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Synthesis of ion-imprinted mesoporous silica gel sorbent for selective adsorption of copper ions in aqueous media

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Abstract

A new Cu(II) ion-imprinted sorbent was synthesized by a surface imprinting technique and characterized by FT-IR and SEM. Compared to the non-imprinted sorbent, the Cu(II) ion-imprinted sorbent had a higher adsorption capacity and selectivity for Cu(II). The static adsorption capacity of the Cu(II) ion-imprinted sorbent and non-imprinted sorbent for Cu(II) were 84.5 and 46.5 μmol g−1, respectively. The best selectivity coefficient over Zn(II) or Cd(II) ion was over 12. The relative selectivity coefficients of the sorbent for Cu(II) in the presence of Zn(II) and Cd(II) were 13 and 35, respectively. Furthermore, the new sorbent possessed a fast kinetics for Cu(II) sorption from aqueous solution with saturation time of <30 min, and could be used repeatedly. The standard deviation for 11 replicate determinations of 0.5 mg L−1 Cu(II) was 0.8%. This new Cu(II) ion-imprinted sorbent can be used as an effective solid-phase extraction material for the selective preconcentration and separation of Cu(II).

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 20775003) and Colleges and universities young talents fund (2010SQRL109).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Anqing Normal College, Anhui Key Laboratory of Functional Coordination Compounds, Anqing, 246011, China

    Genhua Wu, Guocheng Song, Dayu Wu, Yuyong Shen, Zhuqing Wang & Chiyang He

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  1. Genhua Wu
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  2. Guocheng Song
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  3. Dayu Wu
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  4. Yuyong Shen
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  5. Zhuqing Wang
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  6. Chiyang He
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Correspondence to Chiyang He.

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Wu, G., Song, G., Wu, D. et al. Synthesis of ion-imprinted mesoporous silica gel sorbent for selective adsorption of copper ions in aqueous media. Microchim Acta 171, 203–209 (2010). https://doi.org/10.1007/s00604-010-0414-1

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  • DOI: https://doi.org/10.1007/s00604-010-0414-1

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