Fabrication of TiO2-modified polytetrafluoroethylene ultrafiltration membranes via plasma-enhanced surface graft pretreatment
Fabrication of TiO2-modified polytetrafluoroethylene ultrafiltration membranes via plasma-enhanced surface graft pretreatment
Surface hydrophilic modification of polymer ultrafiltration membrane
using metal oxide represents an effective yet highly challenging
solution to improve water flux and antifouling performance. Via
plasma-enhanced graft of poly acryl acid (PAA) prior to coating
TiO2, we successfully fixed TiO2 functional thin
layer on super hydrophobic polytetrafluoroethylene (PTFE)
ultrafiltration (UF) membranes. The characterization results evidenced
TiO2 attached on the PTFE-based UF membranes through the
chelating bidentate coordination between surface-grafted carboxyl group
and Ti4+. The TiO2 surface modification may
greatly reduce the water contact angle from 115.8° of the PTFE
membrane to 35.0° without degradation in 30-day continuous
filtration operations. The novel TiO2/PAA/PTFE membranes also
exhibited excellent antifouling and self-cleaning performance due to the
intrinsic hydrophilicity and photocatalysis properties of
TiO2, which was further confirmed by the photo-degradation of
MB under Xe lamp irradiation.
ultrafiltration, polytetrafluoroethylene membrane, titanium dioxide (TiO2), plasma-induced graft polymerization
749-757
Qian, Yingjia
52fab006-a18a-4c1c-9732-2e1c4d975336
Chi, Lina
ae1400a8-9860-4851-94d6-6981267c5afd
Zhou, Weili
4afa783b-3db5-4a84-9dc3-1b64451972bb
Yu, Zhenjiang
f40d74d5-0f4a-4a6c-96b3-725355bc302e
Zhang, Zhongzhi
e4e57081-412f-44b2-9c4c-6a1013179f3f
Zhang, Zhenjia
27f28f9a-1f64-431d-937e-0691c46a0afb
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
1 January 2016
Qian, Yingjia
52fab006-a18a-4c1c-9732-2e1c4d975336
Chi, Lina
ae1400a8-9860-4851-94d6-6981267c5afd
Zhou, Weili
4afa783b-3db5-4a84-9dc3-1b64451972bb
Yu, Zhenjiang
f40d74d5-0f4a-4a6c-96b3-725355bc302e
Zhang, Zhongzhi
e4e57081-412f-44b2-9c4c-6a1013179f3f
Zhang, Zhenjia
27f28f9a-1f64-431d-937e-0691c46a0afb
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Qian, Yingjia, Chi, Lina, Zhou, Weili, Yu, Zhenjiang, Zhang, Zhongzhi, Zhang, Zhenjia and Jiang, Zheng
(2016)
Fabrication of TiO2-modified polytetrafluoroethylene ultrafiltration membranes via plasma-enhanced surface graft pretreatment.
Applied Surface Science, 360, part B, .
(doi:10.1016/j.apsusc.2015.11.059).
Abstract
Surface hydrophilic modification of polymer ultrafiltration membrane
using metal oxide represents an effective yet highly challenging
solution to improve water flux and antifouling performance. Via
plasma-enhanced graft of poly acryl acid (PAA) prior to coating
TiO2, we successfully fixed TiO2 functional thin
layer on super hydrophobic polytetrafluoroethylene (PTFE)
ultrafiltration (UF) membranes. The characterization results evidenced
TiO2 attached on the PTFE-based UF membranes through the
chelating bidentate coordination between surface-grafted carboxyl group
and Ti4+. The TiO2 surface modification may
greatly reduce the water contact angle from 115.8° of the PTFE
membrane to 35.0° without degradation in 30-day continuous
filtration operations. The novel TiO2/PAA/PTFE membranes also
exhibited excellent antifouling and self-cleaning performance due to the
intrinsic hydrophilicity and photocatalysis properties of
TiO2, which was further confirmed by the photo-degradation of
MB under Xe lamp irradiation.
Text
__userfiles.soton.ac.uk_Library_SLAs_Work_for_ALL's_Work_for_ePrints_Accepted Manuscripts_Fabrication.pdf
- Accepted Manuscript
More information
Accepted/In Press date: 6 November 2015
e-pub ahead of print date: 12 November 2015
Published date: 1 January 2016
Keywords:
ultrafiltration, polytetrafluoroethylene membrane, titanium dioxide (TiO2), plasma-induced graft polymerization
Organisations:
Energy Technology Group, Civil Maritime & Env. Eng & Sci Unit, Engineering Sciences
Identifiers
Local EPrints ID: 384960
URI: http://eprints.soton.ac.uk/id/eprint/384960
ISSN: 0169-4332
PURE UUID: 5db5bf16-fca8-4045-973f-2e4a2c6c6bf2
Catalogue record
Date deposited: 10 Dec 2015 16:56
Last modified: 15 Mar 2024 03:47
Export record
Altmetrics
Contributors
Author:
Yingjia Qian
Author:
Lina Chi
Author:
Weili Zhou
Author:
Zhenjiang Yu
Author:
Zhongzhi Zhang
Author:
Zhenjia Zhang
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
