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<p>We report facile and scalable synthesis of boron (B) doped graphitic nitride (gC₃N₄) for its multifunctional performance in electrochemistry and biomedicine. Structural and spectroscopic analysis confirm the preservation of the hepatize with induced lattice defects upon doping. The samples are labeled as pristine (gC₃N₄), B1(1% B-gC₃N₄), B3 (3% B-gC₃N₄), and B5 (5% B-gC₃N₄), for simplicity. Electrochemical evaluation reveals that B3 delivers a high specific capacitance (<i>C</i><sub>s</sub>) of 83 F/g, demonstrating efficient charge storage kinetics as compare to pristine, B1 and B5. The Asymmetric supercapacitor (ASC) is designed using B3 as positive electrode exhibits extended operating voltage of 1.5&#xa0;V, delivered maximum energy density of 6.44&#xa0;Wh/kg and power density of 265&#xa0;W/kg at a current density of 0.5&#xa0;A/g. Furthermore, boron incorporation in gC₃N₄ improves the electrocatalytic activity. Among all samples, B3 exhibited low overpotential (370&#xa0;mV) and Tafel slope (120&#xa0;mV/dec) in oxygen evolution reaction (OER), suggesting fast kinetics and favorable adsorption of oxygenated intermediates. However, the sample B5 demonstrated strong antioxidant (67.23% scavenging), membrane stabilization (79.26%), glucose uptake (67.75%), and enhanced anti-bacterial efficacy against <i>E. coli</i>. These results highlighted that B doping in gC₃N₄ as an effective strategy for its multifunctional potential in energy storage, electrocatalytic and biomedicine.</p>

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Engineering Boron Doped Carbon Nitrides (B-gC3N4) for Efficient Asymmetric Supercapacitor Electrocatalytic and Biomedical Applications

  • 期刊论文

  • 发表日期：

    2026年8月5日

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  • Said Karim Shah,
  • Brekhna,
  • Atta Ullah,
  • Adnan Sadiq,
  • Ibrar Ahmad,
  • Adil Sher,
  • Khizar Hayat

摘要

We report facile and scalable synthesis of boron (B) doped graphitic nitride (gC₃N₄) for its multifunctional performance in electrochemistry and biomedicine. Structural and spectroscopic analysis confirm the preservation of the hepatize with induced lattice defects upon doping. The samples are labeled as pristine (gC₃N₄), B1(1% B-gC₃N₄), B3 (3% B-gC₃N₄), and B5 (5% B-gC₃N₄), for simplicity. Electrochemical evaluation reveals that B3 delivers a high specific capacitance (Cs) of 83 F/g, demonstrating efficient charge storage kinetics as compare to pristine, B1 and B5. The Asymmetric supercapacitor (ASC) is designed using B3 as positive electrode exhibits extended operating voltage of 1.5 V, delivered maximum energy density of 6.44 Wh/kg and power density of 265 W/kg at a current density of 0.5 A/g. Furthermore, boron incorporation in gC₃N₄ improves the electrocatalytic activity. Among all samples, B3 exhibited low overpotential (370 mV) and Tafel slope (120 mV/dec) in oxygen evolution reaction (OER), suggesting fast kinetics and favorable adsorption of oxygenated intermediates. However, the sample B5 demonstrated strong antioxidant (67.23% scavenging), membrane stabilization (79.26%), glucose uptake (67.75%), and enhanced anti-bacterial efficacy against E. coli. These results highlighted that B doping in gC₃N₄ as an effective strategy for its multifunctional potential in energy storage, electrocatalytic and biomedicine.