One-step fabrication in aqueous solution of a granular alginate-based hydrogel for fast and efficient removal of heavy metal ions

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 fabrication in aqueous solution of a granular alginate-based hydrogel for fast and efficient removal of heavy metal ions
	Wang WB(王文波); Kang YR(康玉茹); Wang AQ(王爱勤)
刊名	Journal of Polymer Research
	2013
卷号	20 期号:3 页码:101 (1-10)
关键词	Sodium alginate Granular hydrogel In situ formation Adsorption Heavy metals
ISSN号	1022-9760
通讯作者	王爱勤
英文摘要	Granular alginate-based hydrogels were prepared in situ in an aqueous solution via grafting and crosslinking reactions among sodium alginate (SA), acrylic acid (AA), polyvinylpyrrolidone (PVP), and gelatin (GE). Fourier transform infrared spectra, elemental analysis, and scanning electrical microscopy revealed that AA monomers were grafted onto an SA backbone, and that PVP and GE were present in the hydrogel network as linear interpenetrating components. The grafting polymerization and crosslinking reaction between only SA and AA yielded a bulk gel, but the introduction of PVP and GE into the reaction mixture led to the formation of granular products. Electrostatic and hydrogen-bonding interactions among SA, PAA, PVP, and GE were the main driving forces for the formation of granular products. The adsorption isotherms and adsorption kinetics were evaluated for the adsorption of model heavy-metal ions on one of the hydrogels. The results indicated that the hydrogel has satisfactory adsorption capacities (3.028 mmol/g, Ni²⁺; 3.146 mmol/g, Cu²⁺; 2.911 mmol/g, Zn²⁺; 2.862 mmol/g, Cd²⁺), adsorption rates, and recovery capacities for the target metal ions. In addition, competitive adsorption results suggested that the hydrogel has a stronger affinity for Cu²⁺ ion than for the other ions.
学科主题	功能复合材料
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Polymer Science
研究领域[WOS]	Polymer Science
关键词[WOS]	SWELLING BEHAVIOR ; ACID) HYDROGELS ; ADSORPTION ; COMPOSITES ; POLY(N-VINYLPYRROLIDONE) ; POLYACRYLAMIDE ; NANOCOMPOSITE ; EQUILIBRIUM ; PERFORMANCE ; KINETICS
收录类别	SCI
资助信息	the National Natural Science Foundation of China (nos. 51003112;21107116));the Science and Technology Support Project of Jiangsu Provincial Sci. & Tech. Department (no. BY2010012)
语种	英语
WOS记录号	WOS:000318283500014
公开日期	2013-12-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/4252]
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	Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang WB,Kang YR,Wang AQ. One-step fabrication in aqueous solution of a granular alginate-based hydrogel for fast and efficient removal of heavy metal ions[J]. Journal of Polymer Research,2013,20(3):101 (1-10).
APA	Wang WB,Kang YR,&Wang AQ.(2013).One-step fabrication in aqueous solution of a granular alginate-based hydrogel for fast and efficient removal of heavy metal ions.Journal of Polymer Research,20(3),101 (1-10).
MLA	Wang WB,et al."One-step fabrication in aqueous solution of a granular alginate-based hydrogel for fast and efficient removal of heavy metal ions".Journal of Polymer Research 20.3(2013):101 (1-10).