Adsorption-assisted transport of water vapour in super-hydrophobic membranes filled with multilayer graphene platelets

Emilia Gontarek-Castro; F Macedonio; F Militano; L Giorno; Marek Lieder; A Politano; E Drioli; Annarosa Gugliuzza

doi:10.1039/c9nr02581b

Adsorption-assisted transport of water vapour in super-hydrophobic membranes filled with multilayer graphene platelets

Abstract

The effects of confinement of multilayer graphene platelets in hydrophobic microporous polymeric membranes are here examined. Intermolecular interactions between water vapour molecules and nanocomposite membranes are envisaged to originate assisted transport of water vapour in membrane distillation processes when a suitable filler-polymer ratio is reached. Mass transport coefficients are estimated under different working conditions, suggesting a strong dependence of the transport on molecular interactions. Remarkably, no thermal polarization is observed, although the filler exhibits ultrahigh thermal conductivity. In contrast, enhanced resistance to wetting as well as outstanding mechanical and chemical stability meets the basic requirements of water purification via membrane distillation. As a result, a significant improvement of the productivity–efficiency trade-off is achieved with respect to the pristine polymeric membrane when low amounts of platelets are confined in spherulitic-like PVDF networks.

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Authors (8)

Emilia Gontarek-Castro (formerly: Emilia Gontarek)
F Macedonio
F Militano
L Giorno
Marek Lieder dr hab. inż.
A Politano
E Drioli
Annarosa Gugliuzza

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: NANOSCALE no. 11, pages 1 - 9,
ISSN: 2040-3364
Language:: English
Publication year:: 2019
Bibliographic description:: Gontarek E., Macedonio F., Militano F., Giorno L., Lieder M., Politano A., Drioli E., Gugliuzza A.: Adsorption-assisted transport of water vapour in super-hydrophobic membranes filled with multilayer graphene platelets// NANOSCALE. -Vol. 11, iss. 24 (2019), s.1-9
DOI:: Digital Object Identifier (open in new tab) 10.1039/c9nr02581b
Verified by:: Gdańsk University of Technology