A unique ZnFe2O4/graphene nanoplatelets nanocomposite for electrochemical energy storage and efficient visible light driven catalysis for the degradation of organic noxious in wastewater
Israr, Muhammad (Institut Català de Nanociència i Nanotecnologia)
Iqbal, Javed (Quaid-i-Azam University. Department of Physics)
Arshad, Aqsa (International Islamic University. Department of Physics)
Aisida, Samson O. (Quaid-i-Azam University. Department of Physics)
Ahmad, Ishaq (Quaid-i-Azam University. National Center for Physics)

Date:	2020
Abstract:	A series of ZnFe₂O₄/graphene nanoplatelets ((ZF)(GNPs)) nanocomposites have been synthesized and characterized. By optimizing the weight ratio of graphene nanoplatelets (GNPs), the synthesized nanocomposites have been identified as an excellent material for electrochemical capacitors with outstanding electrochemical capacitance (314 Fg¯¹ at 0. 5 Ag¯¹), high rate performance, and long-standing cyclic stability (77. 6% retention). The enhanced electrochemical performance might be adduced to the improved electrode/electrolyte charge transfer interface and conducting nature of GNPs. Besides, (ZF)(GNPs) nanocomposites exhibit outstanding visible light driven photocatalytic efficiency for the removal of methylene blue (MB) dye in water i. e. , 97. 46% of the MB is degraded in 70 min, which can be primarily ascribed to the enhanced photo Fenton reaction, effective electron-hole (e/h) separation and strong interfacial coupling between ZnFe₂O₄ nanoparticles (ZF NPs) and GNPs. Our results offer new insights into multifunctional nanocomposites for the electrochemical energy storage and treatment of polluted wastewater.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Subject:	Nanocomposites ; Electrochemical properties ; Photocatalysis ; Graphene nanoplatelets ; Zn ferrite
Published in:	Journal of Physics and Chemistry of Solids, Vol. 140 (May 2020) , art. 109333, ISSN 0022-3697

DOI: 10.1016/j.jpcs.2020.109333

Preprint 51 p, 1.9 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles