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Nonenzymatic Glucose Sensing and Magnetic Property Based On the Composite Formed by Encapsulating Ag Nanoparticles in Cluster-Based Co-MOF
- Source :
- Inorganic chemistry. 58(24)
- Publication Year :
- 2019
-
Abstract
- Utilizing the oxygen-bridged 5,5′-oxidiisophthalic acid (H4L) linker, one Co(II)-based 3D porous MOF {[Co5(L)2(OH)2(OH2)2(H2O)4]·2DMF·H2O}n (1) with pentanuclear [Co5(μ3-OH)2(μ2-OH2)2]8+ cluster was prepared. The glassy carbon electrode was modified by 1, 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@1 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@1 was greatly increased with low detection limit (1.32 μM) and good selectivity and sensitivity (0.135 μA μM–1), which promote the application of MOF-template porous composites as advanced electrochemical sensor materials. Furthermore, 1 shows an interesting magnetic spin-glass slow dynamics for the existing of peculiar pentanuclear Co(II) clusters.
- Subjects :
- Detection limit
010405 organic chemistry
Chemistry
Composite number
010402 general chemistry
01 natural sciences
0104 chemical sciences
Electrochemical gas sensor
Inorganic Chemistry
Matrix (chemical analysis)
Chemical engineering
Electrode
Cluster (physics)
Physical and Theoretical Chemistry
Porosity
Selectivity
Subjects
Details
- ISSN :
- 1520510X
- Volume :
- 58
- Issue :
- 24
- Database :
- OpenAIRE
- Journal :
- Inorganic chemistry
- Accession number :
- edsair.doi.dedup.....88dea73b49a34da4e6b3c3820ee67a4a