Impregnation of Graphene Quantum Dots into a Metal-Organic Framework to Render Increased Electrical Conductivity and Activity for Electrochemical Sensing

Yu Chuan Chen, Wei Hung Chiang, Darwin Kurniawan, Pei Chun Yeh, Ken Ichi Otake, Chung Wei Kung

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Graphene quantum dots (GQD) with an average size of 3.1 nm were incorporated into a mesoporous porphyrinic zirconium-based metal-organic framework (MOF) by direct impregnation to render the donor-acceptor charge transfer from GQDs to porphyrinic linkers. The hybrid material still possesses around half porosity of the pristine MOF and shows a 100-fold higher electrical conductivity compared to that of the parent MOF. By utilizing the porphyrinic linkers as catalytically active units, the GQD-MOF material exhibits a better electrochemical sensing activity toward nitrite in aqueous solutions compared to both the pristine MOF and GQD.

Original languageEnglish
Pages (from-to)35319-35326
Number of pages8
JournalACS Applied Materials and Interfaces
Volume11
Issue number38
DOIs
Publication statusPublished - 2019 Sep 25

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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