“…For these reasons, SBA-15 has received great attention in surface and materials sciences with its prominent applications in nanocomposites, catalysis, and separations [2]. For certain applications, including enzyme immobilization [3], drug release [4], adsorption of vapors [5], and chromatographic stationary phases [6,7] hydrophobic surfaces are needed; this requires surface functionalization of hydrophilic bare SBA-15. The classical method of covalent functionalization of silicas includes grafting through reactions with organosilanes of the general formula R 4Àn SiX n (n = 1 À 3).…”