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<p>The current work presents the g-C<sub>3</sub>N<sub>4</sub>/SnS (2, 4, 6 &amp; 8 wt%) and g-C<sub>3</sub>N<sub>4</sub>/SnS (6 wt%) /CdS (10, 20, &amp; 30 wt%) visible-driven nanostructured photocatalysts prepared by decorating SnS and CdS via a simple precipitation technique. Different microscopic and spectroscopic techniques successfully characterized the prepared photocatalysts. The synthesized photocatalysts were checked for the photocatalytic degradation of Rhodamine B (RhB) as a model pollutant. Among the synthesized heterostructures, g-C<sub>3</sub>N<sub>4</sub>/SnS (6 wt%)/CdS (20 wt%) exhibited a superior photo-degradation rate of ∼ 98.7% within 60&#xa0;min., which was 1.78- and 1.19-fold higher than pristine g-C<sub>3</sub>N<sub>4</sub> and binary g-C<sub>3</sub>N<sub>4</sub>/SnS (6 wt%) photocatalysts. The improved performance is ascribed to synergistic effects by the development of well-defined g-C<sub>3</sub>N<sub>4</sub>/SnS/CdS heterojunctions, outstanding light absorption, and effective charge migration and separation via a dual type-II scheme transfer phenomenon. The density functional theory (DFT) studies show a favourable band structure and a more negative binding energy of the ternary heterostructure. The scavengers trapping experiments indicated the key role of superoxide radicals in the degradation process, and the g-C<sub>3</sub>N<sub>4</sub>/SnS/CdS nanocomposite exhibited remarkable stability, losing only 5% of its efficacy after five runs. This suggests that g-C<sub>3</sub>N<sub>4</sub>/SnS/CdS appeared as a proficient catalyst for photocatalytic applications.</p>

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SnS and Cds nanoclusters coupled g-C3N4 photocatalysts: synthesis, structure, DFT analysis and application for environmental remediation

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • Swati,
  • Naveen Kumar,
  • Anuj Mittal,
  • Peter R. Makgwane,
  • Muhammad Tahir,
  • Pardeep Singh,
  • Mustapha Sahal,
  • Gita Rani,
  • Jogender,
  • Shankar Sharma

摘要

The current work presents the g-C3N4/SnS (2, 4, 6 & 8 wt%) and g-C3N4/SnS (6 wt%) /CdS (10, 20, & 30 wt%) visible-driven nanostructured photocatalysts prepared by decorating SnS and CdS via a simple precipitation technique. Different microscopic and spectroscopic techniques successfully characterized the prepared photocatalysts. The synthesized photocatalysts were checked for the photocatalytic degradation of Rhodamine B (RhB) as a model pollutant. Among the synthesized heterostructures, g-C3N4/SnS (6 wt%)/CdS (20 wt%) exhibited a superior photo-degradation rate of ∼ 98.7% within 60 min., which was 1.78- and 1.19-fold higher than pristine g-C3N4 and binary g-C3N4/SnS (6 wt%) photocatalysts. The improved performance is ascribed to synergistic effects by the development of well-defined g-C3N4/SnS/CdS heterojunctions, outstanding light absorption, and effective charge migration and separation via a dual type-II scheme transfer phenomenon. The density functional theory (DFT) studies show a favourable band structure and a more negative binding energy of the ternary heterostructure. The scavengers trapping experiments indicated the key role of superoxide radicals in the degradation process, and the g-C3N4/SnS/CdS nanocomposite exhibited remarkable stability, losing only 5% of its efficacy after five runs. This suggests that g-C3N4/SnS/CdS appeared as a proficient catalyst for photocatalytic applications.