Electrochemical glucose sensor electrode and preparation method thereof

Abstract

The invention discloses an electrochemical glucose sensor electrode and a preparation method thereof. The electrochemical glucose sensor electrode takes graphene fiber (GF) as a substrate and takes Au and Ni (OH) 2 as non-enzyme glucose catalysts. During preparation, the graphene fiber is prepared by adopting a hydrothermal method, and the GF / Au / Ni (OH) 2 electrode is prepared by adopting an electrochemical deposition method. The graphene fiber at the bottom layer of the glucose sensor disclosed by the invention has excellent conductivity, so that rapid transfer and transmission of charges can be ensured, and external Au and Ni (OH) 2 show high catalytic activity and low biotoxicity and can also play a role in concerted catalysis, so that the glucose sensor has excellent performance. The problems of low conductivity and poor flexibility of a glucose sensor in the prior art are solved.

Description

technical field [0001] The invention belongs to the field of electrochemical sensors, and relates to an electrochemical glucose sensor electrode and a preparation method thereof. Background technique [0002] Glucose monitoring plays an important role in the clinical diagnosis and treatment of diabetes as well as in food industry and agricultural applications. Existing glucose detection methods are mainly minimally invasive enzyme-based glucose detection methods. Enzyme-based glucose sensors still suffer from a series of problems, including insufficient long-term stability, which stems from the nature of the enzyme, complex manufacturing processes, and unsatisfactory reproducibility associated with enzyme immobilization. [0003] In the past few years, considerable efforts have been devoted to developing flexible, non-invasive, and non-enzymatic glucose sensors. Carbon nanomaterials such as carbon nanotubes and graphene are widely used as electrode materials for glucose se...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor flexibility, low specific surface area, low sensor performance and low sensitivity of the conductive fibers in the electrodes in the prior art, and provide an electrochemical glucose sensor electrode and a preparation method thereof. The glucose sensor electrode is made of graphite GF / Au / Ni(OH)2 composite fiber electrodes were obtained by depositing Au nanosheets and Ni(OH)2 nanoparticles on the graphene fibers by electrochemical deposition.

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