a b s t r a c tA new nano-scale restricted-access matrix (RAM) SiO 2 (MCM-41) with relatively high Ti-content (Ti/Si = 0.1), but superior surface area (1129 m 2 /g), was successfully synthesised for the enrichment of phosphopeptides. The TiO 2 was incorporated into the Si-MCM-41 via a hydrothermal process and the external surface was modified with alkyl diol by the successive hydrolysis of ␥-(glycidyloxypropyl) trimethoxysilane (GPTMS). Scanning electron microscopy, transmission electron microscopy, N 2 adsor…
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