Journal of Radiation Research and Radiation Processing ›› 2019, Vol. 37 ›› Issue (5): 3-050202-11.doi: 10.11889/j.1000-3436.2019.rrj.37.050202

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Preparation of a freestanding graphene oxide forward osmosis membrane by electron-beam irradiation and its acid recovery performance

YE Junzhang1,2,GU Yu2,3,LI Jihao2,WANG Dawei1,WU Jiangyu1(),ZHANG Bowu2()   

  1. 1. College of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
    2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-04-22 Revised:2019-04-28 Accepted:2019-04-28 Online:2019-10-20 Published:2019-10-15
  • Contact: Jiangyu WU,Bowu ZHANG E-mail:wujy@wit.edu.cn;zhangbowu@sinap.ac.cn
  • About author:YE Junzhang(male) was born in April 1992, and obtained his bachelor’s degree from Wuhan Institute of Technology in 2016. Now he is a master candidate at Wuhan Institute of Technology, majoring in polymer chemistry and physics
  • Supported by:
    National Natural Science Foundation of China(11605274)

Abstract:

A freestanding graphene oxide (GO) composite membrane was prepared by combining vacuum-assisted self-assembly with electron-beam irradiation. 1-Allyl-3-vinylimidazolium chloride ([AVIM]Cl) was chosen to complex and conjugate with the GO sheets. Fourier-transform infrared spectra demonstrated the success of the covalent bonding between [AVIM]Cl and the GO sheets. The results of hydrostatic pressure resistance test showed that the resistance of hydrostatic pressure was noticeably increased by introducing [AVIM]Cl. After further treatment by electron-beam irradiation, the obtained composite membrane can even withstand a hydrostatic pressure of 10.8 kPa. X-ray diffraction patterns illustrated that the imidazolium-based ionic liquid can effectively limit the swelling of the composite membrane in aqueous condition and reduce interlayer spacing change of the composite membrane under dry and wet conditions and that the interlayer spacing change was further reduced after irradiating the composite membrane with the electron-beam. The reverse salt rate of the composite membrane was as low as 0.14 mol/(m2?h), which meets the requirement of a forward osmosis membrane. In this study, application of the forward osmosis process in acid recovery was investigated by using the irradiated composite membrane as a barrier and salt water as a permeation solution. The 10 h test results indicated that the H+ permeation coefficient of the irradiated composite membrane can reach 87.9 m/h, which is three orders of magnitude higher than that of the conventional diffusion dialysis method.

Key words: Electron-beam irradiation, Graphene oxide, Ionic liquid, Forward osmosis, Acid recovery

CLC Number: 

  • TL13