Abstract:
Potential health risks related to environmental endocrine disruptors(EEDs)have aroused re-search hotspots at the forefront of water treatment technologies.Herein,nitrogen-doped ti-tanium dioxide/schwertmannite nanocomposites(N-TiO2/SCH)have been successfully de-veloped as heterogeneous catalysts for the degradation of typical EEDs via photo-Fenton processes.Due to the sustainable Fe(Ⅲ)/Fe(Ⅱ)conversion induced by photoelectrons,as-prepared N-TiO2/SCH nanocomposites exhibit much enhanced efficiency for the degrada-tion of bisphenol A(BPA;ca.100%within 60 min under visible irradiation)in a wide pH range of 3.0-7.8,which is significantly higher than that of the pristine schwertmannite(ca.74.5%)or N-TiO2(ca.10.8%).In this photo-Fenton system,the efficient degradation of BPA is mainly attributed to the oxidation by hydroxyl radical(·OH)and singlet oxygen(1O2).Moreover,the possible catalytic mechanisms and reaction pathway of BPA degradation are systematically investigated based on analytical and photoelectrochemical analyses.This work not only provides a feasible means for the development of novel heterogeneous photo-Fenton cat-alysts,but also lays a theoretical foundation for the potential application of mineral-based materials in wastewater treatment.
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环境科学学报(英文版)
ISSN: 1001-0742
Year: 2024
Issue: 9
Volume: 143
Page: 1-11
5 . 9 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2
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