A facile route to enhance the water flux of a thin-film composite reverse osmosis membrane

incorporating thickness-controlled graphene oxide into a highly porous support layer

Jaewoo Lee, Jun Hee Jang, Hee Ro Chae, Sang H. Lee, Chung Hak Lee, Pyung Kyu Park, Young June Won, In Chul Kim

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In this study, we demonstrated that a reduction in solely the concentration of the polymer solution for preparation of the support layer effectively enhances the water flux of a thin-film composite (TFC) reverse osmosis (RO) membrane. However, a decrease in the polymer concentration caused the sub-surface structure of the support layer to become too porous, which unavoidably weakened the mechanical strength of the support layer. To overcome the problem, we prepared a highly porous support layer with improved mechanical strength by incorporating graphene oxide (GO) platelets. The thickness of the GO platelets was controlled by adjusting the mechanical energy input per volume of the precursor solution. We confirmed that well-exfoliated GO platelets (mean thickness: about 1.5 nm) are more effective in enhancing the mechanical properties of the support layer. The TFC RO membrane made of the GO composite support layer had almost 1.6 to 4 times higher water flux with comparable salt rejection compared to both the current upper bounds of the RO membranes prepared by modification of the active layer and commercial RO membranes.

Original languageEnglish
Pages (from-to)22053-22060
Number of pages8
JournalJournal of Materials Chemistry A
Volume3
Issue number44
DOIs
Publication statusPublished - 2015 Aug 12

Fingerprint

Osmosis membranes
Graphite
Reverse osmosis
Oxides
Graphene
Platelets
Fluxes
Thin films
Water
Composite materials
Strength of materials
Polymer solutions
Surface structure
Polymers
Salts
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Lee, Jaewoo ; Jang, Jun Hee ; Chae, Hee Ro ; Lee, Sang H. ; Lee, Chung Hak ; Park, Pyung Kyu ; Won, Young June ; Kim, In Chul. / A facile route to enhance the water flux of a thin-film composite reverse osmosis membrane : incorporating thickness-controlled graphene oxide into a highly porous support layer. In: Journal of Materials Chemistry A. 2015 ; Vol. 3, No. 44. pp. 22053-22060.
@article{e5884e59cfc74c768f428bd2a5789061,
title = "A facile route to enhance the water flux of a thin-film composite reverse osmosis membrane: incorporating thickness-controlled graphene oxide into a highly porous support layer",
abstract = "In this study, we demonstrated that a reduction in solely the concentration of the polymer solution for preparation of the support layer effectively enhances the water flux of a thin-film composite (TFC) reverse osmosis (RO) membrane. However, a decrease in the polymer concentration caused the sub-surface structure of the support layer to become too porous, which unavoidably weakened the mechanical strength of the support layer. To overcome the problem, we prepared a highly porous support layer with improved mechanical strength by incorporating graphene oxide (GO) platelets. The thickness of the GO platelets was controlled by adjusting the mechanical energy input per volume of the precursor solution. We confirmed that well-exfoliated GO platelets (mean thickness: about 1.5 nm) are more effective in enhancing the mechanical properties of the support layer. The TFC RO membrane made of the GO composite support layer had almost 1.6 to 4 times higher water flux with comparable salt rejection compared to both the current upper bounds of the RO membranes prepared by modification of the active layer and commercial RO membranes.",
author = "Jaewoo Lee and Jang, {Jun Hee} and Chae, {Hee Ro} and Lee, {Sang H.} and Lee, {Chung Hak} and Park, {Pyung Kyu} and Won, {Young June} and Kim, {In Chul}",
year = "2015",
month = "8",
day = "12",
doi = "10.1039/c5ta04042f",
language = "English",
volume = "3",
pages = "22053--22060",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "44",

}

A facile route to enhance the water flux of a thin-film composite reverse osmosis membrane : incorporating thickness-controlled graphene oxide into a highly porous support layer. / Lee, Jaewoo; Jang, Jun Hee; Chae, Hee Ro; Lee, Sang H.; Lee, Chung Hak; Park, Pyung Kyu; Won, Young June; Kim, In Chul.

In: Journal of Materials Chemistry A, Vol. 3, No. 44, 12.08.2015, p. 22053-22060.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A facile route to enhance the water flux of a thin-film composite reverse osmosis membrane

T2 - incorporating thickness-controlled graphene oxide into a highly porous support layer

AU - Lee, Jaewoo

AU - Jang, Jun Hee

AU - Chae, Hee Ro

AU - Lee, Sang H.

AU - Lee, Chung Hak

AU - Park, Pyung Kyu

AU - Won, Young June

AU - Kim, In Chul

PY - 2015/8/12

Y1 - 2015/8/12

N2 - In this study, we demonstrated that a reduction in solely the concentration of the polymer solution for preparation of the support layer effectively enhances the water flux of a thin-film composite (TFC) reverse osmosis (RO) membrane. However, a decrease in the polymer concentration caused the sub-surface structure of the support layer to become too porous, which unavoidably weakened the mechanical strength of the support layer. To overcome the problem, we prepared a highly porous support layer with improved mechanical strength by incorporating graphene oxide (GO) platelets. The thickness of the GO platelets was controlled by adjusting the mechanical energy input per volume of the precursor solution. We confirmed that well-exfoliated GO platelets (mean thickness: about 1.5 nm) are more effective in enhancing the mechanical properties of the support layer. The TFC RO membrane made of the GO composite support layer had almost 1.6 to 4 times higher water flux with comparable salt rejection compared to both the current upper bounds of the RO membranes prepared by modification of the active layer and commercial RO membranes.

AB - In this study, we demonstrated that a reduction in solely the concentration of the polymer solution for preparation of the support layer effectively enhances the water flux of a thin-film composite (TFC) reverse osmosis (RO) membrane. However, a decrease in the polymer concentration caused the sub-surface structure of the support layer to become too porous, which unavoidably weakened the mechanical strength of the support layer. To overcome the problem, we prepared a highly porous support layer with improved mechanical strength by incorporating graphene oxide (GO) platelets. The thickness of the GO platelets was controlled by adjusting the mechanical energy input per volume of the precursor solution. We confirmed that well-exfoliated GO platelets (mean thickness: about 1.5 nm) are more effective in enhancing the mechanical properties of the support layer. The TFC RO membrane made of the GO composite support layer had almost 1.6 to 4 times higher water flux with comparable salt rejection compared to both the current upper bounds of the RO membranes prepared by modification of the active layer and commercial RO membranes.

UR - http://www.scopus.com/inward/record.url?scp=84946430214&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84946430214&partnerID=8YFLogxK

U2 - 10.1039/c5ta04042f

DO - 10.1039/c5ta04042f

M3 - Article

VL - 3

SP - 22053

EP - 22060

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 44

ER -