Adsorption and Recognition Properties of Ionic Imprinted Polyamine IIP-PEI/SiO2 Towards Pb2+ Ion

被引：13

作者：

An, Fuqiang ^{[1
]}

Gao, Baojiao ^{[1
]}

Feng, Xiaoqin ^{[1
]}

机构：

[1] N Univ China, Dept Chem Engn, Taiyuan 030051, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 112卷 / 04期

关键词：

molecular imprinting; molecular recognition; adsorption; silicas; surfaces; SILICA; EXTRACTION; POLYMER; SURFACES; WATER; RESIN;

D O I：

10.1002/app.29751

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this article, an ionic imprinted polyamine (IIP) grafted on the surface of silica gel was prepared through a new surface imprinting approach. The adsorption and recognition properties of IIP-PEI/SiO2 for Pb2+ ion were studied in detail using batch rebinding studies. The experimental results showed that the IIP-PEI/SiO2 had high affinity, specificity, and selectivity for the template ion. The isothermal adsorption data was fit Using the Langmuir equation. The adsorption was typical of chemisorption of a monolayer. The selectivity coefficients relative to Zn2+ and Cr3+ were 32.43 and 68.36, respectively. pH and temperature Were found to have a strong influence Oil the adsorption properties. The adsorption amount increases with rising of temperature and the value of Delta H is plus. The adsorption of Pb2+ by IIP-PEI/SiO2 was spontaneous and endothermic. At pH = 7, the adsorption capacity of the polymers was the highest. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 2241-2246, 2009

引用

页码：2241 / 2246

页数：6

共 18 条

[1] Molecularly imprinted polymers for drug delivery [J].