Title of Paper:Elucidating the electrostatic interaction of sulfonic acid functionalized SBA-15 for ciprofloxain adsorption

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Date of Publication:2015-09-15

Journal:APPLIED SURFACE SCIENCE

Included Journals:SCIE、EI

Volume:349

Page Number:224-229

ISSN No.:0169-4332

Key Words:Mesoporous; Organo-functionalization; Adsorption; Antibiotics pollution

Abstract:Though adsorption is a promising method to treat anitibotics pollution, the complexity of many kinds of antibiotics molecules and the multiple roles of organic functional groups in organo-functionalized mesoporous silicas adsorbents cause diverse interactions between the antibiotics and the adsorbents. Here, we prepared SBA-15, SH-SBA-15 and SO3H-SBA-15 with comparable textural and structural property for the adsorption of ciprofloxain to elucidate the dual roles of organic functional groups. It is found that the beneficial electrostatic interaction of SO3H-SBA-15 precedes its disadvantageous hydrophilicity for adsorption, which is different from amine functionalized mesoporous materials as reported elsewhere. The potential antibiotics adsorbents, SO3H-SBA-15, could be reused 3 times without obvious decrease of adsorption property. (C) 2015 Elsevier B.V. All rights reserved.