In-situ preparation method of nitrogen-doped graphene oxide-mesoporous silica modified glassy carbon electrode and application of nitrogen-doped graphene oxide-mesoporous silica modified glassy carbon electrode in detection of food tannin

The invention belongs to the technical field of detection of tannin in food, and particularly relates to an in-situ preparation method of a nitrogen-doped graphene oxide-mesoporous silica modified glassy carbon electrode and application of the nitrogen-doped graphene oxide-mesoporous silica modified glassy carbon electrode in detection of tannin in food. The invention discloses an in-situ preparation method of a nitrogen-doped graphene oxide-mesoporous silica modified glassy carbon electrode. The in-situ preparation method comprises the following steps: S1, modifying a glassy carbon electrode by nitrogen-doped graphene oxide; s2, preparing an electro-deposition solution; s3, depositing a silicon film on the surface of the electrode; and S4, preparing the nitrogen-doped graphene oxide-mesoporous silica modified glassy carbon electrode. The nitrogen-doped graphene oxide-mesoporous silica is prepared in situ by adopting an electrochemical method, the method is simple and rapid, the prepared material has a large