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An electrochemical sensing electrode based on ferrocene-heteropolyacid/graphene

A sensing electrode and heteropoly acid technology, applied in the field of electrochemical sensing electrodes, can solve the problems of poor sensitivity and slow detection speed, achieve the effect of improving electrocatalytic performance and solving slow detection speed

Inactive Publication Date: 2019-12-24
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of slow detection speed and poor sensitivity of the enzyme-free sensor currently used to detect xanthine, and provide a kind of electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene

Method used

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  • An electrochemical sensing electrode based on ferrocene-heteropolyacid/graphene
  • An electrochemical sensing electrode based on ferrocene-heteropolyacid/graphene
  • An electrochemical sensing electrode based on ferrocene-heteropolyacid/graphene

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specific Embodiment approach 1

[0018] Specific embodiment one: a kind of electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene of this embodiment is characterized in that a kind of electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene The electrode is composed of GCE electrode and Fc-PMo coated with GCE electrode 6 W 6 / RGO composite film, from the GCE electrode to the outer layer is Fc-PMo 6 W 6 : Ferrocene-phosphomolybdenum tungsten heteropolyacid complex layer, RGO: reduced graphene oxide layer.

specific Embodiment approach 2

[0019] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the described a kind of electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene is characterized in that the ferrocene-heteropolyacid / graphene In the complex layer of phosphomolybdenum tungsten heteropoly acid, the heteropoly acid is Keggin type phosphomolybdenum tungsten heteropoly acid, the molecular formula is H 3 PMo 6 W 6 o 40 mH 2 O, m=36~42; the molar ratio of ferrocene to heteropolyacid is 1: (6~8). Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0020] Specific embodiment three: The difference between this embodiment and specific embodiment one or two is that the complex layer of the ferrocene-phosphomolybdenum tungsten heteropolyacid is modified by GCE electrode at a concentration of 10mol / L~12mol / L ferrocene-phosphomolybdenum tungsten heteropoly acid solution, the modification time is 20min~25min. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

An electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene. The invention belongs to the technical field of electrochemical sensors, in particular to an electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene. The purpose of the invention is to solve the problems of complex preparation, slow response speed and poor sensitivity of the current enzyme-free sensor used to detect xanthine. Product: GCE electrode and Fc‑PMo coated with GCE electrode 6 W 6 / RGO composite membrane; the electrochemical sensor based on this electrochemical sensing electrode has excellent detection performance for xanthine.

Description

technical field [0001] The invention belongs to the technical field of electrochemical sensors, in particular to an electrochemical sensing electrode based on ferrocene-heteropolyacid / graphene. Background technique [0002] Xanthine is a purine base widely distributed in the organs and body fluids of the human body and other organisms, and it plays an important role in the process of purine metabolism. The determination of xanthine content in human blood and tissues is of great value for the diagnosis and treatment of a series of diseases such as gout, hyperuricemia, and Parkinson's disease. In human tissues, xanthine oxides can easily oxidize hypoxanthine to xanthine and further oxidize to uric acid, during which superoxide radical O 2 ·- , accompanied by superoxide, · The generation of OH free radicals, so the increase of xanthine content may lead to the aggravation of toxin content in the body and increase the incidence of the above-mentioned diseases. It is a dangerou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30
Inventor 马慧媛朱迪谭立超
Owner HARBIN UNIV OF SCI & TECH
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