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[期刊论文]

Nitrogen–doped titanium dioxide/schwertmannite nanocomposites as heterogeneous photo–Fenton catalysts with enhanced efficiency for the degradation of bisphenol A

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author:

Qiao, X.-X. (Qiao, X.-X..) [1] | Xu, Y.-H. (Xu, Y.-H..) [2] | Liu, X.-J. (Liu, X.-J..) [3] | Unfold

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Scopus CSCD

Abstract:

Potential health risks related to environmental endocrine disruptors (EEDs) have aroused research hotspots at the forefront of water treatment technologies. Herein, nitrogen–doped titanium dioxide/schwertmannite nanocomposites (N–TiO2/SCH) have been successfully developed 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 degradation 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 catalysts, but also lays a theoretical foundation for the potential application of mineral–based materials in wastewater treatment. © 2023

Keyword:

Environmental endocrine disruptors Fenton reaction Photocatalysis Schwertmannite Titanium dioxide

Community:

  • [ 1 ] [Qiao X.-X.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 2 ] [Xu Y.-H.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 3 ] [Liu X.-J.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 4 ] [Chen S.-L.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 5 ] [Zhong Z.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 6 ] [Li Y.-F.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
  • [ 7 ] [Lü J.]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
  • [ 8 ] [Lü J.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China

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Source :

Journal of Environmental Sciences (China)

ISSN: 1001-0742

Year: 2024

Volume: 143

Page: 1-11

5 . 9 0 0

JCR@2023

CAS Journal Grade:2

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30 Days PV: 0

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