Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 38, Pages 35319-35326Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b11447
Keywords
conductive MOF; donor-acceptor charge transfer; electrocatalysis; electrochemical sensor; mesoporous; nitrite oxidation; zirconium-based MOF
Funding
- Ministry of Science and Technology (MOST) of Taiwan [MOST 107-2218-E-006-054-MY3, MOST 107-2628-E-011-002-MY3]
- Yushan Young Scholar Program, under the Ministry of Education (MOE), Taiwan
- Higher Education Sprout Project, MOE, Taiwan
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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.
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