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<p>Water pollution from industrial effluents, particularly organic dyes and pharmaceuticals, is a major environmental issue. In this study, BiVO<sub>4</sub> based photocatalysts were modified in situ with nitrogen-doped carbon (NC) <i>via</i> metal–organic coordination using 2-methylimidazole, yielding BiVO<sub>4</sub> and BiVO<sub>4</sub>@NC under air and nitrogen environment, respectively. These materials were systematically characterized by means of XRD, FTIR, XPS, TEM-EDS, FESEM, PL, and UV–vis spectroscopy. Among the tested samples, BiVO<sub>4</sub>@NC showed the highest photocatalytic performance, achieving 94% degradation of methylene blue in 120&#xa0;min and 92% degradation of tetracycline hydrochloride in 60&#xa0;min under visible light. This marks a significant improvement compared to bare BiVO<sub>4</sub>, which achieved only 72% and 70% degradation of MB and TC, respectively. Furthermore, BiVO<sub>4</sub>@NC demonstrated excellent recyclability over five cycles and strong resistance to interfering ions. The enhanced performance is attributed to N-doped carbon, which improved optical absorption, reduced band gap, and facilitated charge carrier separation.</p>

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In-situ construction of BiVO4/N-Doped carbon composite for visible-light-driven degradation of methylene blue and Tetracycline hydrochloride

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • Nitin A. Tupsamindar,
  • Arun S. Chopade,
  • Sagar A. Chaudhari,
  • Abhijit N. Kadam,
  • Samadhan P. Pawar,
  • Sandip R. Sabale,
  • Avinash A. Kadam,
  • Mohaseen S. Tamboli,
  • Sadaf Jamal Gilani,
  • Vaishali Patil,
  • Dattakumar S. Mhamane,
  • Vijaykumar P. Ubale,
  • Mukund G. Mali

摘要

Water pollution from industrial effluents, particularly organic dyes and pharmaceuticals, is a major environmental issue. In this study, BiVO4 based photocatalysts were modified in situ with nitrogen-doped carbon (NC) via metal–organic coordination using 2-methylimidazole, yielding BiVO4 and BiVO4@NC under air and nitrogen environment, respectively. These materials were systematically characterized by means of XRD, FTIR, XPS, TEM-EDS, FESEM, PL, and UV–vis spectroscopy. Among the tested samples, BiVO4@NC showed the highest photocatalytic performance, achieving 94% degradation of methylene blue in 120 min and 92% degradation of tetracycline hydrochloride in 60 min under visible light. This marks a significant improvement compared to bare BiVO4, which achieved only 72% and 70% degradation of MB and TC, respectively. Furthermore, BiVO4@NC demonstrated excellent recyclability over five cycles and strong resistance to interfering ions. The enhanced performance is attributed to N-doped carbon, which improved optical absorption, reduced band gap, and facilitated charge carrier separation.