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dc.contributor.authorSajja, Ravalika
dc.contributor.authorYou, Yi
dc.contributor.authorQi, Rongrong
dc.contributor.authorGoutham, Solleti
dc.contributor.authorBhardwaj, Ankit
dc.contributor.authorRakowski, Alexander
dc.contributor.authorHaigh, Sarah; orcid: 0000-0001-5509-6706
dc.contributor.authorKeerthi, Ashok; orcid: 0000-0002-8479-4762
dc.contributor.authorRadha, Boya; orcid: 0000-0003-1345-7029
dc.date.accessioned2021-06-04T01:07:04Z
dc.date.available2021-06-04T01:07:04Z
dc.date.issued2021-05-21
dc.identifierpubmed: 34018493
dc.identifierdoi: 10.1039/d1nr00001b
dc.identifier.citationNanoscale
dc.identifier.urihttp://hdl.handle.net/10034/624831
dc.descriptionFrom PubMed via Jisc Publications Router
dc.descriptionPublication status: aheadofprint
dc.description.abstractNonspecific molecular adsorption such as airborne contamination occurs on most surfaces including those of 2D materials and alters their properties. While surface contamination is studied using a plethora of techniques, the effect of contamination on confined systems such as nanochannels/pores leading to their clogging is still lacking. We report a systematic investigation of hydrocarbon adsorption in angstrom (Å) slit channels of varying heights. Hexane is chosen to mimic the hydrocarbon contamination and the clogging of the Å-channels is evaluated via a helium gas flow measurement. The level of hexane adsorption, in other words, the degree of clogging depends on the size difference between the channels and hexane. A dynamic transition of the clogging and revival process is shown in sub-2 nm thin channels. Long-term storage and stability of our Å-channels are demonstrated here for up to three years, alleviating the contamination and unclogging the channels using thermal treatment. This study highlights the importance of the nanochannels' stability and demonstrates the self-cleansing nature of sub-2 nm thin channels enabling a robust platform for molecular transport and separation studies. We provide a method to assess the cleanliness of nanoporous membranes, which is vital for the practical applications of nanofluidics in various fields such as molecular sensing, separation and power generation.
dc.languageeng
dc.sourceeissn: 2040-3372
dc.titleHydrocarbon contamination in angström-scale channels.
dc.typearticle
dc.date.updated2021-06-04T01:07:04Z


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