Impregnation of Graphene Quantum Dots into a Metal–Organic Framework to Render Increased Electrical Conductivity and Activity for Electrochemical Sensing
Yu-Chuan ChenDepartment of Chemical Engineering, National Cheng Kung University, 1 University Road, Tainan City 70101, TaiwanWei‐Hung ChiangDepartment of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Sec.4, Da’an
Dist., Taipei City 10607, TaiwanDarwin KurniawanDepartment of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Sec.4, Da’an
Dist., Taipei City 10607, TaiwanPei-Chun YehDepartment of Chemical Engineering, National Taiwan University of Science and Technology, 43, Keelung Road, Sec.4, Da’an
Dist., Taipei City 10607, TaiwanKen‐ichi OtakeInstitute for integrated Cell-Materials Science (iCeMS), Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, JapanChung‐Wei KungDepartment of Chemical Engineering, National Cheng Kung University, 1 University Road, Tainan City 70101, Taiwan
2019en
ABI
Аннотация
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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