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author:

Zhang, Z. (Zhang, Z..) [1] | Chen, X. (Chen, X..) [2] | Yu, Y. (Yu, Y..) [3] | Pan, W. (Pan, W..) [4] | Liu, R. (Liu, R..) [5] | Song, J. (Song, J..) [6] | Hu, J. (Hu, J..) [7]

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Scopus

Abstract:

Phosphate and fluoride ions are common water pollutants whose presence and excessive discharge cause potential hazards to the environment and human health. MOF materials commonly used to remove phosphate and fluoride ions are usually in powder form, with low recovery during regeneration. Herein, to address these issues, Fe3O4@La-Zr-MOFs magnetic composites for phosphate and fluoride removal were fabricated by means of the hydrothermal method. The adsorption properties of the adsorbent were systematically assessed by means of adsorption experiments. The magnetic Fe3O4@La-Zr-MOFs exhibited a magnetic recovery efficiency of 93%, and they could maintain outstanding adsorption performance at a broad range of pH values and superior selectivity for phosphate and fluoride ions. The adsorption process conformed to the Langmuir isotherm and pseudo-second-order models, indicating that it was dominated by monomolecular chemisorption. Further characterization of the Fe3O4@La-Zr-MOFs before and after adsorption and kinetic thermodynamic investigation revealed that the elimination mechanism of phosphate and fluoride ions by Fe3O4@La-Zr-MOFs includes ion exchange, electrostatic interactions, and surface complexation. This study demonstrates that magnetic reusable Fe3O4@La-Zr-MOFs composites have great promise for phosphate and fluoride removal and recovery. © 2025 by the authors.

Keyword:

adsorption defluoridation metal–organic frameworks phosphate removal

Community:

  • [ 1 ] [Zhang Z.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350001, China
  • [ 2 ] [Zhang Z.]Key Laboratory of Green Chemical Technology of Fujian Province University, Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, 354300, China
  • [ 3 ] [Chen X.]Key Laboratory of Green Chemical Technology of Fujian Province University, Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, 354300, China
  • [ 4 ] [Chen X.]College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350001, China
  • [ 5 ] [Yu Y.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350001, China
  • [ 6 ] [Yu Y.]Key Laboratory of Green Chemical Technology of Fujian Province University, Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, 354300, China
  • [ 7 ] [Pan W.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350001, China
  • [ 8 ] [Liu R.]Key Laboratory of Green Chemical Technology of Fujian Province University, Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, 354300, China
  • [ 9 ] [Song J.]Research Center for Environmental Functional Materials, State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
  • [ 10 ] [Hu J.]College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350001, China
  • [ 11 ] [Hu J.]Key Laboratory of Green Chemical Technology of Fujian Province University, Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Wuyishan, 354300, China

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Source :

Nanomaterials

ISSN: 2079-4991

Year: 2025

Issue: 13

Volume: 15

4 . 4 0 0

JCR@2023

Cited Count:

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ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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