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• W4313682085 abstract "We propose a feasible and economical method of constructing biomass-based multifunctional photocatalysts with excellent adsorption performance and high photodegradation abilities toward tetracycline (TC) and methyl blue (MB) under visible light. A series of novel hybrids of porous graphitic carbon embedded with Fe2O3/Fe3O4 nanocrystals (denoted as Fe2O3/Fe3O4@C) were derived from lichen doped with different dosages of Fe3+ by calcination at 700°C under a N2 atmosphere. The Fe2O3/Fe3O4@C hybrids exhibited nanoflake-like shapes, mesoporous structures, and efficient visible light harvesting, thus indicating enhanced adsorption ability and photoactivity toward pollutants. The formed Fe2O3/Fe3O4 heterojunction improved the separation efficiency and inhibited the recombination of photogenerated carriers, whereas the carbon network improved the transfer of photogenerated electrons. Under optimised conditions, the Fe2O3/Fe3O4@C-1 hybrid demonstrated enhanced photodegradation efficiencies of 96.4% for TC and 100% for MB under visible light. In addition, electron spin resonance and trapping measurements were performed to identify active species and determine the photocatalytic mechanism toward pollutants. •O2- and •OH were the active species involved, playing critical roles in the TC and MB photodegradation processes. In addition, a bacterium test revealed that the products of TC degradation by Fe2O3/Fe3O4@C-1 showed low biological toxicity. This work provides a promising preparation strategy or biomass-based photocatalysts for application in environmental pollutant treatment." @default.
• W4313682085 created "2023-01-08" @default.
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• W4313682085 date "2023-01-07" @default.
• W4313682085 modified "2023-10-15" @default.
• W4313682085 title "Multifunctional photocatalyst of graphitic carbon embedded with Fe₂O₃/Fe₃O₄ nanocrystals derived from lichen for efficient photodegradation of tetracycline and methyl blue" @default.
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• W4313682085 doi "https://doi.org/10.1080/09593330.2022.2164522" @default.
• W4313682085 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36609215" @default.
• W4313682085 hasPublicationYear "2023" @default.
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