Preparation of novel HKUST-1-glucose oxidase composites and their application in biosensing.
Mikrochim Acta
; 190(1): 10, 2022 12 06.
Article
in En
| MEDLINE
| ID: mdl-36472673
ABSTRACT
Copper-based metal-organic frameworks (MOF) and multi-walled carbon nanotubes (HKUST-1-MWCNTs) composite were synthesized by one-step hydrothermal method, and PDA-enzyme-HKUST-1-MWCNTs composite was prepared by one-pot method for the construction of glucose biosensors, which realized the sensitive amperometric detection of glucose at 0.7 V (vs. SCE). The sensitivity of the sensor for glucose detection was 178 µA mM-1cm-2 in the wide linear range of 0.005 ~ 7.05 mM, the detection limit was 0.12 µM and the corresponding RSD was 3.8%. Its high performance is mainly benefitted from the high porosity and large specific surface area of HKUST-1, the good conductivity of MWCNTs, and the excellent adhesion and dispersion of PDA. The strategy of combining PDA and MWCNTs to improve the dispersion and conductivity of MOF is expected to achieve a wider application of MOF-based materials in the electrochemical biosensing field.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Nanotubes, Carbon
/
Metal-Organic Frameworks
Language:
En
Journal:
Mikrochim Acta
Year:
2022
Type:
Article