Magnetic graphene nanoplatelet composites toward arsenic removal

Jiahua Zhu; Rakesh Sadu; Suying Wei; Daniel H. Chen; Neel Haldolaarachchige; Zhiping Luo; J. A. Gomes; David P. Young; Zhanhu Guo

doi:10.1149/2.010201jss

Magnetic graphene nanoplatelet composites toward arsenic removal

Jiahua Zhu, Rakesh Sadu, Suying Wei, Daniel H. Chen, Neel Haldolaarachchige, Zhiping Luo, J. A. Gomes, David P. Young, Zhanhu Guo

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

Abstract

Magnetic graphene nanoplatelet composites (MGNCs) decorated with core-shell Fe-Fe2O3 nanoparticles (NPs) have been synthesized using a facile one-pot thermal decomposition method. The graphene nanoplatelets (GNPs) decorated with uniformly dispersed NPs are observed to exhibit a strong magnetization and can be magnetically separated from the liquid mixture by a permanent magnet. These MGNCs demonstrate an effective and efficient adsorption of arsenic(III) in the polluted water due to the increased adsorption sites in the presence of magnetic NPs. The adsorption behavior is well fitted with both Langmuir and Freundlich models, which show a significantly higher adsorption capacity (11.34 mg/g) than the other adsorption values reported on the conventional iron oxide based adsorbents (∼1 mg/g). The results show a nearly complete As(III) removal within 1 ppb.

Original language	English
Pages (from-to)	M1-M5
Journal	ECS Journal of Solid State Science and Technology
Volume	1
Issue number	1
DOIs	https://doi.org/10.1149/2.010201jss
State	Published - 2012
Externally published	Yes

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title = "Magnetic graphene nanoplatelet composites toward arsenic removal",

abstract = "Magnetic graphene nanoplatelet composites (MGNCs) decorated with core-shell Fe-Fe2O3 nanoparticles (NPs) have been synthesized using a facile one-pot thermal decomposition method. The graphene nanoplatelets (GNPs) decorated with uniformly dispersed NPs are observed to exhibit a strong magnetization and can be magnetically separated from the liquid mixture by a permanent magnet. These MGNCs demonstrate an effective and efficient adsorption of arsenic(III) in the polluted water due to the increased adsorption sites in the presence of magnetic NPs. The adsorption behavior is well fitted with both Langmuir and Freundlich models, which show a significantly higher adsorption capacity (11.34 mg/g) than the other adsorption values reported on the conventional iron oxide based adsorbents (∼1 mg/g). The results show a nearly complete As(III) removal within 1 ppb.",

author = "Jiahua Zhu and Rakesh Sadu and Suying Wei and Chen, {Daniel H.} and Neel Haldolaarachchige and Zhiping Luo and Gomes, {J. A.} and Young, {David P.} and Zhanhu Guo",

year = "2012",

doi = "10.1149/2.010201jss",

language = "英语",

volume = "1",

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issn = "2162-8769",

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TY - JOUR

T1 - Magnetic graphene nanoplatelet composites toward arsenic removal

AU - Zhu, Jiahua

AU - Sadu, Rakesh

AU - Wei, Suying

AU - Chen, Daniel H.

AU - Haldolaarachchige, Neel

AU - Luo, Zhiping

AU - Gomes, J. A.

AU - Young, David P.

AU - Guo, Zhanhu

PY - 2012

Y1 - 2012

N2 - Magnetic graphene nanoplatelet composites (MGNCs) decorated with core-shell Fe-Fe2O3 nanoparticles (NPs) have been synthesized using a facile one-pot thermal decomposition method. The graphene nanoplatelets (GNPs) decorated with uniformly dispersed NPs are observed to exhibit a strong magnetization and can be magnetically separated from the liquid mixture by a permanent magnet. These MGNCs demonstrate an effective and efficient adsorption of arsenic(III) in the polluted water due to the increased adsorption sites in the presence of magnetic NPs. The adsorption behavior is well fitted with both Langmuir and Freundlich models, which show a significantly higher adsorption capacity (11.34 mg/g) than the other adsorption values reported on the conventional iron oxide based adsorbents (∼1 mg/g). The results show a nearly complete As(III) removal within 1 ppb.

AB - Magnetic graphene nanoplatelet composites (MGNCs) decorated with core-shell Fe-Fe2O3 nanoparticles (NPs) have been synthesized using a facile one-pot thermal decomposition method. The graphene nanoplatelets (GNPs) decorated with uniformly dispersed NPs are observed to exhibit a strong magnetization and can be magnetically separated from the liquid mixture by a permanent magnet. These MGNCs demonstrate an effective and efficient adsorption of arsenic(III) in the polluted water due to the increased adsorption sites in the presence of magnetic NPs. The adsorption behavior is well fitted with both Langmuir and Freundlich models, which show a significantly higher adsorption capacity (11.34 mg/g) than the other adsorption values reported on the conventional iron oxide based adsorbents (∼1 mg/g). The results show a nearly complete As(III) removal within 1 ppb.

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U2 - 10.1149/2.010201jss

DO - 10.1149/2.010201jss

M3 - 文章

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SP - M1-M5

JO - ECS Journal of Solid State Science and Technology

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Magnetic graphene nanoplatelet composites toward arsenic removal

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