Preparation of Cobalt(Ⅱ) Ion Imprinted Silica Gel Sorbents by Surface Imprinting Technique and Its Adsorption Properties

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (12): 2902.

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Preparation of Cobalt(Ⅱ) Ion Imprinted Silica Gel Sorbents by Surface Imprinting Technique and Its Adsorption Properties

FAN Hong-Tao^1,2, SUI Dian-Peng¹, ZHAO Li-Xing¹, REN Ze-Yan¹, YUAN Zi-Yun¹, ZHOU Qin¹, SUN Ting^1*

1. Department of Chemistry, Northeastern University, Shenyang 110004, China;
2. College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China

Received:2011-03-10 Revised:2011-06-07 Online:2011-12-10 Published:2011-11-25
Contact: SUN Ting E-mail:sun1th@163.com
Supported by:
国家青年科学基金(批准号: 21107076)和辽宁省博士科研启动基金(批准号: 20111048)资助.

Abstract

Abstract: A Co(Ⅱ) ion imprinted silica gel sorbent was prepared by surface imprinting technique using Co(Ⅱ) as the template, 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane as the functional monomer, silica gel as the support, and epichlorohydrin as the crosslinking agent, and was characterized by Fourier transform infrared(FTIR) spectra, scanning electron microscopy(SEM) and thermogravimetric analysis-differential thermal analysis(TG-DTA). The adsorption property and selective recognition ability of Co(Ⅱ) ion imprinted silica gel sorbent were studied by equilibrium\|adsorption method. The results showed that the maximum static adsorption capacity of ion imprinted and non-imprinted silica gel sorbent were 35.2 and 6.5 mg/g, respectively. The experimental data followed the Langmuir adsorption model. The adsorption equilibrium could be reached in 20 min. There was no influence of pH values on adsorption capacity of ion imprinted silica gel sorbent in the range of 3.9—7.8. Co(Ⅱ) ion imprinted silica gel sorbent could be used repeatedly and indicated high selectivitys even in the presence of the other metal ions.

Key words: Cobalt, 3-[2-(2-Aminoethylamino)ethylamino]propyl-trimethoxysilane, Adsorption, Ion imprinted silica gel

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FAN Hong-Tao, SUI Dian-Peng, ZHAO Li-Xing, REN Ze-Yan, YUAN Zi-Yun, ZHOU Qin, SUN Ting*. Preparation of Cobalt(Ⅱ) Ion Imprinted Silica Gel Sorbents by Surface Imprinting Technique and Its Adsorption Properties[J]. Chem. J. Chinese Universities, 2011, 32(12): 2902.

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Preparation of Cobalt(Ⅱ) Ion Imprinted Silica Gel Sorbents by Surface Imprinting Technique and Its Adsorption Properties

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