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Article: Two-dimensional Ti3C2Tx MXene membranes as nanofluidic osmotic power generators

TitleTwo-dimensional Ti3C2Tx MXene membranes as nanofluidic osmotic power generators
Authors
Keywordstitanium carbide
MXene membranes
nanoconfined fluidic channels
surface charges
salinity gradient power generation
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html
Citation
ACS Nano, 2019, v. 13 n. 8, p. 8917-8925 How to Cite?
AbstractSalinity-gradient is emerging as one of the promising renewable energy sources but its energy conversion is severely limited by unsatisfactory performance of available semipermeable membranes. Recently, nanoconfined channels, as osmotic conduits, have shown superior energy conversion performance to conventional technologies. Here, ion selective nanochannels in lamellar Ti3C2Tx MXene membranes are reported for efficient osmotic power harvesting. These subnanometer channels in the Ti3C2Tx membranes enable cation-selective passage, assisted with tailored surface terminal groups, under salinity gradient. A record-high output power density of 21 W·m–2 at room temperature with an energy conversion efficiency of up to 40.6% is achieved by controlled surface charges at a 1000-fold salinity gradient. In addition, due to thermal regulation of surface charges and ionic mobility, the MXene membrane produces a large thermal enhancement at 331 K, yielding a power density of up to 54 W·m–2. The MXene lamellar structure, coupled with its scalability and chemical tunability, may be an important platform for high-performance osmotic power generators.
Persistent Identifierhttp://hdl.handle.net/10722/284798
ISSN
2020 Impact Factor: 15.881
2020 SCImago Journal Rankings: 5.554
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHong, S-
dc.contributor.authorMing, F-
dc.contributor.authorShi, Y-
dc.contributor.authorLi, R-
dc.contributor.authorKim, IS-
dc.contributor.authorTang, C-
dc.contributor.authorAlshareef, HN-
dc.contributor.authorWang, P-
dc.date.accessioned2020-08-07T09:02:46Z-
dc.date.available2020-08-07T09:02:46Z-
dc.date.issued2019-
dc.identifier.citationACS Nano, 2019, v. 13 n. 8, p. 8917-8925-
dc.identifier.issn1936-0851-
dc.identifier.urihttp://hdl.handle.net/10722/284798-
dc.description.abstractSalinity-gradient is emerging as one of the promising renewable energy sources but its energy conversion is severely limited by unsatisfactory performance of available semipermeable membranes. Recently, nanoconfined channels, as osmotic conduits, have shown superior energy conversion performance to conventional technologies. Here, ion selective nanochannels in lamellar Ti3C2Tx MXene membranes are reported for efficient osmotic power harvesting. These subnanometer channels in the Ti3C2Tx membranes enable cation-selective passage, assisted with tailored surface terminal groups, under salinity gradient. A record-high output power density of 21 W·m–2 at room temperature with an energy conversion efficiency of up to 40.6% is achieved by controlled surface charges at a 1000-fold salinity gradient. In addition, due to thermal regulation of surface charges and ionic mobility, the MXene membrane produces a large thermal enhancement at 331 K, yielding a power density of up to 54 W·m–2. The MXene lamellar structure, coupled with its scalability and chemical tunability, may be an important platform for high-performance osmotic power generators.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html-
dc.relation.ispartofACS Nano-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in [JournalTitle], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].-
dc.subjecttitanium carbide-
dc.subjectMXene membranes-
dc.subjectnanoconfined fluidic channels-
dc.subjectsurface charges-
dc.subjectsalinity gradient power generation-
dc.titleTwo-dimensional Ti3C2Tx MXene membranes as nanofluidic osmotic power generators-
dc.typeArticle-
dc.identifier.emailTang, C: tangc@hku.hk-
dc.identifier.authorityTang, C=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acsnano.9b02579-
dc.identifier.pmid31305989-
dc.identifier.scopuseid_2-s2.0-85071708965-
dc.identifier.hkuros312227-
dc.identifier.volume13-
dc.identifier.issue8-
dc.identifier.spage8917-
dc.identifier.epage8925-
dc.identifier.isiWOS:000484077800041-
dc.publisher.placeUnited States-
dc.identifier.issnl1936-0851-

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