Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 5, Pages 7057-7065Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.12.037
Keywords
Graphene; Nanoparticles; Microwave; Photocatalysis; Wastewater treatment
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Funding
- L'Oreal Malaysia For Women in Science Fellowship [6375900-10501]
- Ministry of Higher Education [UM.S/P/HIR/MOHE/SC/21]
- UM Research Grant PRPUM [CG002-2013]
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A magnetically separable ZnFe2O4-reduced graphene oxide (rGO) nano-composite was synthesised via a microwave method. Field emission scanning electron microscopy images of the nano-composite showed a uniform dispersion of nanoparticles on the rGO sheets. The performance of the nano-composite in wastewater treatment was assessed by observing the decomposition of methylene blue. The nano-composite showed excellent bifunctionality, i.e. adsorption and photocatalytic degradation of methylene blue, for up to five cycles of water treatment when illuminated with light from a halogen bulb. In contrast, water treatment with the nano-composite without illumination and the illuminated rGO, with no decoration of nanoparticles, diminished significantly after the first treatment. The reclamation of the ZnFe2O4-rGO nano-composite from treated water could be easily achieved by applying an external magnetic field. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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