▎ 摘　　要

Graphene oxide (GO) and lithium chloride (LiCl) were introduced into poly (vinylidene fluoride) (PVDF) membranes prepared using the immersion precipitation technique. The hydrophilicity, water flux, X-ray diffraction (XRD), zeta potential, SEM and AFM images of membranes were investigated. By adjusting the content of GO from 0 wt% to 0.9 wt%, the water flux of PVDF/GO/LiCI nanohybrid membranes varied from 48.4 L/m(2) h to 61.90 L/m(2) hat 100 kPa. Because of the synergistic effects of GO and LiCl particles, the surface free energy (|triangle G(s)|) of M3 (0.5 wt% GO) membrane was highest (103.50 mJ/m(2)), indicating that the hydrophilicity of M3 membrane was highest. Rhodamine B aqueous solution was firstly used to determine the adsorption and desorption ability of membranes. After 20 cycles, the decolorization rates and flux recovery ratios of nanohybrid membranes exceeded 80% and 78.2% respectively, and the Rhodamine B rejection of M3 membrane was maximum (67.8%) at 100 kPa, which illustrated that nanohybrid membranes can be reused as a better ultrafiltration and dye recovery material, and the characteristic of M3 membrane was best. (C) 2017 Elsevier Inc. All rights reserved.