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Nonenzymatic Glucose Sensing and Magnetic Property Based On the Composite Formed by Encapsulating Ag Nanoparticles in Cluster-Based Co-MOF.

07:00 EST 3rd December 2019 | BioPortfolio

Summary of "Nonenzymatic Glucose Sensing and Magnetic Property Based On the Composite Formed by Encapsulating Ag Nanoparticles in Cluster-Based Co-MOF."

Utilizing the oxygen-bridged 5,5'-oxidiisophthalic acid (HL) linker, one Co(II)-based 3D porous MOF {[Co(L)(OH)(OH)(HO)]·2DMF·HO} () with pentanuclear [Co(μ-OH)(μ-OH)] cluster was prepared. The glassy carbon electrode was modified by , and the obtained electrode revealed electrocatalytic performance for glucose oxidation. The porous MOF matrix is beneficial for dispersing Ag nanoparticles evenly in the interior cages or channels, so Ag@ composite composed of both Ag nanoparticles and MOF was further prepared through deposition-reduction method to enhance electrocatalytic activity. The result demonstrates that the glucose oxidation by Ag@ was greatly increased with low detection limit (1.32 μM) and good selectivity and sensitivity (0.135 μA μM), which promote the application of MOF-template porous composites as advanced electrochemical sensor materials. Furthermore, shows an interesting magnetic spin-glass slow dynamics for the existing of peculiar pentanuclear Co(II) clusters.

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Name: Inorganic chemistry
ISSN: 1520-510X
Pages:

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