The enhanced properties in photocatalytic wastewater treatment: Sulfanilamide (SAM) photodegradation and Cr6+ photoreduction on magnetic Ag/ZnFe2O4 nanoarchitectures

•Ag/ZnFe2O4 nanoarchitectures were fabricated by hydrothermal method composed of ZnFe2O4 nanoparticles and Ag nanowires.•The Ag/ZnFe2O4 nanocomposites possessed excellent performance in SAM photodegradation and Cr6+ photoreduction.•·O2- played important roles in the photocatalytic process and had be...

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Bibliographic Details
Published in:Journal of alloys and compounds 2021-06, Vol.867, p.159085, Article 159085
Main Authors: Liu, Tianyu, Wang, Chongxi, Wang, Wei, Yang, Guojiang, Lu, Zhiying, Xu, Peng, Sun, Xiaonan, Zhang, Jintao
Format: Article
Language:English
Subjects:
Cr6+ photoreduction
Current carriers
Electromagnetic absorption
Energy bands
Magnetic properties
Nanocomposites
Nanoparticles
Nanowires
Performance enhancement
Photocatalysis
Photodegradation
SAM photodegradation
Schottky interface
Silver
Visible-light photocatalysis
Wastewater treatment
Water treatment
Zinc ferrites
ZnFe2O4 nanoparticles decorated Ag nanowires
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Summary:•Ag/ZnFe2O4 nanoarchitectures were fabricated by hydrothermal method composed of ZnFe2O4 nanoparticles and Ag nanowires.•The Ag/ZnFe2O4 nanocomposites possessed excellent performance in SAM photodegradation and Cr6+ photoreduction.•·O2- played important roles in the photocatalytic process and had been convinced by capturing experiment and ESR analysis.•The Schottky barriers between Ag and ZnFe2O4 could contribute to the effective charge transfer. [Display omitted] Ag/ZnFe2O4 nanoarchitectures composed of ZnFe2O4 nanoparticles loading onto Ag nanowires were fabricated by hydrothermal method. The Ag/ZnFe2O4 nanocomposites possessed excellent performance in simulated photocatalytic wastewater treatment like sulfanilamide (SAM) photodegradation and Cr6+ photoreduction. The improvement of photoactivity could be ascribed to the successful formation of Schottky interface between ZnFe2O4 nanoparticles and Ag nanowires and the enhanced light absorption ability in visible light region with modified energy band structures, which make further efforts to the ameliorate separation and improved mobility of photo-induced charge carriers with enhanced performance in photocatalysis. The Ag/ZnFe2O4 nanocomposites exhibited outstanding photoactivity than single component and more importantly, the unique magnetic properties enabled the Ag/ZnFe2O4 photocatalysts to be recycled easily with the aid of external magnetic field, which make it possible for practical applications.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.159085