Application of immobilized TiO2 on PVDF dual layer hollow fibre membrane to improve the photocatalytic removal of pharmaceuticals in different water matrices by Paredes, Lidia, Murgolo, Sapia, Dzinun, Hazlini, Dzarfan Othman, Mohd Hafiz, Ismail, Ahmad Fauzi, Carballa, Marta, Mascolo, Giuseppe