Surface modification of thin film composite forward osmosis membrane by silver-decorated graphene-oxide nanosheets

2015 ◽  
Vol 2 (4) ◽  
pp. 395-405 ◽  
Author(s):  
Adel Soroush ◽  
Wen Ma ◽  
Yule Silvino ◽  
Md. Saifur Rahaman
Keyword(s):  
Thin Film ◽  
Surface Modification ◽  
Graphene Oxide ◽  
Forward Osmosis ◽  
Graphene Oxide Nanosheets ◽  
Film Composite ◽  
Thin Film Composite

Antimicrobial thin film composite forward osmosis membrane is developed using silver-decorated graphene-oxide nanosheets coating.

scholarly journals Acid-Resistance Enhancement of Thin-Film Composite Membrane Using Barrier Effect of Graphene Oxide Nanosheets

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3151
Author(s):  
Hee-Ro Chae ◽  
In-Chul Kim ◽  
Young-Nam Kwon
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Acid Resistance ◽  
Barrier Effect ◽  
Graphene Oxide Nanosheets ◽  
Film Composite ◽  
Membrane Selectivity ◽  
Thin Film Composite ◽  
Acid Reaction ◽  
Walled Carbon Nanotubes

In this study, the effect of graphene oxide nanosheets (GONs) embedded in a thin-film composite (TFC) polyamide (PA) membrane on the acid resistance of the membrane was investigated by comparison with the effect of oxidized single-walled carbon nanotubes (o-SWNTs). Both GONs and o-SWNTs increased the hydrophilicity of the membranes and caused the formation of ridges and clustered bumps on the surfaces, resulting in slightly improved water permeability. However, the o-SWNTs-embedded membrane did not show a difference in acid resistance depending on the concentration of embedded material, but the acid resistance of the GONs-embedded membrane increased with increasing concentration. The acid resistance of the GONs-embedded membranes appears to be mainly due to the barrier effect caused by the nanosheet shape of the GONs along with a sacrificial role of the PA layer protruded by the addition of GONs and the decrease of acid reaction sites by the hydrogen bonding between GONs and PA. When the TFC PA membrane was prepared with a high amount (300 ppm) of the GONs without considering aggregation of GONs, membrane selectivity exceeding 95% was maintained 4.7 times longer than the control TFC membrane. This study shows that the acid resistance can be enhanced by the use of GONs, which give a barrier effect to the membrane.

Thin-film composite membranes with nanocomposite substrate modified with graphene oxide/TiO2 for forward osmosis process

2017 ◽  
Vol 70 ◽  
pp. 64-78 ◽  
Author(s):  
Fang Li ◽  
Feng Zhao ◽  
Manhong Huang ◽  
Chunyan Ma ◽  
Bo Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Comparison of performance and biofouling resistance of thin-film composite forward osmosis membranes with substrate/active layer modified by graphene oxide

RSC Advances ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 6502-6509 ◽  
Author(s):  
Yuan Li ◽  
Yu Yang ◽  
Chen Li ◽  
Li-an Hou
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Active Layer ◽  
Water Flux ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite

The substrate modified by GO could greatly improve water flux, whereas the GO-functionalized active layer is favorable for biofouling mitigation.

scholarly journals Thin-film composite forward osmosis membranes functionalized with graphene oxide–silver nanocomposites for biofouling control

2017 ◽  
Vol 525 ◽  
pp. 146-156 ◽  
Author(s):  
Andreia F. Faria ◽  
Caihong Liu ◽  
Ming Xie ◽  
Francois Perreault ◽  
Long D. Nghiem ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Forward Osmosis ◽  
Film Composite ◽  
Thin Film Composite ◽  
Silver Nanocomposites ◽  
Biofouling Control

scholarly journals Biofouling Mitigation in Forward Osmosis Using Graphene Oxide Functionalized Thin-Film Composite Membranes

2016 ◽  
Vol 50 (11) ◽  
pp. 5840-5848 ◽  
Author(s):  
François Perreault ◽  
Humberto Jaramillo ◽  
Ming Xie ◽  
Mercy Ude ◽  
Long D. Nghiem ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite
Sign in / Sign up

Export Citation Format

Share Document