Synthesis of highly stable graphene oxide membranes on polydopamine functionalized supports for seawater desalination

By Kai Xu, Bo Feng, Chen Zhou, A. Huang. 2016

190 citations recorded by the source corpus.

It is well known that graphene oxide (GO) is highly stable in air or water. However, the stability of asymmetric graphene oxide (GO) membrane depends on the chemistry of the support and also the thickness of the targeted coated GO layer. It is found that the GO membranes prepared on porous Al2O3 supports are unstable, and easy to crinkle and finally peel off from the support surface in a short time due to poor interaction with the support surface. In the present work, we have successfully prepared highly stable, permselective and reproducible GO membranes for seawater desalination by using polydopamine (PDA) as a novel covalent linker. Attributing to the high adhesive ability of PDA, GO nanosheets are attracted and bound onto the support surface, thus remarkably enhancing the stability of the GO membranes. It is found that the developed GO membranes are very promising for seawater desalination. For desalination of 3.5 wt% seawater at 90 C, high water fluxes of 48.4 kg m(-2) h(-1) and high ion rejections of over 99.7% can be obtained for the GO membrane which are much higher than those obtained from conventional porous inorganic membranes. (C) 2016 Elsevier Ltd. All rights reserved.

Subfields: Biomedical Engineering, Materials Chemistry, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/00b25dc71440b5dfa1bb3418b72554611c4843e6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. W. Jin
2. Gongpin Liu
3. Jie Shen
4. M. Elbahri
5. S. Homaeigohar

In Materials Chemistry

1. W. Jin
2. Gongpin Liu
3. Jie Shen
4. Jian Yang
5. M. Elbahri
6. Guozhen Liu
7. J. Xiong
8. S. Homaeigohar

In Water Science and Technology

1. W. Jin
2. Gongpin Liu
3. Guozhen Liu
4. M. Elbahri
5. S. Homaeigohar

Citations in the corpus

• Graphene membranes for water desalination (2017, methodology): “6 Mostly in the arid Persian Gulf countries, desalination plants perform based on heating and then condensing seawater.”
• Ultrathin two-dimensional MXene membrane for pervaporation desalination (2018, background): “As for seawater desalination, graphene-based materials are most studied until now [23-28].”