Fe3O4 Nanoparticles Coated with EDTA and Ag Nanoparticles for the Catalytic Reduction of Organic Dyes from Wastewater

Sharif, H, Mahmood, A, Cheng, H, Djellabi, R, Ali, J, Jiang, W, Wang, S, Haider, M, Mahmood, N and Wang, A 2019, 'Fe3O4 Nanoparticles Coated with EDTA and Ag Nanoparticles for the Catalytic Reduction of Organic Dyes from Wastewater', ACS Applied Nano Materials, vol. 2, pp. 5310-5319.


Document type: Journal Article
Collection: Journal Articles

Title Fe3O4 Nanoparticles Coated with EDTA and Ag Nanoparticles for the Catalytic Reduction of Organic Dyes from Wastewater
Author(s) Sharif, H
Mahmood, A
Cheng, H
Djellabi, R
Ali, J
Jiang, W
Wang, S
Haider, M
Mahmood, N
Wang, A
Year 2019
Journal name ACS Applied Nano Materials
Volume number 2
Start page 5310
End page 5319
Total pages 10
Publisher American Chemical Society
Abstract This study was undertaken to design a stable easy-recoverable Fe3O4@EDTA-Ag hybrid with rich catalytic sites via wet-chemical method for the catalytic reduction of multiple dyes in wastewater. The amorphous ethylenediaminetetraacetic acid (EDTA) layer plays an important role by strongly pinning the Ag nanoparticle (NP) catalytic sites on the surface of the Fe3O4 core with a very high ratio of 10.8%. In addition, an improved surface area from 42 to 72 and 81 m2 g1 was achieved after the decoration of Fe3O4 by EDTA and EDTA-Ag NPs, respectively. Finally, catalytic tests showed that Fe3O4@EDTA-Ag hybrid exhibits an ultrafast catalytic reduction of azo, heterocyclic, and cationic dyes with a reduction rate of about 0.05 mM/150 s. Moreover, the catalyst demonstrated a high efficiency for the simultaneous reduction of mixed dyes (N.R+MB+AY and MB+RhB+AY). Recycling tests showed that Fe3O4@EDTA-Ag has an excellent stability wherein the catalyst was recycled 10 times with a slight decrease in the reduction rate of only ∼4.5%. The dissolution of Fe from Fe3O4@EDTA-Ag was very small compared to bare Fe3O4 due to protective EDTA coating. The high catalytic activity, the magnetic recoverability, along with the excellent stability of Fe3O4@EDTA-Ag make it a potential candidate for the reduction of multiple dyes in real textile wastewaters.
Subject Nanomaterials
Functional Materials
Synthesis of Materials
Keyword(s) Fe3O4 nanoparticles wastewater treatment quantum-dot-size Ag nanoparticles catalytic dye reduction hybrid magnetic catalyst environmental remediation longer cyclic life
DOI - identifier 10.1021/acsanm.9b01250
Copyright notice © 2019 American Chemical Society
ISSN 2574-0970
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Created: Fri, 06 Sep 2019, 08:03:00 EST by Catalyst Administrator
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