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The modification and characterization of porous particles and matrices using cyclodextrins (CD) have attracted a large amount of interest in recent years. In fact, CDs are at the heart of this study that aims to graft β-CD onto silica particles by means of efficient protocols and nonconventional energy sources. In particular, the use of microwave irradiation, benign reaction media, and a solvent-free planetary ball mill has provided a high degree of grafting. The inclusive properties of β-CD-grafted silica were tested with phenolphthalein and its sorption capacity with methyl orange, and both tests confirmed the efficiency of the grafting protocols. Samples were extensively characterized by TGA, elemental analysis, IR, BET, and HRTEM. The green protocols herein reported can facilitate access to functionalized silica and pave the way for its use in novel applications.
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Martina et al. (2014) studied this question.
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