Document Type : Original Article

Authors

‎Department of physics, Sharif University of Technology, Theran, Iran ‎ ‎

Abstract

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.‎

Keywords

  1. A Y Hoekstra, " The water footprint of industry", Butterworth-Heinemann (Elsevier) (2015).

  2. S Xia and M Ni, J. Membr. Sci. 473 (2015) 54.

  3. M T Yagub, et al., Adv. Colloid Interface Sci. 209 (2014) 172.

  4. P V Nidheesh and R G S T Ramesh. Environ. Sci. Pollut. Res. 20 (2013) 2099.

  5. J Blanco, et al., Chem. Eng. J 240 (2014) 469.

  6. Z Y Zhu, et al., Chem. Eng. J. 314  (2017) 266.

  7. Z Zhu, et al., J. Colloid Interface Sci. 504 (2017) 429.

  8. F Liu, et al., J. Membr. Sci. 375 1 (2011) 1.

  9. L Ghaffar, et al., Environ. Sci. Technol. 52, 7 (2018) 4265.


10. M El Achaby, et al., Appl. Surf. Sci. 258, 19 (2012) 7668.


11. T Kuilla, et al., Progress in Polymer Science 35, 11 (2010) 1350.


12. J Chen, B and et al., Carbon. 64 (2013) 225.


13. Z Wang, and et al., Desalination. 299 (2012) 50.


14. Zhao, X. Xu, J. Chen, F. Yang, Desalination. 334, 1 (2014) 17.


15. N J K Esfandiar, et al., Appl. Phys. Lett. 103 (2013) 183110.


16. R Saadi, et al., Korean J. Chem. Eng 32, 5 (2015) 787.


17. H Han, et al., Colloids and Surfaces A: Physicochemical and Engineering Aspects 509 (2016) 539.‎

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