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<p>In the present study, we have successfully fabricated ZnS/NiS nanocomposites by a facile hydrothermal co-precipitation route without inert gas and specific conditions, which provides an easy and cost-effective method for up-scaling. Comprehensive structural and optical characterizations (XRD, FTIR, Raman, SEM, TEM, BET, UV–Vis) confirmed strong interfacial related ZnS and NiS solid phases. These synergistic results remarkably enhanced the photocatalytic performance, with over 95% degradation of noxious dye pollutants (methylene blue, methyl orange, and methyl red) in both visible light and UV irradiation. The optical absorption range was broadened, charge transfer is reinforced, and electron–hole recombination from the excited state to the ground-state can be efficiently prohibited in contrast to pure ZnS. As a result, the nanocomposite was proved to have good stability and reusability in cycling tests. The importance and novelty of this work are to prove ZnS/NiS is a kind of highly active, cheap, and stable photocatalyst that can greatly reduce hydrogen from water under visible light. In addition, the enhanced photocatalytic activity (due to the synergistic effect) for the resulting material provides a potential prospect in conditions of large-scale waste water purification and sustainable green technologies for environmental cleanup.</p>

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Detailed investigation of the optical and photocatalytic properties of ZnS/NiS nanocomposite for efficient water purification and dye degradation

  • 期刊论文

  • 发表日期：

    2025年11月27日

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  • F. Amiri,
  • P. Iranmanesh,
  • N. Khorasanipour,
  • S. Saeednia

摘要

In the present study, we have successfully fabricated ZnS/NiS nanocomposites by a facile hydrothermal co-precipitation route without inert gas and specific conditions, which provides an easy and cost-effective method for up-scaling. Comprehensive structural and optical characterizations (XRD, FTIR, Raman, SEM, TEM, BET, UV–Vis) confirmed strong interfacial related ZnS and NiS solid phases. These synergistic results remarkably enhanced the photocatalytic performance, with over 95% degradation of noxious dye pollutants (methylene blue, methyl orange, and methyl red) in both visible light and UV irradiation. The optical absorption range was broadened, charge transfer is reinforced, and electron–hole recombination from the excited state to the ground-state can be efficiently prohibited in contrast to pure ZnS. As a result, the nanocomposite was proved to have good stability and reusability in cycling tests. The importance and novelty of this work are to prove ZnS/NiS is a kind of highly active, cheap, and stable photocatalyst that can greatly reduce hydrogen from water under visible light. In addition, the enhanced photocatalytic activity (due to the synergistic effect) for the resulting material provides a potential prospect in conditions of large-scale waste water purification and sustainable green technologies for environmental cleanup.