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<p>In this report, different SnS<sub>2</sub> nanostructures were grown by a cost effective chemical precipitation method with variation of growth time (3&#xa0;h, 6&#xa0;h, 12&#xa0;h, 24&#xa0;h). The grown nanostructures were characterized structurally and optically. Small spherical nanoparticles (NPs) with different sizes were formed inside spherical, fern leaf and kadamba flower type nanomatrices depending on different growth time. The nanostructured SnS<sub>2</sub> showed hexagonal crystal phases with very small crystallite sizes (≈&#xa0;5&#xa0;nm to ≈&#xa0;9&#xa0;nm). The calculated energy value of the indirect band gap ranged from 2.1 to 2.91&#xa0;eV. The photoluminescence spectrum showed violet emission and blue emissions were prominent along with presence of defects. The ultrafast decay from TCSPC showed variation of average carrier lifetime from 1.2 nS to 2.04 nS. The grown SnS<sub>2</sub> nanostructures were used for the visible light dependent photodegradation of methylene blue (MB) dye. The photocatalytic efficiency for the use of different nanostructured SnS<sub>2</sub> has been varied from 96 to 99.5% with first order reaction process. The apparent rate constant of the reaction varied from 0.04 to 0.06 (min)<sup>−1</sup>. The SnS<sub>2</sub> NPs formed inside fern leaf shape nanomatrices showed better photocatalytic effects. The tested results showed that the SnS<sub>2</sub> NP<sub>s</sub> were stable and reusable photocatalyst for long time applications.</p>

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Structural and optical properties of the grown nanostructure of SnS2 for enhanced photocatalytic activity under visible light irradiation

  • 期刊论文

  • 发表日期：

    2025年11月18日

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  • Bishakha Mondal,
  • Satyajit Saha,
  • Amit Kumar Bhunia

摘要

In this report, different SnS2 nanostructures were grown by a cost effective chemical precipitation method with variation of growth time (3 h, 6 h, 12 h, 24 h). The grown nanostructures were characterized structurally and optically. Small spherical nanoparticles (NPs) with different sizes were formed inside spherical, fern leaf and kadamba flower type nanomatrices depending on different growth time. The nanostructured SnS2 showed hexagonal crystal phases with very small crystallite sizes (≈ 5 nm to ≈ 9 nm). The calculated energy value of the indirect band gap ranged from 2.1 to 2.91 eV. The photoluminescence spectrum showed violet emission and blue emissions were prominent along with presence of defects. The ultrafast decay from TCSPC showed variation of average carrier lifetime from 1.2 nS to 2.04 nS. The grown SnS2 nanostructures were used for the visible light dependent photodegradation of methylene blue (MB) dye. The photocatalytic efficiency for the use of different nanostructured SnS2 has been varied from 96 to 99.5% with first order reaction process. The apparent rate constant of the reaction varied from 0.04 to 0.06 (min)−1. The SnS2 NPs formed inside fern leaf shape nanomatrices showed better photocatalytic effects. The tested results showed that the SnS2 NPs were stable and reusable photocatalyst for long time applications.