Amino and thiol modified magnetic multi-walled carbon nanotubes for the simultaneous removal of lead, zinc, and phenol from aqueous solutions

doi:10.1016/j.apsusc.2016.02.067

	Amino and thiol modified magnetic multi-walled carbon nanotubes for the simultaneous removal of lead, zinc, and phenol from aqueous solutions
	Jiang, Lili 1,2; Li, Shujun 1; Yu, Haitao 3; Zou, Zongshu 2; Hou, Xingang 1; Shen, Fengman 2; Li, Chuantong 1; Yao, Xiayan 1
刊名	APPLIED SURFACE SCIENCE
	2016-04-30
卷号	369 页码:398-413
关键词	Multi-walled nanotube Adsorption Thermodynamics Dynamics
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2016.02.067
英文摘要	The novel functionalization of multi-walled carbon nanotubes (MWCNTs) was synthesized by reacting trimethoxysilylpropanethiol (MPTs), hydrazine, ammonium ferrous sulfate, and ammonium ferric sulfate in sequence as efficient ways to introduce Fe3O4, amino and thiol groups onto the nanotubes sidewalls. The magnetic MWCNTs composite material (N2H4-SH-Fe3O4/o-MWCNTs) was characterized by transmission electron microscopy, field emission scanning electron microscopy, X-ray diffraction, thermo-gravimetric analysis, x-ray photoelectron spectroscopy, Fourier transformation infrared spectroscopy and magnetization curve. The results revealed that MPTs and hydrazine were coated on the surface of N2H4-SH-Fe3O4/o-MWCNTs. A series of batch adsorption experiments were conducted to study the experimental conditions, such as pH, contact time, initial concentrations and temperatures, which affected the adsorption process. The adsorption experiment results showed that the maximum equilibrium adsorption capacity of N2H4-SH-Fe3O4/o-MWCNTs for lead, zinc and phenol was 195.81 mg/g, 169.89 mg/g and 38.97 mg/g at pH 6, respectively. The adsorption isotherm was better fitted by the Freundlich model, and the adsorption kinetics was consistent with pseudo-second order kinetics model. Furthermore, thermodynamic data showed that the adsorption process was spontaneous and exothermic. These results indicated that N2H4-SH-Fe3O4/o-MWCNTs may be promising surface modified materials for removing heavy metal ions and phenol from aqueous solutions. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51304101]
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000374203000052
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33717]
专题	材料科学与工程学院
通讯作者	Jiang, Lili
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Technol, Langongping Rd, Lanzhou 730050, Gansu, Peoples R China 2.Northeastern Univ, Sch Met, 3-11 Wenhua Rd, Shenyang, Liaoning Provin, Peoples R China 3.Lanzhou Univ, Dept Lab Med, Hosp 1, 1 Donggang Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Lili,Li, Shujun,Yu, Haitao,et al. Amino and thiol modified magnetic multi-walled carbon nanotubes for the simultaneous removal of lead, zinc, and phenol from aqueous solutions[J]. APPLIED SURFACE SCIENCE,2016,369:398-413.
APA	Jiang, Lili.,Li, Shujun.,Yu, Haitao.,Zou, Zongshu.,Hou, Xingang.,...&Yao, Xiayan.(2016).Amino and thiol modified magnetic multi-walled carbon nanotubes for the simultaneous removal of lead, zinc, and phenol from aqueous solutions.APPLIED SURFACE SCIENCE,369,398-413.
MLA	Jiang, Lili,et al."Amino and thiol modified magnetic multi-walled carbon nanotubes for the simultaneous removal of lead, zinc, and phenol from aqueous solutions".APPLIED SURFACE SCIENCE 369(2016):398-413.