Adsorption of L-histidine (LH) over mesoporous SBA-15 silicas functionalized by amine-, thiol- and cyano-functional groups has been studied. These organosilicas have been synthesized by co-condensation of proper monomers in the presence of a template (Pluronic P-123), and characterized by elemental analysis, nitrogen adsorption, X-ray diffraction and transmission electron microscopy. The highest LH static adsorption capacity was observed for the cyano-functionalized sample [approximately 70 mg g −1 (450 mol g −1 )]; by contrast, pristine SBA-15 had a lowest adsorption capacity of approximately 25 mg g −1 (170 mol g −1 ).
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Oszust et al. (2015) studied this question.
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