Novel negatively charged hybrids. 1. copolymers: Preparation and adsorption properties

被引：24

作者：

Liu, Junsheng ^{[1
,2
]}

Wang, Xiaohu ^{[2
]}

Xu, Tongwen ^{[1
]}

Shao, Guoquan ^{[2
]}

机构：

[1] Univ Sci & Technol China, Lab Funct Membranes, Sch Chem & Mat Sci, Hefei 230026, Peoples R China

[2] Hefei Univ, Key Lab Membrane Mat & Proc, Dept Chem & Mat Sci Engn, Hefei 230022, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2009年 / 66卷 / 01期

关键词：

Negatively charged hybrid copolymers; Charged hybrid copolymers; Adsorption; Free radical polymerization; Lagergren kinetic model; MEMBRANE PREPARATION; EXCHANGE MEMBRANE; SILICA; GEL; METAL; POLYMERIZATION; EQUILIBRIUM; AS(III);

D O I：

10.1016/j.seppur.2008.11.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A series of novel negatively charged hybrid copolymers were prepared via free radical polymerization and sol-gel process using gamma-methacryloxypropyl trimethoxy silane (MAPTMS) and acrylic acid (AA) monomers. The copolymers obtained can keep thermally stable up to 420 degrees C. Moreover, a more stable molecular structure and desirable negatively charged properties can be acquired by adjusting silica content and AA content, respectively. The adsorption behaviors of the copolymers were conducted by the aqueous solution containing Cu2+ and Pb2+ ions. It is indicated that the adsorption followed Lagergren second-order kinetic model and Freundlich isotherm model, suggesting that the adsorption process can be ascribed to chemosorption. According to the adsorptional capacity, the obtained copolymers can be potentially applied in the separation and recovery of heavy metal ions from waste chemicals and contaminated water. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：135 / 142

页数：8

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