TY - JOUR ID - 1694 TI - Cationic dyes adsorption study on graphene- Polyvinylidene fluoride ‎nanocomposite membranes JO - Iranian Journal of Physics Research JA - IJPR LA - en SN - 1682-6957 AU - Khansanami, M AU - Esfandiar, A AU - Ghanbari, H R AD - ‎Department of physics, Sharif University of Technology, Theran, Iran ‎ ‎ Y1 - 2021 PY - 2021 VL - 21 IS - 2 SP - 283 EP - 291 KW - PGO composite membranes KW - water treatment KW - effects of surface charge KW - electrostatic ‎interactions DO - 10.47176/ijpr.21.2.61070 N2 - Polyvinylidene fluoride (PVDF) is one of the well-known polymers in different types of ‎membranes for water treatment applications, because of its unique chemical, mechanical and ‎thermal properties. Because of the presence of fluorine groups in polymer chain, the PVDF has ‎a negative electrostatic surface charge that makes the PVDF a suitable adsorbing material for ‎cationic dyes such as Rhodamine B (RB) and Methylene Blue (MB). The presence of two-‎dimensional graphene oxide sheets with negative electrostatic surface charge in the PVDF ‎matrix, can improve the adsorption of the dyes on PVDF/graphene oxide (PGO) composite ‎membranes due to increasing of negative electrostatic charge. In this study, we aimed to ‎explore synthesis and characterization of the PGO composite membranes by Scanning Electron ‎Microscopy (SEM), Atomic Force Microscopy (AFM), Raman spectroscopy, X-Ray diffraction ‎‎(XRD), to confirm the effective presence of the GO sheets in PVDF matrix.  In continue, the ‎mechanisms of physical adsorption of the dyes on PGO membranes have been investigated‎‎.‎ UR - https://ijpr.iut.ac.ir/article_1694.html L1 - https://ijpr.iut.ac.ir/article_1694_a71e970c5524b3d6e7fd1e96df7e57c3.pdf ER -