Method for preparing grapheme-titanium dioxide composite electrochemical biosensor

A biosensor, titanium dioxide technology, applied in the direction of electrochemical variables of materials, scientific instruments, instruments, etc., can solve the problems of limited application and poor conductivity of electrochemical biosensors, and achieve simple process methods, low detection limits, and biological affinity. good sex effect
CN103308573AInactive Publication Date: 2013-09-18SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2013-09-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a grapheme-titanium dioxide composite electrochemical biosensor. The preparation method is orderly carried out according to the following steps of: preparing a grapheme oxide; preparing a graphene load titanium dioxide composite material; preparing a glassy carbon electrode; preparing a decorative glassy carbon electrode. The method for preparing the grapheme-titanium dioxide composite electrochemical biosensor is simple in technique, available in material and free of pollution. The product prepared by the preparation method achieves direct electron transfer of horseradish peroxidase and electrodes, and has the advantages of low detection limit, short response time, good biocompatibility, high sensitivity, good stability and the like.
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Description

technical field

[0001] The invention belongs to the field of material preparation and electrochemical technology, and relates to a preparation method of an electrochemical biosensor, in particular to a preparation method of a graphene-titania composite electrochemical biosensor. Background technique

[0002] Horseradish catalase is a typical oxidoreductase. Horseradish peroxidase (HRP) has the characteristics of high activity, good stability, small molecular weight and easy preparation, so it is most commonly used in sensor electrodes. Its physiological function is to catalyze H 2 o 2 reduction and H 2 o 2 The oxidation of many substrates that are intermediate products can be immobilized on the electrode surface by methods such as adsorption, covalent bonding, sol-gel method, and polymer embedding.

[0003] TiO 2 Nanomaterials have the characteristics of excellent biocompatibility, high electrical conductivity and low cost, and TiO 2 The application of nanomaterials as...

Claims

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