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<p>The present study entails the investigation of experimental findings, which elucidate that the absorption kinetics of Rhodamine B and Malachite Green dyes on hydrogel/zinc oxide/carbon quantum dot nanocomposite conform to pseudo-second-order kinetics. Additionally, the equilibrium data for both dyes exhibit a favorable association with Freundlich isotherms and Tamkin. Furthermore, the outcomes of the experimentation pertaining to the reusability of this nanocomposite in the process of dye degradation indicate a consistent degradation rate exceeding 90% across four stages. By incorporating carbon quantum dot into zinc oxide, the amalgamation of electron–hole pairs generated by radiation is mitigated, thereby endowing the synthesized hydrogel/zinc oxide/carbon quantum dot nanocomposite with enhanced photocatalytic activity as compared to zinc oxide. The inclusion of carbon quantum dot/zinc oxide nanoparticles within the hydrogel facilitates the facile separation of the photocatalyst from the solution and augments the surface adsorption properties thereof.</p>

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The elimination of environmental pollutants through the utilization of nanocomposites that rely on carbon quantum dots

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • P. Amoozadeh,
  • A. H. M. Sarrafi,
  • B. Shirkavand Hadavand,
  • Z. Rahmani,
  • A. Niazi,
  • E. Konoz

摘要

The present study entails the investigation of experimental findings, which elucidate that the absorption kinetics of Rhodamine B and Malachite Green dyes on hydrogel/zinc oxide/carbon quantum dot nanocomposite conform to pseudo-second-order kinetics. Additionally, the equilibrium data for both dyes exhibit a favorable association with Freundlich isotherms and Tamkin. Furthermore, the outcomes of the experimentation pertaining to the reusability of this nanocomposite in the process of dye degradation indicate a consistent degradation rate exceeding 90% across four stages. By incorporating carbon quantum dot into zinc oxide, the amalgamation of electron–hole pairs generated by radiation is mitigated, thereby endowing the synthesized hydrogel/zinc oxide/carbon quantum dot nanocomposite with enhanced photocatalytic activity as compared to zinc oxide. The inclusion of carbon quantum dot/zinc oxide nanoparticles within the hydrogel facilitates the facile separation of the photocatalyst from the solution and augments the surface adsorption properties thereof.