Development of low mass-transfer-resistance fluorinated TiO 2 -SiO 2 /PVDF composite hollow fiber membrane used for biogas upgrading in gas-liquid membrane contactor

An inorganic-organic fluorinated titania-silica (fTiO2-SiO2)/polyvinylidene fluoride (PVDF) composite membrane was fabricated, via facile in-situ vapor-induced hydrolyzation method followed by hydrophobic modification. This low mass-transfer-resistance membrane, composing of a mesoporous layer deposited onto macroporous substrate, was designed for biogas upgrading in gas-liquid membrane contactor (GLMC) application. The surface hydroxylation was...