Heavy metal ions removal by nano-sized spherical polymer brushes

被引：10
作者：
Chen, Qing-chuan [1 ]
Wang, Jie [1 ]
Chen, Kai-min [2 ]
Zhang, Rui [1 ]
Li, Li [1 ]
Guo, Xu-hong [1 ]
机构：
[1] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[2] Shanghai Jiao Tong Univ, Med X Res Inst, Shanghai 200030, Peoples R China
来源：
CHINESE JOURNAL OF POLYMER SCIENCE | 2014年 / 32卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Nano-sized spherical polymer brushes; Photo-emulsion polymerization; Heavy metal ions; ADSORPTION; MICROGELS; EXCHANGE; SURFACE; CATIONS; SILICA; HG2+;
D O I：
10.1007/s10118-014-1398-9
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Nano-sized spherical polymer brushes (SPBs) consisting of both a polystyrene (PS) core and a brush shell of poly(acrylic acid) (PAA), poly(N-acrylcysteamine) (PSH), or poly(N-acrylcysteamine-co-acrylic acid) (P(SH-co-AA)), were prepared by photo-emulsion polymerization. The core-shell structure was observed by dynamic light scattering and transmission electron microscopy. Due to the strengthened Donnan effect, the PAA brush can adsorb heavy metal ions. Effects of the contact time, thickness of PAA brush and pH value on the adsorption results were investigated. Due to the coordination between the mercapto groups and heavy metal ions as well as the electrostatic interactions, SPBs with mercapto groups are capable to remove heavy metal ions selectively from aqueous solutions. The order of adsorption capacity of the heavy metal ions by SPBs with mercapto groups is: Hg2+ a parts per thousand Au3+ > Pb2+ > Cu2+ > Ni2+. The adsorbed heavy metal ions can be eluted from SPB by aqueous HCl solution, and the SPBs can be recovered. After three regenerations the recovered SPBs still maintain their adsorption capacity.
引用
收藏
页码：432 / 438
页数：7
相关论文
共 19 条
[1]   Mercury(II) ion adsorption behavior in thiol-functionalized mesoporous silica microspheres [J].
Bibby, A ;
Mercier, L .
CHEMISTRY OF MATERIALS, 2002, 14 (04) :1591-1597
[2]   Functionalized silica for heavy metal ions adsorption [J].
Bois, L ;
Bonhommé, A ;
Ribes, A ;
Pais, B ;
Raffin, G ;
Tessier, F .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2003, 221 (1-3) :221-230
[3]   A review of mercury in Lake Victoria, East Africa: Implications for human and ecosystem health [J].
Campbell, LM ;
Dixon, DG ;
Hecky, RE .
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART B-CRITICAL REVIEWS, 2003, 6 (04) :325-356
[4]   Synthesis of thiol-functionalized spent grain as a novel adsorbent for divalent metal ions [J].
Chai, Liyuan ;
Li, Qingzhu ;
Zhu, Yonghua ;
Zhang, Zhiyuan ;
Wang, Qingwei ;
Wang, Yunyan ;
Yang, Zhihui .
BIORESOURCE TECHNOLOGY, 2010, 101 (15) :6269-6272
[5]   Selective removal of the heavy metal ions from waters and industrial wastewaters by ion-exchange method [J].
Dabrowski, A ;
Hubicki, Z ;
Podkoscielny, P ;
Robens, E .
CHEMOSPHERE, 2004, 56 (02) :91-106
[6]   Spherical polyelectrolyte brushes: Comparison between annealed and quenched brushes [J].
Guo, X ;
Ballauff, M .
PHYSICAL REVIEW E, 2001, 64 (05) :9
[7]   Synthesis of functionalized porous silicas via templating method as heavy metal ion adsorbents: the introduction of surface hydrophilicity onto the surface of adsorbents [J].
Lee, B ;
Kim, Y ;
Lee, H ;
Yi, J .
MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 50 (01) :77-90
[8]   A new class of hybrid mesoporous materials with functionalized organic monolayers for selective adsorption of heavy metal ions [J].
Liu, AM ;
Hidajat, K ;
Kawi, S ;
Zhao, DY .
CHEMICAL COMMUNICATIONS, 2000, (13) :1145-1146
[9]   Blue-to-Red Colorimetric Sensing Strategy for Hg2+ and Ag+ via Redox-Regulated Surface Chemistry of Gold Nanoparticles [J].
Lou, Tingting ;
Chen, Zhaopeng ;
Wang, Yunqing ;
Chen, Lingxin .
ACS APPLIED MATERIALS & INTERFACES, 2011, 3 (05) :1568-1573
[10]   Metal bioremediation through growing cells [J].
Malik, A .
ENVIRONMENT INTERNATIONAL, 2004, 30 (02) :261-278
12