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Electrically Conductive, Monolithic Metal–Organic Framework–Graphene (MOF@G) Composite Coatings

Hassan, Mohamed H.; Haikal, Rana R.; Hashem, Tawheed; Rinck, Julia; Koeniger, Franz; Thissen, Peter; Stefan Heiβler; Wöll, Christof; Alkordi, Mohamed H.

Abstract (englisch):
We present a novel approach to produce a composite of the HKUST-1 metal–organic framework (MOF) and graphene, which is suited for the fabrication of monolithic coatings of solid substrates. In order to avoid the degradation of graphene electrical properties resulting from chemical functionalization (e.g., oxidation yielding graphene oxide, GO), commercial, nonmodified graphene was utilized. The one-pot synthesis of the moldable composite material allows for a controllable loading of graphene and the tuning of porosity. Potentially, this facile synthesis can be transferred to other MOF systems. The monolithic coatings reported here exhibit high surface areas (1156–1078 m2/g). The electrical conductivity was high (a range of 7.6 × 10–6 S m–1to 6.4 × 10–1 S m–1) and was found to be proportional to the graphene content. The ability to readily attain different forms and shapes of the conductive, microporous composites indicates that the MOF@G system can provide a compelling approach to access various applications of MOFs, specifically in electrochemical catalysis, supercapacitors, and sensors.

Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 1944-8244, 1944-8252
KITopen-ID: 1000091854
HGF-Programm 43.22.01 (POF III, LK 01)
Erschienen in ACS applied materials & interfaces
Band 11
Heft 6
Seiten 6442–6447
Vorab online veröffentlicht am 31.01.2019
Schlagworte electrical conductivity; graphene; HKUST-1; metal−organic framework; monolith
Nachgewiesen in Web of Science
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