Title

Superhydrophobic Membranes with Ordered Arrays of Nanospiked Microchannels for Water Desalination

Authors

Authors

Z. Y. Ma; Y. Hong; L. Y. Ma;M. Su

Comments

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Abbreviated Journal Title

Langmuir

Keywords

FLUX ENHANCEMENT; DISTILLATION; POLYMER; SURFACES; FABRICATION; MECHANISMS; TRANSPORT; OSMOSIS; STATES; FILMS; Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, ; Multidisciplinary

Abstract

Membrane distillation can desalinate seawater using low-grade heat energy or solar heat, but it has limited mass fluxes and membrane fouling issues. Glass membranes with integrated arrays of nanospiked microchannels and a narrow pore size distribution are made through a process that involves glass fiber drawing, dissolving template material from microchannels and differential chemical etching. After surface modification, superhydrophobic glass membranes with water contact angles of over 160 degrees are produced because of the formations of ordered arrays of spiked nanostructures. The superhydrophobic membrane has shown better antifouling ability and higher flux than those of existing polymer membranes, especially at high salt concentration, owing to its large pore diameter, straight pore shape, narrow pore size distribution, high clinical and thermal stabilities, and water-repelling ability.

Journal Title

Langmuir

Volume

25

Issue/Number

10

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

5446

Last Page

5450

WOS Identifier

WOS:000266081000007

ISSN

0743-7463

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