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<p>This study presents the development of a new carbon quantum dot/ferric nitrate (CQD/Fe(NO₃)₃) composite featuring super-hydrophilic and fluorescent characteristics tailored for efficient photocatalytic applications. The material was synthesized through a rapid microwave-assisted process using different ratios of citric acid and ferric nitrate. Structural and morphological evaluations confirmed the successful formation of uniformly distributed CQDs on Fe(NO₃)₃ flakes, with surface functional groups contributing to excellent water dispersibility and biocompatibility. Among the prepared samples, the 3:1:1 CQD/Fe(NO₃)₃ composite displayed pronounced blue luminescence, a contact angle below 10°, and outstanding photocatalytic activity, achieving 92% degradation of methyl orange under visible light within 30&#xa0;min. The distinctiveness of this work arises from the creation of a super-hydrophilic, fluorescent CQD/Fe(NO₃)₃ material synthesized via an ultrafast microwave route—a combination not previously reported. Its rare blend of extremely low contact angle, strong luminescence, and superior visible-light degradation efficiency demonstrates the composite’s advanced multifunctional performance. Overall, the material shows strong promise for environmental remediation and potential bio-related applications.</p>

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Photocatalytic performance of novel super-hydrophilic carbon quantum dots/Fe(NO3)3 composites for catalytic applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月16日

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  • Jinu Binu Mukkadan,
  • Monika Siddharthan,
  • Mithra Geetha,
  • Enas Fares,
  • Malavika Suresh Kumar,
  • Devika Suresh Kumar,
  • Alaa Elsafi,
  • Mohamed Abbas,
  • Kishor Kumar Sadasivuni,
  • Nihal Maliekkal Poovadichalil

摘要

This study presents the development of a new carbon quantum dot/ferric nitrate (CQD/Fe(NO₃)₃) composite featuring super-hydrophilic and fluorescent characteristics tailored for efficient photocatalytic applications. The material was synthesized through a rapid microwave-assisted process using different ratios of citric acid and ferric nitrate. Structural and morphological evaluations confirmed the successful formation of uniformly distributed CQDs on Fe(NO₃)₃ flakes, with surface functional groups contributing to excellent water dispersibility and biocompatibility. Among the prepared samples, the 3:1:1 CQD/Fe(NO₃)₃ composite displayed pronounced blue luminescence, a contact angle below 10°, and outstanding photocatalytic activity, achieving 92% degradation of methyl orange under visible light within 30 min. The distinctiveness of this work arises from the creation of a super-hydrophilic, fluorescent CQD/Fe(NO₃)₃ material synthesized via an ultrafast microwave route—a combination not previously reported. Its rare blend of extremely low contact angle, strong luminescence, and superior visible-light degradation efficiency demonstrates the composite’s advanced multifunctional performance. Overall, the material shows strong promise for environmental remediation and potential bio-related applications.