Reduced graphene oxide/iron nanoparticles used for the removal of Pb (II) by one step green synthesis.

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ID: 54358
2019
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Ranked #29 of 128 articles by views in Journal of colloid and interface science

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Abstract
While nanomaterials are increasingly being proposed for contaminant remediation, a major challenge is how to develop high removal functionality while maintaining low cost and environmental friendliness. In this study, a hybrid reduced graphene oxide/iron nanoparticle (rGO/Fe NPs) was prepared via the in situ reduction of GO and FeCl by eucalyptus leaf extract in one-pot. The obtained rGO/Fe NPs could rapidly remove 72.7% of Pb(II) from aqueous solution in 10 mins and remove up to the maximum removal efficiency of 82.4%. Electron microscopy, XPS and BET showed that the irregular FeO nanoparticles, sized between 20 and 40 nm, were disorderly dispersed on rGO sheets, which constituted a mesoporous material. FTIR and XRD indicated that the surface of rGO/Fe NPs was capped by many active organic constituents from the eucalyptus leaf extract. rGO/Fe NPs also showed a high selectivity for Pb(II) with minimal interference from either calcium or magnesium ions in the solution. Finally, GC-MS separated 13 significant active organic constituents from the eucalyptus leaf extract that possibly contributed to the reduction of rGO/Fe NPs. Overall, eucalyptus leaf extracts, acted efficiently as green reducing agents and impacted reactivity of the final material by determining the components and surface properties of rGO/Fe NPs.
Reference Key
xiao2019reducedjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Xiaofeng Xiao, Qinging Wang, Gary Owens, Federica Chiellini, Zuliang Chen
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Journal Journal of colloid and interface science
Year 2019
DOI
S0021-9797(19)31097-5
URL
Keywords
Reduced graphene oxide lead eucalyptus leaf extracts iron nanoparticles rgo/fe nps

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