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Synthesis of carbon-coated magnetic nanocomposite (Fe3O4@C) and its application for sulfonamide antibiotics removal from water
Bao, Xiaolei; Qiang, Zhimin; Chang, Jih-Hsing; Ben, Weiwei; Qu, Jiuhui
2014
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
Volume26Issue:5Pages:962-969
AbstractThe occurrence of antibiotics in the environment has recently raised serious concerns regarding their potential threat to human health and aquatic ecosystem! A new magnetic nanocomposite, Fe3O4@C (Fe3O4 coated with carbon), was synthesized, characterized, and then applied to remove five commonly-used sulfonamides (SAs) from water. Due to its combinational merits of the outer functionalized carbon shell and the inner magnetite core, Fe3O4@C exhibited a high adsorption affinity for selected SAs and a fast magnetic separability. The adsorption kinetics of SAs on Fe3O4@C could be expressed by the pseudo second-order model. The adsorption isotherms were fitted well with the Dual-mode model, revealing that the adsorption process consisted of an initial partitioning stage and a subsequent hole-filling stage. Solution pH exerted a strong impact on the adsorption process with the maximum removal efficiencies (74% to 96%) obtained at pH 4.8 for all selected SAs. Electrostatic force and hydrogen bonding were two major driving forces for adsorption, and electron-donor-acceptor interactions may also make a certain contribution. Because the synthesized Fe3O4@C showed comprehensive advantages of high adsorptivity, fast magnetic separability, and prominent reusability, it has potential applications in water treatment.
Department环境水质学国家重点实验室
KeywordMagnetic Nanocomposite Carbon Shell Sulfonamides Adsorption Water
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/9607
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Bao, Xiaolei,Qiang, Zhimin,Chang, Jih-Hsing,et al. Synthesis of carbon-coated magnetic nanocomposite (Fe3O4@C) and its application for sulfonamide antibiotics removal from water[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(5):962-969.
APA Bao, Xiaolei,Qiang, Zhimin,Chang, Jih-Hsing,Ben, Weiwei,&Qu, Jiuhui.(2014).Synthesis of carbon-coated magnetic nanocomposite (Fe3O4@C) and its application for sulfonamide antibiotics removal from water.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(5),962-969.
MLA Bao, Xiaolei,et al."Synthesis of carbon-coated magnetic nanocomposite (Fe3O4@C) and its application for sulfonamide antibiotics removal from water".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.5(2014):962-969.
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