One-step in situ fabrication of a granular semi-IPN hydrogel based on chitosan and gelatin for fast and efficient adsorption of Cu2+ ion

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

	One-step in situ fabrication of a granular semi-IPN hydrogel based on chitosan and gelatin for fast and efficient adsorption of Cu2+ ion
	Wang WB(王文波)1 ; Huang DJ(黄大建)1,2 ; Kang YR(康玉茹)1 ; Wang AQ(王爱勤)1
刊名	Colloids and Surfaces B: Biointerfaces
	2013
卷号	106 页码:51-59
关键词	Chitosan Gelatin Granular semi-IPN hydrogel Heavy metal Adsorption
ISSN号	0927-7765
通讯作者	王爱勤
英文摘要	The novel granular semi-IPN hydrogels were in situ prepared in an aqueous solution by the free-radical grafting and crosslinking reactions among chitosan (CTS), acrylic acid (AA), gelatin (GE) and N,N′-methylene-bis-acrylamide. The FTIR spectra and elemental analysis confirmed that the AA monomers were grafted onto CTS backbone, and the GE macromolecular chains interpenetrated through the CTS-g-PAA network. The hydrogels are granular, which are composed of numerous micro-spheres according to the scanning electron microscope observations. The gel strength, adsorption, reuse and recovery properties of the hydrogels for Cu²⁺ ion were systematically investigated. The results indicate the hydrogel with 2 wt% GE has the highest adsorption capacity of 261.08 mg/g with the recovery ratio of 95.2%. And the incorporation of 10 wt% GE enhanced the storage modulus by 103.4% (ω = 100 rad/s) and 115.1% (ω = 0.1 rad/s), and the adsorption rate by 5.67%. Moreover, the adsorption capacity of the hydrogel is still as high as 153.9 mg/g, after five cycles of adsorption–desorption. It was found that the ion-exchange and complexation interactions between the functional groups (—COO⁻ and —NH₂) of the hydrogels and Cu²⁺ ion are the predominant adsorption mechanisms.
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 (Nos. 51003112;21107116)
语种	英语
WOS记录号	WOS:000317441800007
公开日期	2013-12-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/4253]
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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang WB,Huang DJ,Kang YR,et al. One-step in situ fabrication of a granular semi-IPN hydrogel based on chitosan and gelatin for fast and efficient adsorption of Cu2+ ion[J]. Colloids and Surfaces B: Biointerfaces,2013,106:51-59.
APA	Wang WB,Huang DJ,Kang YR,&Wang AQ.(2013).One-step in situ fabrication of a granular semi-IPN hydrogel based on chitosan and gelatin for fast and efficient adsorption of Cu2+ ion.Colloids and Surfaces B: Biointerfaces,106,51-59.
MLA	Wang WB,et al."One-step in situ fabrication of a granular semi-IPN hydrogel based on chitosan and gelatin for fast and efficient adsorption of Cu2+ ion".Colloids and Surfaces B: Biointerfaces 106(2013):51-59.