Abstract
ABSTRACT A magnetically separable Co(II)-imprinted polymer based on mesoporous silica (mag@silica-CIP) was synthesized for use as an adsorbent for the selective removal of Co(II). The optimal pH for Co(II) adsorption was found to be 5. Increasing the amount of the Co(II)-imprinted polymer layer on the surface of mag@silica led to an increase in the maximum adsorption capacity for Co(II). The mag@silica-CIP selectively adsorbed Co(II) even in the presence of competing species such as Fe(II), Ni(II), and Mn(II) ions. Thermodynamic experiments revealed that the adsorption of Co(II) by mag@silica-CIP is an endothermic and spontaneous process.
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