In:
Journal of The Electrochemical Society, The Electrochemical Society, Vol. 167, No. 11 ( 2020-01-08), p. 116513-
Abstract:
ZnCo-based metal-organic frameworks (MOFs) based on ZIF-8 and ZIF-67 were synthesized at room temperature. Direct carbonization of the ZnCo-MOF under nitrogen atmosphere produced a nanoporous ZnCo/C composite which exhibited a large surface area (1111.499 m 2 ∙g −1 ) and narrow pore-size distribution (1 ∼ 2 nm). A glassy carbon electrode was modified with the nanoporous ZnCo/C and Nafion for the electrochemical determination of the antibiotic metronidazole by linear sweep voltammetry. Under optimal conditions, the reduction peak current (observed at −0.66 V vs Ag/AgCl) increased linearly with increasing metronidazole concentration in the range of 0.05–100 μ M, with a detection limit estimated at 17 nM. These results are attributed to the large surface area, porous structure, high nitrogen content, and synergistic effects of the Zn and Co constituents. The sensor was satisfactorily used for metronidazole analysis in pharmaceutical samples.
Type of Medium:
Online Resource
ISSN:
0013-4651
,
1945-7111
DOI:
10.1149/1945-7111/ab9d94
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2020
Permalink