Effect of templating agents on the properties and membrane distillation performance of TiO2-coated PVDF membranes

被引：92

作者：

Meng, Suwan ^{[1
]}

Mansouri, Jaleh ^{[1
,2
]}

Ye, Yun ^{[1
]}

Chen, Vicki ^{[1
]}

机构：

[1] Univ New S Wales, Sch Chem Engn, Ctr Membrane Sci & Technol, UNESCO, Sydney, NSW 2052, Australia

[2] Cooperat Res Ctr Polymers, Notting Hill, Vic 3168, Australia

来源：

JOURNAL OF MEMBRANE SCIENCE | 2014年 / 450卷

基金：

澳大利亚研究理事会;

关键词：

Direct contact membrane distillation; Superhydrophobic; Composite membrane; Titania sol-gel; TIO2; THIN-FILMS; SUPERHYDROPHOBIC MEMBRANES; COMPOSITE MEMBRANES; SOL; DESALINATION; SURFACE; TITANIA; FABRICATION; EFFICIENCY; PRECURSOR;

D O I：

10.1016/j.memsci.2013.08.036

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Porous polyvinylidene fluoride membranes were coated with TiO2 and 1H,1H,2H,2H-perfluorododecyltrichlorosilane (FTCS) to create superhydrophobic surfaces for membrane distillation. The effect of the templating agents used in the sal-gel for TiO2 deposition was investigated. Results indicated that the use of a templating agent resulted in porous, multi-level microstructures. The final microstructure, nanostructure, wettability and desalination performance of the membranes were affected by both the physical and chemical properties of the templating agent. Coatings which did not use a templating agent resulted in greater deposition of TiO2, but lacked the hierarchical structure of their templated counterparts, leading to lower overall hydrophobicity. All modified membranes displayed a significant improvement in salt rejection, indicating a substantial reduction in pore wetting. Membranes templated with polyethylene glycol were found to have the optimum properties for desalination via membrane distillation. (C) 2013 Elsevier B.V. All rights reserved

引用

页码：48 / 59

页数：12

共 58 条

[1] Sol-gel synthesis and characterization of lamellar mesostructured titania films [J].

Alessandri, I ;

Armelao, L ;

Bontempi, E ;

Bottaro, G ;

Depero, LE ;

Poli, F ;

Tondello, E .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2005, 25 (5-8) :560-564

[2] Membrane distillation: A comprehensive review [J].

Alkhudhiri, Abdullah ;

Darwish, Naif ;

Hilal, Nidal .

DESALINATION, 2012, 287 :2-18

[3] Membrane-distillation desalination: status and potential [J].

Alklaibi, AM ;

Lior, N .

DESALINATION, 2005, 171 (02) :111-131

[4] Photocatalytic oxidation of methyl ethyl ketones over sol-gel mesoporous and meso-structured TiO2 films obtained by EISA method [J].

Arconada, N. ;

Castro, Y. ;

Duran, A. ;

Hequet, V. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 107 (1-2) :52-58

[5] Photocatalytic properties in aqueous solution of porous TiO2-anatase films prepared by sol-gel process [J].

Arconada, Noemi ;

Castro, Yolanda ;

Duran, Alicia .

APPLIED CATALYSIS A-GENERAL, 2010, 385 (1-2) :101-107

[6] A novel surface modified polyetherimide hollow fiber membrane for gas-liquid contacting processes [J].

Bakeri, Gh ;

Matsuura, T. ;

Ismail, A. F. ;

Rana, D. .

SEPARATION AND PURIFICATION TECHNOLOGY, 2012, 89 :160-170

[7] SILANIZATION OF SOLID SUBSTRATES - A STEP TOWARD REPRODUCIBILITY [J].

BRZOSKA, JB ;

BENAZOUZ, I ;

RONDELEZ, F .

LANGMUIR, 1994, 10 (11) :4367-4373

[8] Fabrication of TiO2 porous thin films using peg templates and chemistry of the process [J].

Bu, SJ ;

Jin, ZG ;

Liu, XX ;

Yang, LR ;

Cheng, ZJ .

MATERIALS CHEMISTRY AND PHYSICS, 2004, 88 (2-3) :273-279

[9]

CAO YJ, 2011, P 2010 INT C ADV MAT, V152, P856

[10] Laser microstructuring for fabricating superhydrophobic polymeric surfaces [J].

Cardoso, M. R. ;

Tribuzi, V. ;

Balogh, D. T. ;

Misoguti, L. ;

Mendonca, C. R. .

APPLIED SURFACE SCIENCE, 2011, 257 (08) :3281-3284

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