Microwave synthesis of magnetically separable ZnFe2O4-reduced graphene oxide for wastewater treatment
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 waste...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34523/1/Microwave%20synthesis%20of%20magnetically%20separable%20ZnFe2O4-reduced%20graphene%20oxide%20for%20wastewater%20treatment.pdf http://psasir.upm.edu.my/id/eprint/34523/ http://www.sciencedirect.com/science/article/pii/S0272884213016404 |
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| Summary: | 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. |
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