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<p>The use of dye-sensitized inorganic semiconductor materials to enhance photocatalytic performance has attracted widespread attention. Herein, we have reported an easy and rapid surface modified method to prepared a dye-sensitized composite based on cadmium sulfide (CdS) sensitized by natural chlorophyll extracted from higher plant spinach. In our work, CdS nanoparticles have been synthesized by traditional solvothermal method, which possess uniform morphology and large specific surface area for providing sufficiently catalytic reactive sites. The Chl@CdS composite prepared by direct grinding has formed a close interface connection, which could effectively promote the shortening of carrier transport distance and the acceleration of charge separation, as well as expanding the optical absorption range. Under the simulated solar irradiation, both Cr(VI) reduction degradation and RhB oxidation degradation of Chl@CdS samples have increased comparing with the bare CdS nanoparticles, in addition, the photophysical process and the photocatalytic enhanced mechanism have been revealed by systematic characterizations. Our study provides a new perspective for the modification of nano photocatalysts and we hope to supply an effective reference for the peer researcher.</p>

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High-efficient naturally extracted chlorophyll modified CdS nanoparticles for pollutants degradation

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Denghui Yang,
  • Shu Wang,
  • Yupu Liu,
  • Jian Gao,
  • Xin Li,
  • Fangzheng Yuan

摘要

The use of dye-sensitized inorganic semiconductor materials to enhance photocatalytic performance has attracted widespread attention. Herein, we have reported an easy and rapid surface modified method to prepared a dye-sensitized composite based on cadmium sulfide (CdS) sensitized by natural chlorophyll extracted from higher plant spinach. In our work, CdS nanoparticles have been synthesized by traditional solvothermal method, which possess uniform morphology and large specific surface area for providing sufficiently catalytic reactive sites. The Chl@CdS composite prepared by direct grinding has formed a close interface connection, which could effectively promote the shortening of carrier transport distance and the acceleration of charge separation, as well as expanding the optical absorption range. Under the simulated solar irradiation, both Cr(VI) reduction degradation and RhB oxidation degradation of Chl@CdS samples have increased comparing with the bare CdS nanoparticles, in addition, the photophysical process and the photocatalytic enhanced mechanism have been revealed by systematic characterizations. Our study provides a new perspective for the modification of nano photocatalysts and we hope to supply an effective reference for the peer researcher.