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

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

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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 m 2 /g). The electrical conductivity was high (a range of 7.6 × 10 -6 S m -1 to 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.

Original languageEnglish
Pages (from-to)6442-6447
Number of pages6
JournalACS Applied Materials and Interfaces
Volume11
Issue number6
DOIs
Publication statusPublished - 13 Feb 2019
Externally publishedYes

    Fingerprint

Keywords

  • electrical conductivity
  • graphene
  • HKUST-1
  • metal-organic framework
  • monolith

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Hassan, M. H., Haikal, R. R., Hashem, T., Rinck, J., Koeniger, F., Thissen, P., Stefan Heiβler, S., Wöll, C., & Alkordi, M. H. (2019). Electrically Conductive, Monolithic Metal-Organic Framework-Graphene (MOF@G) Composite Coatings. ACS Applied Materials and Interfaces, 11(6), 6442-6447. https://doi.org/10.1021/acsami.8b20951