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<p>Graphitic carbon nitride (g-C₃N₄) has emerged as a highly promising material for next-generation multifunctional applications due to its tunable electronic structure and chemical stability. In this study, pristine g-C₃N₄ was synthesised via thermal condensation of melamine, followed by zinc (Zn) doping through a solvothermal route to enhance its structural, electronic, and functional properties. X-ray diffraction confirmed the successful incorporation of Zn into the g-C₃N₄ framework, while HRSEM and HRTEM analyses revealed a porous nanostructure favourable for ion transport in supercapacitor devices. UV–visible spectroscopy indicated intensified absorption peaks with increasing Zn content, suggesting improved electronic interactions. Electrochemical investigations demonstrated a wide potential window and significantly enhanced capacitance, validating the suitability of Zn-doped g-C₃N₄ as a high-performance electrode material. Furthermore, antibacterial assessments against E. coli and B. subtilis revealed a moderate inhibition zone, confirming its potential in biomedical applications. The dual functionality—energy storage capability and antibacterial activity—positions Zn-doped g-C₃N₄ as a versatile candidate for advanced multifunctional devices and local materials.</p>

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Electrochemical Characterisation and Antibacterial Studies of Zn-Doped g-C₃N₄ Nanocomposites

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • G. Sudha,
  • J. T. Anandhi,
  • A. R. Baby Suganthi,
  • Chandrasekar Karuppaiah,
  • Arul Varman Kesavan,
  • F. M. Anjalin

摘要

Graphitic carbon nitride (g-C₃N₄) has emerged as a highly promising material for next-generation multifunctional applications due to its tunable electronic structure and chemical stability. In this study, pristine g-C₃N₄ was synthesised via thermal condensation of melamine, followed by zinc (Zn) doping through a solvothermal route to enhance its structural, electronic, and functional properties. X-ray diffraction confirmed the successful incorporation of Zn into the g-C₃N₄ framework, while HRSEM and HRTEM analyses revealed a porous nanostructure favourable for ion transport in supercapacitor devices. UV–visible spectroscopy indicated intensified absorption peaks with increasing Zn content, suggesting improved electronic interactions. Electrochemical investigations demonstrated a wide potential window and significantly enhanced capacitance, validating the suitability of Zn-doped g-C₃N₄ as a high-performance electrode material. Furthermore, antibacterial assessments against E. coli and B. subtilis revealed a moderate inhibition zone, confirming its potential in biomedical applications. The dual functionality—energy storage capability and antibacterial activity—positions Zn-doped g-C₃N₄ as a versatile candidate for advanced multifunctional devices and local materials.