnS nanoparticles with an average size of ~ 50 nm. UV-Vis and Raman spectroscopy further supported the electronic and vibrational features of the composite. The material exhibited dual functionality. Under visible-light irradiation, it achieved 96.97% degradation of methylene blue (MB) and 97.77% degradation of ciprofloxacin (CIP), facilitated by efficient charge separation and reactive oxygen species (•OH, •O2−) generation. As a supercapacitor electrode, the composite delivered a specific capacitance of 1792 F g− 1 at 0.5 A g− 1, with > 80% retention after 5000 cycles. The enhanced performance is attributed to the synergistic role of CNTs as conductive scaffolds and SnS as active redox and light-absorbing sites. These results demonstrate the multifunctional potential of SnS–CNT nanocomposites for environmental and energy applications. The findings provide fundamental insights into heterostructure design principles and pave the way for developing next-generation hybrid materials for sustainable technologies.