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<p>The escalating presence of tetracycline (TC) in aquatic environments necessitates effective remediation approaches. Herein, we report on a 0D/2D Ni<sub>3</sub>C/g-C<sub>3</sub>N<sub>4</sub> heterostructure that demonstrates high photocatalytic activity under visible light, enabling the degradation of TC. The modification of Ni<sub>3</sub>C nanoparticles onto g-C<sub>3</sub>N<sub>4</sub> nanosheets significantly enhances photocatalytic degradation performance. The optimized 4% Ni<sub>3</sub>C/g-C<sub>3</sub>N<sub>4</sub> nanocomposite achieved 83.1% TC degradation within 120&#xa0;min, far surpassing the photoactivity of g-C<sub>3</sub>N<sub>4</sub>. Photoelectrochemical and photoluminescence analyses reveal that enhanced charge separation, mediated by interfacial interactions, minimizes electron-hole recombination, leading to increased reactive oxygen species generation and thereby accelerating TC photodegradation. This work highlights the potential of uniform Ni<sub>3</sub>C nanoparticles in concert with g-C<sub>3</sub>N<sub>4</sub> photocatalyst for the rapid removal of antibiotic contaminants.</p>

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Improved Tetracycline Degradation via Visible-Light Photocatalysis with a 0D/2D Ni3C/g-C3N4 Heterostructure

  • 期刊论文

  • 发表日期：

    2025年10月27日

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  • Limin Geng,
  • Wanjie Xu

摘要

The escalating presence of tetracycline (TC) in aquatic environments necessitates effective remediation approaches. Herein, we report on a 0D/2D Ni3C/g-C3N4 heterostructure that demonstrates high photocatalytic activity under visible light, enabling the degradation of TC. The modification of Ni3C nanoparticles onto g-C3N4 nanosheets significantly enhances photocatalytic degradation performance. The optimized 4% Ni3C/g-C3N4 nanocomposite achieved 83.1% TC degradation within 120 min, far surpassing the photoactivity of g-C3N4. Photoelectrochemical and photoluminescence analyses reveal that enhanced charge separation, mediated by interfacial interactions, minimizes electron-hole recombination, leading to increased reactive oxygen species generation and thereby accelerating TC photodegradation. This work highlights the potential of uniform Ni3C nanoparticles in concert with g-C3N4 photocatalyst for the rapid removal of antibiotic contaminants.