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Abstract: A Fe3+ imprinted silica material IIP-PMAA/SiO2 by surface grafting blotting, using silica gel as carrier, methacrylic acid as ligand, two glycol methyl acrylate as cross-linking agent. The adsorption properties and selective recognition ability on Fe3+ of the imprinted polymer were studied by equilibrium-adsorption method. The experimental data showed that the maximum static adsorption capacity of the imprinted sorbent was 26.80 mg/g. The sorption equilibrium time was 2 hand the optimum pH for quantitative ferric iron retention was 2.0. The relatively selective factor (k') of Fe3+ to other metal ions was greater than 1. At the same time, the regenerative adsorption properties of the materials were also stable, and the performance was still stable after repeated use of ten times. The IIP could be repeatedly used with high selectivity and stability for Fe(III).
Template and target information: iron ion, ferric ion, Fe(III)
Author keywords: surface ion imprinted, methacrylic acid, Fe(III), silica gel