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dc.contributor.authorHong, Seunghyun
dc.contributor.authorMing, Fangwang
dc.contributor.authorShi, Yusuf
dc.contributor.authorLi, Renyuan
dc.contributor.authorKim, In S.
dc.contributor.authorTang, Chuyang Y.
dc.contributor.authorAlshareef, Husam N.
dc.contributor.authorWang, Peng
dc.date.accessioned2019-07-25T14:03:34Z
dc.date.available2019-07-25T14:03:34Z
dc.date.issued2019-07-17
dc.identifier.citationHong, S., Ming, F., Shi, Y., Li, R., Kim, I. S., Tang, C. Y., … Wang, P. (2019). Two-Dimensional Ti3C2Tx MXene Membranes as Nanofluidic Osmotic Power Generators. ACS Nano, 13(8), 8917–8925. doi:10.1021/acsnano.9b02579
dc.identifier.doi10.1021/acsnano.9b02579
dc.identifier.urihttp://hdl.handle.net/10754/656189
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.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST) center applied research fund (CARF) awarded to Water Desalination and Reuse Center (WDRC). C.Y.T. was funded by the Research Grants Council of the Hong Kong Special Administration Region, China (C7051-17G).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acsnano.9b02579
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acsnano.9b02579.
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.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Nanotechnology Lab
dc.contributor.departmentEnvironmental Science and Engineering
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentWater Desalination & Reuse Center
dc.contributor.departmentWater Desalination and Reuse Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia, 23955-6900
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalACS Nano
dc.rights.embargodate2020-07-15
dc.eprint.versionPost-print
dc.contributor.institutionGlobal Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, South Korea
dc.contributor.institutionDepartment of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong 999077
kaust.personHong, Seunghyun
kaust.personMing, Fangwang
kaust.personShi, Yusuf
kaust.personLi, Renyuan
kaust.personAlshareef, Husam N.
kaust.personWang, Peng
kaust.acknowledged.supportUnitWater Desalination & Reuse Center


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