Amphiphilic PMMA/PEI core-shell nanoparticles as polymeric adsorbents to remove heavy metal pollutants

被引：57
作者：
Wu, Aihua [1 ,2 ]
Jia, Jin [1 ]
Luan, Shengji [1 ,2 ]
机构：
[1] Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China
[2] PKU HKUST Shenzhen HongKong Inst, Shenzhen Key Lab Environm Simulat & Pollut Contro, Shenzhen 518057, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 384卷 / 1-3期
关键词：
Core-shell nanoparticles; Adsorption; Copper (II) ions; GENE DELIVERY; WATER-PURIFICATION; AQUEOUS-SOLUTION; CHITOSAN NANOPARTICLES; SOLUBLE POLYMERS; WASTE-WATER; IN-VIVO; IONS; ADSORPTION; ULTRAFILTRATION;
D O I：
10.1016/j.colsurfa.2011.03.060
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Amphiphilic nanoparticles with poly(methyl methacrylate) (PMMA) cores and poly(ethyleneimine) (PEI) shells were successfully synthesized through a one-step emulsifier-free polymerization method. The morphologies of PMMA/PEI nanoparticles were spherical in shape with uniform size distribution and well-defined core-shell nanostructure illustrated by field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). PMMA/PEI core-shell nanoparticles were applied as novel polymeric adsorbents to remove heavy metal pollutants. In present work, copper (II) ions were selected as the target pollutants to evaluate these nanoparticles adsorption capability. It was investigated by varying solution pH, weight ratio of nanoparticles to copper (II) ions, adsorption time and adsorption temperature, respectively. The maximum copper (II) ions adsorbed onto PMMA/PEI core-shell nanoparticles was 14 mg/g obtained under simple and fast experimental conditions, indicating these nanoparticles can be used as effective and practical polymeric adsorbents. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：180 / 185
页数：6
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