Articles
  • Effect of hydrothermal time on the structure and property of graphene oxide membrane

  • Tran Van Khaia,b,d,*, Pham Thuy Tranga,d, Le Ngoc Longa,d, Le Van Thanga,b,d, Tran Duc Chaua,d, Vuong Vinh Data,b,d and Mai Thanh Phongc,d,*

  • aFaculty of Materials Technology, Ho Chi Minh city University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
    bVNU-HCM Key Laboratory for Material Technologies, Ho Chi Minh city University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
    cHo Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
    dVietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Two dimensional graphene oxide (GO) has potential application in membrane separation owing to its unique structure and physicochemical properties. In this study, the reduced graphene oxide (rGO) was synthesized from GO via hydrothermal treatment at 160 oC for 1, 2, 3 and 4 h, and the rGO membranes were prepared on cellulose nitrate supporting membranes by vacuum filtration. The structural change and chemical composition of GO were investigated using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and contact angle measurements. The result shows that uniformly intact rGO membranes with good hydrophobicity could be achieved by adjusting the reduction degree of GO through changing the hydrothermal reaction time. The huge improvement of the hydrophobic property of rGO could be attributed to the removal of the most the hydrophilic oxygen-containing functional groups on the surface of GO. Additionally, the structure, chemical composition, and d-spacing of the GO can also be controlled by adjusting the reduction time. This method holds great potential because it can be prepared in large quantities at low cost, and suitable for applications in membrane technologies


Keywords: Graphene oxide, reduced graphene oxide, hydrothermal method, membrane

This Article

  • 2021; 22(4): 425-435

    Published on Aug 31, 2021

  • 10.36410/jcpr.2021.22.4.425
  • Received on Nov 25, 2020
  • Revised on Mar 12, 2021
  • Accepted on Apr 9, 2021

Correspondence to

  • Tran Van Khai a,b,d, Mai Thanh Phong c,d

  • aFaculty of Materials Technology, Ho Chi Minh city University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
    bVNU-HCM Key Laboratory for Material Technologies, Ho Chi Minh city University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
    cHo Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
    dVietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam
    Tel : +84 8 3864 7256 Fax: +84 8 3866 1843

  • E-mail: phong.mai@hcmut.edu.vn (M.T. Phong) E-mail: tvkhai