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《Metallurgical Analysis》 2010-02
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Study on adsorption behavior and mechanism of copper(Ⅱ) ion imprinted polymer

WANG Ling-ling,LI Chun-xiang,DENG Yue-hua,YANG Yi-xiong,YAN Yong-sheng(School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China)  
Cu(Ⅱ) ion imprinted polymer particles were prepared by the combination of surface molecular imprinting technique and sol-gel process in acetic acid solution,with Cu(Ⅱ) ion as a template,chitosan(CTS) as functional monomer,and KH-560 as the cross-linker.The configuration of Cu(Ⅱ) ion imprinted polymer and its properties was characterized by FT-IR spectra and UV-spectra.The optimal adsorption conditions,such as acidity,resting time,dosage of sorbent,etc,were investigated by flame atomic adsorption spectroscopy(FAAS).The selectivity of the prepared Cu(Ⅱ) ion imprinted polymer in dilute aqueous solution was examined by inductively coupled plasma atomic emission spectrometry(ICP-AES).The mixed solution consisted of Cd(Ⅱ),Co(Ⅱ),Cu(Ⅱ),Hg(Ⅱ),Mn(Ⅱ),Ni(Ⅱ),Pb(Ⅱ) and Zn(Ⅱ) ions.Finally,the imprint mechanism of Cu(Ⅱ) ions on Cu(Ⅱ) ion imprinted polymer was discussed in detail.It was found that,at pH 5,the absorption capacity of 0.3 g of Cu(Ⅱ) ion imprinted and non-imprinted polymer particles was 50.3 mg/g and 20.1 mg/g,respectively,and Cu(Ⅱ) ion imprinted polymer exhibited a higher selectivity to Cu(Ⅱ) ions than non-imprinted polymer in the mixed aqueous solution.
【Fund】: 国家自然科学基金(20877036);; 江苏省研究生培养创新工程(CX07B-176z);; 科技部创新基金项目(05C26213100474)
【CateGory Index】: O631.3
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