Preparation of a polyelectrolyte-coated magnetic attapulgite composite for the adsorption of precious metals

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	Preparation of a polyelectrolyte-coated magnetic attapulgite composite for the adsorption of precious metals
	Mu B(牟斌)1 ; Kang YR(康玉茹)1,2 ; Wang AQ(王爱勤)1,2
刊名	Journal of Materials Chemistry A
	2013
卷号	1 期号:15 页码:4804-4811
ISSN号	2050-7488
通讯作者	王爱勤
英文摘要	By the layer-by-layer self-assembly of chitosan and cysteine modified b-cyclodextrin on the surface of Fe₃O₄ nanoparticle-decorated attapulgite, the polyelectrolyte-coated magnetic attapulgite composite (Fe₃O₄/ ATP@(CS/Cys-b-CD)₈) was prepared for the adsorption of precious metals. The as-synthesized Fe₃O₄/ATP@(CS/Cys-b-CD)₈ composite was characterized by zeta potential measurements, Fourier transform infrared spectroscopy, X-ray diffraction and vibrating sample magnetometry. The Fe₃O₄/ATP@(CS/Cys-b-CD)₈ composite has an adsorption yield of about 90% for Ag⁺, 90% for Pd²⁺ and 60% for Pt⁴⁺. Moreover, it was found that the adsorption of Ag⁺ and Pd²⁺ was preferential to that of Pt⁴⁺. The results of X-ray photoelectron spectroscopy indicated that the precious metals accept electrons provided by the N, O or S atoms of the Fe₃O₄/ATP@(CS/Cys-b-CD)₈ composite during the process of adsorption. Therefore, the Fe₃O₄/ATP@(CS/Cys-b-CD)₈ composite is a promising recyclable and low-cost adsorbent for the adsorption of trace precious metal ions.
学科主题	功能复合材料
收录类别	SCI
资助信息	the National Natural Science Foundation of China (no. 20877077);“863” Project of the Ministry of Science and Technology, P. R. China (no. 2013AA031403)
语种	英语
WOS记录号	WOS:000316282800025
公开日期	2013-12-03
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/4290]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Huaiyin Inst Technol, Key Lab Attapulgite Sci & Appl Technol Jiangsu Pr, Huaian 223003, Peoples R China
推荐引用方式 GB/T 7714	Mu B,Kang YR,Wang AQ. Preparation of a polyelectrolyte-coated magnetic attapulgite composite for the adsorption of precious metals[J]. Journal of Materials Chemistry A,2013,1(15):4804-4811.
APA	Mu B,Kang YR,&Wang AQ.(2013).Preparation of a polyelectrolyte-coated magnetic attapulgite composite for the adsorption of precious metals.Journal of Materials Chemistry A,1(15),4804-4811.
MLA	Mu B,et al."Preparation of a polyelectrolyte-coated magnetic attapulgite composite for the adsorption of precious metals".Journal of Materials Chemistry A 1.15(2013):4804-4811.