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dc.contributor.author한태희-
dc.date.accessioned2018-02-22T14:05:01Z-
dc.date.available2018-02-22T14:05:01Z-
dc.date.issued2011-10-
dc.identifier.citationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 권: 133, 호: 39, 페이지: 15264-15267en_US
dc.identifier.issn0002-7863-
dc.identifier.urihttp://pubs.acs.org/doi/abs/10.1021/ja205693t-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/40203-
dc.description.abstractOxidative etching of graphene flakes was observed to initiate from edges and the occasional defect sites in the basal plane, leading to reduced lateral size and a small number of etch pits. In contrast, etching of highly defective graphene oxide and its reduced form resulted in rapid homogeneous fracturing of the sheets into smaller pieces. On the basis of these observations, a slow and more controllable etching route was designed to produce nanoporous reduced graphene oxide sheets by hydrothermal steaming at 200 degrees C. The degree of etching and the concomitant porosity can be conveniently tuned by etching time. In contrast to nonporous reduced graphene oxide annealed at the same temperature, the steamed nanoporous graphene oxide exhibited nearly 2 orders of magnitude increase in the sensitivity and improved recovery time when used as chemiresistor sensor platform for NO(2) detection. The results underscore the efficacy of the highly distributed nanoporous network in the low temperature steam etched GO.en_US
dc.description.sponsorshipThis work was supported by the National Science Foundation through DMR CAREER 0955612, ECCS 925882 and the NSF-NSEC program at Northwestern University (EEC 0647560). Additional support was provided by the Northrop Grumman Corporation and the Sony Corporation. A.T.L.T. thanks the Defense Science and Technology Agency of Singapore for an overseas undergraduate scholarship. J.H. is an Alfred P. Sloan Research Fellow. Microscopy and surface analysis were carried out at the NUANCE center at Northwestern University.en_US
dc.language.isoenen_US
dc.publisherAMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USAen_US
dc.titleSteam Etched Porous Graphene Oxide Network for Chemical Sensingen_US
dc.typeArticleen_US
dc.relation.no39-
dc.relation.volume133-
dc.identifier.doi10.1021/ja205693t-
dc.relation.page15264-15267-
dc.relation.journalJOURNAL OF THE AMERICAN CHEMICAL SOCIETY-
dc.contributor.googleauthorHan, Tae Hee-
dc.contributor.googleauthorHuang, Yi-Kai-
dc.contributor.googleauthorTan, Alvin T. L-
dc.contributor.googleauthorDravid, Vinayak P-
dc.contributor.googleauthorHuang, Jiaxing-
dc.relation.code2011205895-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDEPARTMENT OF ORGANIC AND NANO ENGINEERING-
dc.identifier.pidthan-
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COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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