Adsorption Behavior of Hg() on the Hydroxyl-Terminated-Polyamidoamine-Grafted Magnetic Graphene Oxide

doi:10.11896/cldb.201902007

	Adsorption Behavior of Hg() on the Hydroxyl-Terminated-Polyamidoamine-Grafted Magnetic Graphene Oxide
	Ma, Yingxia; Jin, Pengsheng; Shao, Wenjie; Kou, Yalan; La, Peiqing
	2019-01-25
发表期刊	Cailiao Daobao/Materials Review
ISSN	1005023X
卷号	33 期号:1 页码:234-239
摘要	In recent years, heavy metal pollution of industrial wastewater has become a serious threat to human health, living resources and ecological systems even at trace concentrations due to their non-biodegradability, high toxicity and bioaccumulation. Hg() has been regarded as one of the most toxic and dangerous heavy metal ions, which is seriously harmful to renal and nervous systems. In our previous work, a series of magnetic graphene oxide samples grafted with polyamidoamine dendrimers (MGO-PAMAM) were prepared, which was expected to remove Hg() from aqueous solution. In this study, the terminal groups of those MGO-PAMAM were modified using chlorohydrin, and consequently the corresponding magnetic graphene oxide grafted with hydroxyl-terminated polyamidoamine dendrimers (MGO-PAMAM-OH) were fabricated. The obtained samples were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetry analysis (TG), vibrating sample magnetometer (VSM) and X-ray photoelectron spectroscopy (XPS). The adsorption performances of the samples for Hg() were studied by batch experiments. The effects of hydroxyl-terminated PAMAM generations, Hg() initial concentration, solution pH value, and circumstance temperature on the adsorption performances of the samples for Hg() were investigated in detail. The pseudo-first-order and pseudo-second-order kinetics rate equations were used to analyze the adsorption kinetics. The Langmuir isothermal and Freundlich isothermal adsorption models were employed to study the specific adsorption equilibrium. The results confirmed the successful synthesis of the MGO-PAMAM-OH samples, among which the 3.0-generation-hydroxyl-terminated-polyamidoamine-grafted magnetic graphene oxide (MGO-PAMAM-OH-G3.0) exhibits the most satisfactory adsorption-performance for Hg(), with a maximum adsorption capacity of 129.98 mg•g-1. The adsorption of Hg() on MGO-PAMAM-OH-G3.0 coincides well with pseudo-second-order kinetics rate equation, and the adsorption equilibrium is in accord with Langmuir isothermal adsorption model, demonstrating a monolayer chemisorption beha-vior of Hg() on homogeneous surface. In addition, the partial reduction of Hg() ions to Hg() by MGO-PAMAM-OH-G3.0 was observed in the adsorption process. Moreover, MGO-PAMAM-OH-G3.0 is superparamagnetic and the saturation magnetization can attain the requirement of solid-liquid separation. © 2019,Materials Review Magazine. All right reserved.
关键词	Adsorption isotherms Biochemistry Biodegradability Dendrimers Dyes Fourier transform infrared spectroscopy Grafting (chemical) Graphene Health risks Heavy metals High resolution transmission electron microscopy Kinetics Metal ions Monolayers Pollution Saturation magnetization Thermogravimetric analysis Trace elements X ray photoelectron spectroscopy Chlorohydrin Heavy metal pollution Polyamidoamine dendrimers Polyamidoamines Pseudo second order kinetics Solid liquid separation Thermogravimetry analysis Vibrating sample magnetometer
DOI	10.11896/cldb.201902007
收录类别	EI
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
EI入藏号	20192006915145
EI主题词	Adsorption
EI分类号	461.7 Health Care - 531 Metallurgy and Metallography - 531.1 Metallurgy - 701.2 Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 761 Nanotechnology - 801 Chemistry - 801.2 Biochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally - 931 Classical Physics ; Quantum Theory ; Relativity
来源库	Compendex
分类代码	461.7 Health Care - 531 Metallurgy and Metallography - 531.1 Metallurgy - 701.2 Magnetism: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 761 Nanotechnology - 801 Chemistry - 801.2 Biochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931 Classical Physics; Quantum Theory; Relativity
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/113826
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Materials Science & Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Ma, Yingxia,Jin, Pengsheng,Shao, Wenjie,et al. Adsorption Behavior of Hg() on the Hydroxyl-Terminated-Polyamidoamine-Grafted Magnetic Graphene Oxide[J]. Cailiao Daobao/Materials Review,2019,33(1):234-239.
APA	Ma, Yingxia,Jin, Pengsheng,Shao, Wenjie,Kou, Yalan,&La, Peiqing.(2019).Adsorption Behavior of Hg() on the Hydroxyl-Terminated-Polyamidoamine-Grafted Magnetic Graphene Oxide.Cailiao Daobao/Materials Review,33(1),234-239.
MLA	Ma, Yingxia,et al."Adsorption Behavior of Hg() on the Hydroxyl-Terminated-Polyamidoamine-Grafted Magnetic Graphene Oxide".Cailiao Daobao/Materials Review 33.1(2019):234-239.