Adsorption and magnetic removal of neutral red dye from aqueous solution using Fe3O4 hollow nanospheres

doi:10.1016/j.jhazmat.2010.05.119

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	Adsorption and magnetic removal of neutral red dye from aqueous solution using Fe3O4 hollow nanospheres
	Iram, Mahmood 1; Guo, Chen 1; Guan, Yueping 2; Ishfaq, Ahmad 3; Liu, Huizhou 1
	2010-09-15
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
卷号	181 期号:1-3 页码:1039-1050
摘要	Fe3O4 hollow nanospheres were prepared via a simple one-pot template-free hydrothermal method and were fully characterized. These magnetic spheres have been investigated for application as an adsorbant for the removal of dye contaminants from water. Because of the high specific surface area, nano-scale particle size, and hollow porous material, Fe3O4 hollow spheres showed favorable adsorption behavior for Neutral red. Factors affecting adsorption, such as, initial dye concentration, pH and contact time were evaluated. Langmuir and the Freundlich adsorption isotherms were selected to explicate the interaction of the dye and magnetic adsorbant. The characteristic parameters for each isotherm have been determined. The overall trend followed an increase of the sorption capacity with increasing dye concentration with a maximum of 90% dye removal. The monolayer adsorption capacity of magnetic hollow spheres (0.05 g) for NR in the concentration range studied, as calculated from the Langmuir isotherm model at 25 degrees C and pH 6, was found to be 105 mg g(-1). Adsorption kinetic followed pseudo-second-order reaction kinetics. Thermodynamic study showed that the adsorption processes are spontaneous and endothermic. The combination of the superior adsorption and the magnetic properties of Fe3O4 nanospheres can be useful as a powerful separation tool to deal with environmental pollution. (C) 2010 Elsevier B.V. All rights reserved.
关键词	Fe3O4 hollow nanospheres Adsorption Neutral red Color removal Adsorption isotherms
DOI	10.1016/j.jhazmat.2010.05.119
语种	英语
资助项目	National Natural Science Foundation of China[20676137] ; National Natural Science Foundation of China[20490200] ; National Natural Science Foundation of China[20876158] ; National High Technology Research and Development Program of China[2007AA03Z315]
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS记录号	WOS:000280601300137
出版者	ELSEVIER SCIENCE BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/10047
专题	中国科学院数学与系统科学研究院
通讯作者	Iram, Mahmood
作者单位	1.Chinese Acad Sci, Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Appl Math, Acad Math & Syst Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Iram, Mahmood,Guo, Chen,Guan, Yueping,et al. Adsorption and magnetic removal of neutral red dye from aqueous solution using Fe3O4 hollow nanospheres[J]. JOURNAL OF HAZARDOUS MATERIALS,2010,181(1-3):1039-1050.
APA	Iram, Mahmood,Guo, Chen,Guan, Yueping,Ishfaq, Ahmad,&Liu, Huizhou.(2010).Adsorption and magnetic removal of neutral red dye from aqueous solution using Fe3O4 hollow nanospheres.JOURNAL OF HAZARDOUS MATERIALS,181(1-3),1039-1050.
MLA	Iram, Mahmood,et al."Adsorption and magnetic removal of neutral red dye from aqueous solution using Fe3O4 hollow nanospheres".JOURNAL OF HAZARDOUS MATERIALS 181.1-3(2010):1039-1050.