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<p>Environmental pollution caused by the misuse of antibiotics is becoming increasingly severe. This study presents the preparation of a C<sub>60</sub> and multi-walled carbon nanotube (CNTs) composite photocatalyst, and its performance in degrading lomefloxacin hydrochloride (LOMH) under LED irradiation was investigated. The adsorption properties, crystalline phase, morphology, functional groups, surface chemical environment, and optical characteristics of CNTs and C<sub>60</sub>/CNTs composites were characterized, and their adsorption capacity and photocatalytic activity were evaluated. The results showed that the composites exhibited significantly higher adsorption and degradation efficiencies than pristine CNTs and C<sub>60</sub>. Specifically, CC0.2 displayed the highest adsorption capacity due to the increased surface area and active sites introduced by a small amount of C<sub>60</sub> modification, while CC5 achieved the best photocatalytic performance when coupled with persulfate, benefiting from enhanced light absorption and efficient separation of photogenerated carriers. Mechanistic analysis revealed that reactive oxygen species, particularly superoxide radicals (·O<sub>2</sub><sup>−</sup>), played a dominant role in LOMH degradation, based on which a photocatalytic mechanism was proposed and discussed. This study demonstrates the sustainable potential of C<sub>60</sub>/CNTs composites for the remediation of environmental pollutants.</p>

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Enhanced adsorption and photocatalytic degradation performance of lomefloxacin by C60/CNTs composite under LED light irradiation

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Xueyi Xie,
  • Wei Liu,
  • Jin Zhang,
  • Yuanting Deng

摘要

Environmental pollution caused by the misuse of antibiotics is becoming increasingly severe. This study presents the preparation of a C60 and multi-walled carbon nanotube (CNTs) composite photocatalyst, and its performance in degrading lomefloxacin hydrochloride (LOMH) under LED irradiation was investigated. The adsorption properties, crystalline phase, morphology, functional groups, surface chemical environment, and optical characteristics of CNTs and C60/CNTs composites were characterized, and their adsorption capacity and photocatalytic activity were evaluated. The results showed that the composites exhibited significantly higher adsorption and degradation efficiencies than pristine CNTs and C60. Specifically, CC0.2 displayed the highest adsorption capacity due to the increased surface area and active sites introduced by a small amount of C60 modification, while CC5 achieved the best photocatalytic performance when coupled with persulfate, benefiting from enhanced light absorption and efficient separation of photogenerated carriers. Mechanistic analysis revealed that reactive oxygen species, particularly superoxide radicals (·O2−), played a dominant role in LOMH degradation, based on which a photocatalytic mechanism was proposed and discussed. This study demonstrates the sustainable potential of C60/CNTs composites for the remediation of environmental pollutants.