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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Fe3O4 Nanoparticles Coated with EDTA and Ag Nanoparticles for the Catalytic Reduction of Organic Dyes from Wastewater
ACS Applied Nano Materials, Volume 2, No. 8, Year 2019
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Description
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 g-1 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+Rh-B+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. Copyright © 2019 American Chemical Society.
Authors & Co-Authors
Sharif, Hafiz Muhammad Adeel
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Mahmood, Asif
Australia, Sydney
The University of Sydney
Cheng, Hao Yi
China, Beijing
University of Chinese Academy of Sciences
Djellabi, Ridha
China, Beijing
Chinese Academy of Sciences
Ali, Jafar
China, Beijing
University of Chinese Academy of Sciences
Wang, Shusen
China, Beijing
Chinese Academy of Sciences
China, Beijing
University of Chinese Academy of Sciences
Mahmood, Nasir
Australia, Melbourne
Rmit University
Wang, Aijie
China, Beijing
University of Chinese Academy of Sciences
Statistics
Citations: 73
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1021/acsanm.9b01250
ISSN:
25740970