Scholarlink

<p>Rapid detection and effective catalytic degradation of dyes in&#xa0;wastewater are crucial for safeguarding environmental aquatic ecosystems and human health. Herein, we designed and fabricated a dual-functional composite of amino-rich graphitic carbon nitride combined with silver nanoparticles (H-C<sub>3</sub>N<sub>4</sub>/AgNPs), serving as both reusable surface-enhanced Raman scattering (SERS) substrate for sensitive detection and as a&#xa0;photocatalyst for efficient degradation of organic dyes. The synergistic effects of electromagnetic enhancement of plasmonic AgNPs and the chemical enhancement mechanisms of H-C<sub>3</sub>N<sub>4</sub> endowed the H-C<sub>3</sub>N<sub>4</sub>/AgNPs exceptional SERS performance. For crystal violet (CV)&#xa0;as a model analyte, it demonstrated high detection sensitivity with a detection limit (LOD) of 6.33 × 10⁻<sup>10</sup>&#xa0;M. Both the improved charge carrier separation resulting from higher amino group density and the Schottky effect arising from the metal–semiconductor junction contributed to the enhanced photocatalytic efficiency. Methylene blue (MB) was degraded by 99.2% within 8&#xa0;min under visible-light illumination, demonstrating rapid photocatalytic activity. Notably, the SERS sensitivity and recyclability of H-C<sub>3</sub>N<sub>4</sub>/Ag are preserved after four cycles, facilitating a synergistic ’detection-degradation-recycling’ process for organic pollutants, which highlights its utility in environmental monitoring and pollution control.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Amino-engineered plasmonic Schottky junctions: recyclable H-C3N4/AgNPs for integrated SERS detection and degradation of trace organic dyes

  • 期刊论文

  • 发表日期：

    2025年8月11日

查看全文
  • Shen Zixiang,
  • Bi Tianyu,
  • Liu Weiwen,
  • Yang Guang,
  • Ye Cheng,
  • Zhou Hongyang,
  • Sun Xu,
  • Sun Hui,
  • Li Jianhua,
  • Zhang Maofeng

摘要

Rapid detection and effective catalytic degradation of dyes in wastewater are crucial for safeguarding environmental aquatic ecosystems and human health. Herein, we designed and fabricated a dual-functional composite of amino-rich graphitic carbon nitride combined with silver nanoparticles (H-C3N4/AgNPs), serving as both reusable surface-enhanced Raman scattering (SERS) substrate for sensitive detection and as a photocatalyst for efficient degradation of organic dyes. The synergistic effects of electromagnetic enhancement of plasmonic AgNPs and the chemical enhancement mechanisms of H-C3N4 endowed the H-C3N4/AgNPs exceptional SERS performance. For crystal violet (CV) as a model analyte, it demonstrated high detection sensitivity with a detection limit (LOD) of 6.33 × 10⁻10 M. Both the improved charge carrier separation resulting from higher amino group density and the Schottky effect arising from the metal–semiconductor junction contributed to the enhanced photocatalytic efficiency. Methylene blue (MB) was degraded by 99.2% within 8 min under visible-light illumination, demonstrating rapid photocatalytic activity. Notably, the SERS sensitivity and recyclability of H-C3N4/Ag are preserved after four cycles, facilitating a synergistic ’detection-degradation-recycling’ process for organic pollutants, which highlights its utility in environmental monitoring and pollution control.

Graphical Abstract