Publication
Title
Photo-responsive behavior of NPs embedded into ZnAlFe-LDH matrices and their catalytic efficiency in wastewater remediation
Author
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.
Language
English
Source (journal)
Catalysis today. - Amsterdam
Publication
Amsterdam : 2015
ISSN
0920-5861
Volume/pages
252(2015), p. 7-13
ISI
000355215200003
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 18.03.2015
Last edited 20.06.2017
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