Magnetic Graphene Nanoplatelet Composites toward Arsenic Removal

被引：67

作者：

Zhu, Jiahua ^{[1
]}

Sadu, Rakesh ^{[1
]}

Wei, Suying ^{[2
]}

Chen, Daniel H. ^{[1
]}

Haldolaarachchige, Neel ^{[3
]}

Luo, Zhiping ^{[4
,5
]}

Gomes, J. A. ^{[1
]}

Young, David P. ^{[3
]}

Guo, Zhanhu ^{[1
]}

机构：

[1] Lamar Univ, ICL, Dan F Smith Dept Chem Engn, Beaumont, TX 77710 USA

[2] Lamar Univ, Dept Chem & Biochem, Beaumont, TX 77710 USA

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[4] Texas A&M Univ, Microscopy & Imaging Ctr, College Stn, TX 77843 USA

[5] Texas A&M Univ, Mat Sci & Engn Program, College Stn, TX 77843 USA

来源：

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2012年 / 1卷 / 01期

基金：

美国国家科学基金会;

关键词：

DRINKING-WATER; SURFACE COMPLEXATION; IRON PARTICLES; GROUNDWATER; ADSORPTION; NANOPARTICLES; CONTAMINATION; KINETICS; NANOCOMPOSITES; FERRIHYDRITE;

D O I：

10.1149/2.010201jss

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 (similar to 1 mg/g). The results show a nearly complete As(III) removal within 1 ppb. (C) 2012 The Electrochemical Society. All rights reserved.

引用

页码：M1 / M5

页数：5

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