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<p>In this work, graphitic carbon nitride was added as the composite partner to synthesize the nanocomposite of strontium doped zinc oxide/graphitic carbon nitride (ZnO:Sr/g-C<sub>3</sub>N<sub>4</sub>) <sub>green</sub> using <i>Morinda citrifolia</i> (<i>M. citrifolia</i>) leaf extract via a soft-chemical method. The photocatalytic and biomedical applications along with the structural, morphological, optical and compositional properties the nanocomposite were compared with its chemically synthesized counterparts. The material has hexagonal wurtzite structure. The drastic- reduction in the bandgap (from 3.5 to 1.9&#xa0;eV) due to the coupling of the carbonaceous 2D composite partner g-C<sub>3</sub>N<sub>4</sub> results in an enhanced photocatalytic degradation efficiency against the cationic dye MB (99%) and anionic dye MO (95%) compared to bare ZnO and other tested materials. Additionally, antioxidant and antidiabetic properties of the materials were evaluated using DPPH and α-amylase assays, respectively. The nanocomposite exhibited promising antioxidant and antidiabetic properties suggesting its potential for biomedical applications.</p>

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Eco-friendly photocatalytic dye detoxification and biomedical applications of ZnO:Sr/ g-C3N4 nanocomposite: reaping the benefit of band gap reduction

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • A. Sudha,
  • I. Manimehan,
  • B. Sundaresan,
  • R. Arivuselvi,
  • S. Manimaran,
  • M. Ayyanar,
  • P. Gangapriya,
  • K. Ravichandran

摘要

In this work, graphitic carbon nitride was added as the composite partner to synthesize the nanocomposite of strontium doped zinc oxide/graphitic carbon nitride (ZnO:Sr/g-C3N4) green using Morinda citrifolia (M. citrifolia) leaf extract via a soft-chemical method. The photocatalytic and biomedical applications along with the structural, morphological, optical and compositional properties the nanocomposite were compared with its chemically synthesized counterparts. The material has hexagonal wurtzite structure. The drastic- reduction in the bandgap (from 3.5 to 1.9 eV) due to the coupling of the carbonaceous 2D composite partner g-C3N4 results in an enhanced photocatalytic degradation efficiency against the cationic dye MB (99%) and anionic dye MO (95%) compared to bare ZnO and other tested materials. Additionally, antioxidant and antidiabetic properties of the materials were evaluated using DPPH and α-amylase assays, respectively. The nanocomposite exhibited promising antioxidant and antidiabetic properties suggesting its potential for biomedical applications.