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Ultraporous superhydrophobic gas-permeable nano-layers by scalable solvent-free one-step self-assembly

Liu, Guanyu; Wong, William; Nasiri, Noushin; Tricoli, Antonio

Description

Superhydrophobic materials with excellent humidity tolerance, high porosity and light transmittance are being investigated for numerous applications including moisture-sensitive catalysts and perovskite solar cells. Here, we report the one-step solvent-free synthesis of ultraporous superhydrophobic nano-layers by the on-the-fly functionalization of nanoparticle aerosols. Short exposure of surfaces to hot Mn3O4, ZnO and TiO2 aerosols results in ultraporous nanoparticle networks with repulsive...[Show more]

dc.contributor.authorLiu, Guanyu
dc.contributor.authorWong, William
dc.contributor.authorNasiri, Noushin
dc.contributor.authorTricoli, Antonio
dc.date.accessioned2016-06-14T23:19:32Z
dc.identifier.issn2040-3364
dc.identifier.urihttp://hdl.handle.net/1885/102931
dc.description.abstractSuperhydrophobic materials with excellent humidity tolerance, high porosity and light transmittance are being investigated for numerous applications including moisture-sensitive catalysts and perovskite solar cells. Here, we report the one-step solvent-free synthesis of ultraporous superhydrophobic nano-layers by the on-the-fly functionalization of nanoparticle aerosols. Short exposure of surfaces to hot Mn3O4, ZnO and TiO2 aerosols results in ultraporous nanoparticle networks with repulsive dewetting state approaching ideal Cassie-Baxter superhydrophobicity. In addition to showcasing sliding angles of ca. 0° and very low contact angle hysteresis of 3° ± 2°, these optimal nano-layers have up to 98% porosity and pore size of several micrometres, a key feature to enable efficient penetration of gases to the substrate surface. The stability of this ultraporous superhydrophobic morphology is demonstrated by rapidly applying Moses effect-functionality to substrates that parts water up to 5 mm high. This scalable synthesis method offers a flexible and rapid approach for the production of numerous moisture-resistant devices including gas sensors, catalysts and perovskite solar cells.
dc.publisherRoyal Society of Chemistry
dc.sourceNanoscale
dc.titleUltraporous superhydrophobic gas-permeable nano-layers by scalable solvent-free one-step self-assembly
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume8
dc.date.issued2016
local.identifier.absfor100799 - Nanotechnology not elsewhere classified
local.identifier.ariespublicationU3488905xPUB11768
local.type.statusPublished Version
local.contributor.affiliationLiu, Guanyu, College of Engineering and Computer Science, ANU
local.contributor.affiliationWong, William, College of Engineering and Computer Science, ANU
local.contributor.affiliationNasiri, Noushin, College of Engineering and Computer Science, ANU
local.contributor.affiliationTricoli, Antonio, College of Engineering and Computer Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue11
local.bibliographicCitation.startpage6085
local.bibliographicCitation.lastpage6093
local.identifier.doi10.1039/c5nr09000h
dc.date.updated2016-06-14T08:40:23Z
local.identifier.scopusID2-s2.0-84960843778
CollectionsANU Research Publications

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