▎ 摘　　要

Graphene oxide-filled poly(vinylidene fluoride) (PVDF) microfiltration tubes have been fabricated using a decompress filtration process for graphene oxide (GO) through microporous PVDF tubes. The GO, embedded within the pore channels of the PVDF microfiltration tube-walls, exhibits sphere-shape with a mean diameter of about 300 nm. The composite microfiltrations show an important application in a separation of citral from citral ethanol solution or a removal of Cu2+ from diluted Cu2+ aqueous solution. A series of separation measurement results for different citral concentrations demonstrate that the microfiltration tubes exhibit an excellent purification performance in separating citral from ethanol solution; and also, the Cu2+ removal experiments for different diluted Cu2+ concentrations show that the tubes possess significant removal capability of Cu2+ ions. (C) 2014 Elsevier B.V. All rights reserved.