Title
Photo-responsive behavior of <tex>$\gamma-Fe_{2}O_{3}$</tex> NPs embedded into ZnAlFe-LDH matrices and their catalytic efficiency in wastewater remediation Photo-responsive behavior of <tex>$\gamma-Fe_{2}O_{3}$</tex> NPs embedded into ZnAlFe-LDH matrices and their catalytic efficiency in wastewater remediation
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Catalysis today. - Amsterdam
Volume/pages
252(2015) , p. 7-13
ISSN
0920-5861
ISI
000355215200003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present here a fast, facile and cost-effective route to design efficient semiconductor/LDHs heterojunction photocatalysts based on γ-Fe2O3 nanoparticles (NPs)/ZnAlFe-LDHs matrices and their use as novel photocatalytic systems for wastewater remediation. Different compositions of ZnAlFe-LDHs were tailored by controlling the isomorphous substitution of Al3+ with Fe3+ as well as by the modulation of the Zn2+/(Al + Fe)3+ cationic ratio within the layers of the hydrotalcite-like matrix. The lowered band gap of the γ-Fe2O3NPs/ZnAlFe-LDHs enhanced the electronhole pair formation under light illumination and increased the photocatalysts performances. The photodegradation studies on aqueous media containing several phenolic compounds (phenol, 4-nitrophenol and 2,4-dinitrophenol) revealed that the γ-Fe2O3NPs/LDHs assemblies show high catalytic efficiency producing the total degradation of the toxic organic compounds in short times. Further, this study provides new insights into the photodegradation mechanism of the phenolic compounds in aqueous media.
E-info
https://repository.uantwerpen.be/docman/iruaauth/2df300/09501c49e17.pdf
Full text (open access)
https://repository.uantwerpen.be/docman/irua/38124a/9708.pdf
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