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<p>In this study, ZnO was anchored on boron-doped graphitic carbon nitride (BCN) and investigated both characteristics and photocatalytic activity. Indeed, various characterization techniques were employed to evaluate the impact of doping on photocatalytic degradation performance for antibiotics. ZnO was synthesized via a phyto-synthesis route using <i>Garcinia mangostana</i> pericarp extract, while BCN was prepared through the thermal condensation of melamine and boric acid with various ratios between the precursors. As a result, ZnO was successfully loaded on BCN by a simple calcination method with different loading wt.%. The sample with a doping ratio between CN to B of 1:1.5 and a loading of 10 wt.% ZnO demonstrated excellent photocatalytic activities. X-ray photoelectron spectroscopy confirmed the successful incorporation of B into the CN matrix. For the photocatalytic degradation of tetracycline, the favorable conditions were confirmed with 20&#xa0;mg photocatalyst, 50&#xa0;mL of tetracycline solution (10&#xa0;ppm) for 180&#xa0;min of irradiation, which achieved 76.7% removal efficiency of the antibiotic. Furthermore, the synthesized photocatalyst exhibited excellent reusability, maintaining approximately 91% of its original degradation performance after five consecutive degradation cycles. The results demonstrate the potential of the ZnO-BCN materials to serve as an effective photocatalyst in removing antibiotic residues from water as an environmentally friendly approach and achieving sustainable goals in water treatment.</p>

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ZnO anchored boron-doped graphitic carbon nitride as a visible light responsive photocatalyst for enhancing tetracycline degradation and cytotoxicity studies

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Nguyen Hung Vu,
  • Le Minh Huong,
  • Nguyen Minh Dat,
  • Nguyen Thanh Hoai Nam,
  • Nguyen Huu Hieu

摘要

In this study, ZnO was anchored on boron-doped graphitic carbon nitride (BCN) and investigated both characteristics and photocatalytic activity. Indeed, various characterization techniques were employed to evaluate the impact of doping on photocatalytic degradation performance for antibiotics. ZnO was synthesized via a phyto-synthesis route using Garcinia mangostana pericarp extract, while BCN was prepared through the thermal condensation of melamine and boric acid with various ratios between the precursors. As a result, ZnO was successfully loaded on BCN by a simple calcination method with different loading wt.%. The sample with a doping ratio between CN to B of 1:1.5 and a loading of 10 wt.% ZnO demonstrated excellent photocatalytic activities. X-ray photoelectron spectroscopy confirmed the successful incorporation of B into the CN matrix. For the photocatalytic degradation of tetracycline, the favorable conditions were confirmed with 20 mg photocatalyst, 50 mL of tetracycline solution (10 ppm) for 180 min of irradiation, which achieved 76.7% removal efficiency of the antibiotic. Furthermore, the synthesized photocatalyst exhibited excellent reusability, maintaining approximately 91% of its original degradation performance after five consecutive degradation cycles. The results demonstrate the potential of the ZnO-BCN materials to serve as an effective photocatalyst in removing antibiotic residues from water as an environmentally friendly approach and achieving sustainable goals in water treatment.