Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of electrode surface modification material and its preparation method and application

A technology for modifying materials and electrode surfaces, applied in the direction of electrochemical variables of materials, etc., can solve the problems of limited development, high price, thermodynamic and chemical instability, etc., and achieve the effects of low cost, good reproducibility, and simple and feasible method.

Inactive Publication Date: 2016-03-30
SHANXI UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Enzyme-type glucose sensors have good selectivity and high sensitivity, but their high price, thermodynamic and chemical instability of the enzyme itself limit their development.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of electrode surface modification material and its preparation method and application
  • A kind of electrode surface modification material and its preparation method and application
  • A kind of electrode surface modification material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Preparation of electrode surface modification material PVP-GR / NiNPs / Chit suspension and determination of glucose.

[0017] 1. Preparation of polyvinylpyrrolidone functionalized graphene (PVP-GR):

[0018] (1) Add 2.5 mL of 1 mg / mL polyvinylpyrrolidone and 1 mg / mL graphene oxide into 4.89 mL of secondary water, and after electromagnetic stirring for 20 min, add 100 μL of 25% ammonia water and 10 μL of 80% hydrazine hydrate under stirring, and place in 60 °C in a water bath with electromagnetic stirring for 3.5 hours.

[0019] (2) Centrifuge at 12000 rpm for 20 min at room temperature, discard the supernatant, add 5 mL of secondary water to obtain 0.5 mg / mL polyvinylpyrrolidone-functionalized graphene (PVP-GR), which is a black suspension.

[0020] 2. Preparation of PVP-GR loaded nickel nanoparticles (PVP-GR / NiNPs) composite:

[0021] At room temperature, add 1 mL of PVP-GR prepared in Step 1, add 2.4 mL of secondary water, 100 μL of 0.5 mol / L nickel acetate, stir for 5...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an electrode surface modifying material as well as a preparation method and an application thereof, particularly relates to a dispersion liquid formed by dispersing polyvinylpyrrolidone-functionalized graphene-loaded nickel nano particles (PVP-GR / NiNPs) in a chitosan solution and a preparation method of the dispersion liquid. The dispersion fluid is dispensed on a regular clean electrode surface, dried under an infrared lamp, and activated by cyclic voltammetry in a NaOH solution to obtain a high-sensitivity enzyme-free glucose electrochemical sensor for glucose detection. The preparation method of the nano composite material disclosed by the invention is simple and quick, low in cost, and good in stability; and the prepared electrochemical sensor is high in sensitivity, wide in linear range and good in repeatability. The electrode surface modifying material is expected to be widely applied in the fields such as diagnosis of diabetes mellitus, clinical medicine and food process detection.

Description

technical field [0001] The invention relates to electrode surface modification materials, in particular to a suspension (PVP-GR / NiNPs) formed by dispersing polyvinylpyrrolidone functionalized graphene-loaded nickel nanoparticles (PVP-GR / NiNPs) in a chitosan (Chitosan) solution. NiNPs / Chit). Background technique [0002] Glucose is a very important compound. Human blood contains a certain concentration of glucose, referred to as blood sugar. Under normal circumstances, blood sugar maintains a dynamic balance, with fluctuations between 70-140mg / dl (3.9-7.8mmol / l). The sensing and monitoring of blood glucose concentration is of great significance to the diagnosis of human health and diseases. The sensing and detection of glucose has always been a hot topic in the research of electrochemical and biosensors. According to whether enzymes are added to electrochemical sensors, they can be divided into enzymatic glucose electrochemical sensors and non-enzymatic glucose electrochemi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04G01N27/30
Inventor 刘志广郭玉晶薛琼双少敏董川
Owner SHANXI UNIV