Effective removal of Pb( ii ) using a graphene@ternary oxides composite as an adsorbent in aqueous media

Lead is a non-biodegradable heavy metal that easily accumulates in the human body, causing anemia, cancer, renal kidney disease, nervous system damage and mental retardation. In this study, a new lead adsorbent of graphene@Fe–Mg–Cu ternary oxide composite was successfully fabricated using a one-spot...

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Bibliographic Details
Published in:New journal of chemistry 2017, Vol.41 (23), p.14627-14634
Main Authors: La, Duong Duc, Thi, Hoai Phuong Nguyen, Nguyen, Tuan Anh, Bhosale, Sheshanath V.
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Anemia
Bioaccumulation
Biodegradability
Copper
Electron microscopes
Electron microscopy
Electrons
Graphene
Heavy metals
Iron
Lead
Magnesium
Nervous system
Oxides
Recyclability
Scanning electron microscopy
Spectrum analysis
Thermal decomposition
X ray photoelectron spectroscopy
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Summary:Lead is a non-biodegradable heavy metal that easily accumulates in the human body, causing anemia, cancer, renal kidney disease, nervous system damage and mental retardation. In this study, a new lead adsorbent of graphene@Fe–Mg–Cu ternary oxide composite was successfully fabricated using a one-spot thermal decomposition approach. The prepared material was fully characterized via scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), electron dispersive spectroscopy (EDS), BET surface area and X-ray photoelectron spectroscopy (XPS). The lead adsorption behaviour of the prepared graphene@Fe–Mg–Cu ternary oxides was studied by batch and column experiments. The adsorption isotherm was described by both the Langmuir and Freundlich models and the sorption kinetics of lead adsorption by the composite was found to be pseudo-second order. The graphene@Fe–Mg–Cu ternary oxides exhibited exceptional and fast adsorption of lead over a wide range of solution pHs with remarkable durability, selectivity, and recyclability, which could make this composite a very promising candidate for effective removal of lead from aqueous solutions.
ISSN:1144-0546
1369-9261
DOI:10.1039/C7NJ03064A