| abstract |
The invention relates to the technical field of glucose detection, in particular to an enzyme-free glucose sensor and a preparation method and application thereof. The present invention adopts Magnolia grandiflora leaf as the carbon-based catalyst, which, as the base material, disperses the nickel atoms well and improves the catalytic activity of the material. The prepared Ni@NSiC nanomolecular layer was modified on the pretreated white glassy carbon electrode to obtain a highly active modified working electrode Ni@NSiC/GCE. Glucose was detected by cyclic voltammetry and chronoamperometry. The invention solves the problem of the influence of easily oxidative interference substances such as dopamine, ascorbic acid, uric acid and the like when the traditional electro-oxidation method detects glucose. The test results show that the material has excellent electrochemical sensing performance for glucose, high sensitivity, good stability and anti-interference ability, and has broad application prospects in the fields of electrocatalysis and biosensing. |