106 0

Full metadata record

DC FieldValueLanguage
dc.contributor.author한태희-
dc.date.accessioned2020-11-11T01:26:19Z-
dc.date.available2020-11-11T01:26:19Z-
dc.date.issued2019-11-
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY A, v. 7, no. 41, Page. 23727-23732en_US
dc.identifier.issn2050-7488-
dc.identifier.issn2050-7496-
dc.identifier.urihttps://pubs.rsc.org/en/content/articlelanding/2019/TA/C9TA05242A#!divAbstract-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/155359-
dc.description.abstractOver the past few years, several nanofluidic channels have been constructed using ion-conductive materials. However, the design and fabrication of surface-charge-controllable nanochannels remain a scientific as well as a technological challenge. This study investigated the feasibility of graphene oxide (GO)-based fiber-type nanochannels for generating electrical energy by converting the salinity gradient. Owing to their large lateral size and the localized charged species on the edge, the low charge density of the GO fibers remains a critical bottleneck in their wider investigation. To address this critical issue, highly negatively charged and extremely small (2.42 +/- 0.38 nm) graphene quantum dots (GQDs) were synthesized and intercalated through the interstitial network of GO sheets in fibers. With the application of GQDs, the charge density was significantly increased to 1.12 mC m(-2) so that the ion conductance was enhanced to an average of 21 nS and the electrical energy generation was 0.25 W m(-2). This study presents a facile and novel approach of enhancing ion selectivity and ion conductivity of graphene-fiber based miniaturized nanofluidic channels, proving their potential for osmotic energy generation and efficiency.en_US
dc.description.sponsorshipWe are grateful to Dr N. B. Ambade for helpful discussion. This research was supported by the Basic Science Research Program (2017R1A2B4010771, 2016R1A6A1A03013422, and 2016M3A7B4905609), the Program for Fostering Next-Generation Researchers in Engineering (2017H1D8A2032495), and Korea Institute of Energy Technology Evaluation and Planning (2018201010636A) funded by Korea government.en_US
dc.language.isoenen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.subjectSILICA NANOCHANNELen_US
dc.subjectOXIDE MEMBRANESen_US
dc.subjectION-TRANSPORTen_US
dc.subjectCHALLENGESen_US
dc.subjectNANOSHEETSen_US
dc.subjectCHANNELSen_US
dc.subjectCELLSen_US
dc.titleGraphene quantum dots/graphene fiber nanochannels for osmotic power generationen_US
dc.typeArticleen_US
dc.relation.no41-
dc.relation.volume7-
dc.identifier.doi10.1039/c9ta05242a-
dc.relation.page23727-23732-
dc.relation.journalJOURNAL OF MATERIALS CHEMISTRY A-
dc.contributor.googleauthorLee, Ki Hyun-
dc.contributor.googleauthorPark, Hun-
dc.contributor.googleauthorEom, Wonsik-
dc.contributor.googleauthorKang, Dong Jun-
dc.contributor.googleauthorNoh, Sung Hyun-
dc.contributor.googleauthorHan, Tae Hee-
dc.relation.code2019000162-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ORGANIC AND NANO ENGINEERING-
dc.identifier.pidthan-
dc.identifier.researcherIDE-8590-2015-
dc.identifier.orcidhttps://orcid.org/0000-0001-5950-7103-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE