Abstract
Silver-phosphate/graphene oxide/APTES (Ag3PO4/GO/APTES) composite materials modified by 3-aminopropyltriethoxysilane (APTES) were incorporated into polyvinylidene fluoride (PVDF) membrane to obtain light catalytic membrane. The structure and morphology of Ag3PO4/GO/APTES were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and thermogravimetric analyzer (TGA). Next, the morphology structure and roughness of Ag3PO4/GO/APTES/PVDF membrane were studied using SEM and Atomic force microscopy (AFM). The hydrophilicity and water flux of blended membranes were enhanced by the presence of a large number of hydrophilic groups on the surfaces of GO and APTES. Using Bovine serum albumin (BSA) solution as a pollution model, the multi-cycle anti-organic pollution ability of composite membranes was explored, and the anti-pollution performance was improved. The results showed that with the increase of Ag3PO4/GO/APTES content in the composite membrane, the rejection rate of dyes increases significantly. The enhanced photocatalytic degradation can be attributed to the presence of RGO which facilitates electron mediation and shuttle. This work provide a method for the efficient removal of dyes from wastewater.
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