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Preparation and application of Cu2O hexagram microcrystal composite material adopting functionalized carbon nano tubes as carrier

A composite material, carbon nanotube technology, applied in the direction of nanotechnology, nanotechnology, material electrochemical variables, etc., can solve the problem of crystal plane structure without high index, achieve low detection limit, wide linear range, good application Foreground effect

Active Publication Date: 2015-05-13
GUANGXI NORMAL UNIV
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Problems solved by technology

However, none of the above-mentioned copper oxide micro / nanoparticles with a high-index crystal structure has a high-index crystal structure. Functionalized carbon nanotubes with Cu-supported 2 The shape-controlled synthesis of O hexagonal star-shaped microcrystalline composites and its application in the field of electrochemical sensors have not yet been reported in literature and patents

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  • Preparation and application of Cu2O hexagram microcrystal composite material adopting functionalized carbon nano tubes as carrier
  • Preparation and application of Cu2O hexagram microcrystal composite material adopting functionalized carbon nano tubes as carrier

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Embodiment

[0014] Example: Preparation A functionalized carbon nanotube loaded Cu 2 O hexagonal star-shaped microcrystalline composites.

[0015] refer to figure 1 and figure 2 , (1) Add 20 mg of acidified MWCNTs, sodium dodecyl sulfate (SDS) and 5–200 μL of 3,4-ethylenedioxythiophene (EDOT) monomer into a container filled with 20 mL of triple distilled water, room temperature After stirring for 2 h, 100 mg mL was added dropwise ?1 ammonium persulfate aqueous solution, and then continuously stirred for 24 h, and the obtained product was centrifuged, washed and vacuum-dried to obtain the PEDOT functionalized MWCNTs carrier material;

[0016] (2) Add 1 g polyvinylpyrrolidone (PVP) to 13 mL triple distilled water, and add PEDOT functionalized MWCNTs and 2 mg mL of Cu / PEDOT functionalized MWCNTs = 1 / 4 mass ratio ?1 CuSO 4 After magnetically stirring for 2 h, add a mixed solution of trisodium citrate and sodium carbonate (0.6 M in concentration), continue stirring for 10 min, add 2 m...

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Abstract

The invention provides a preparation method of a Cu2O hexagram microcrystal composite material having a high-index crystal plane structure and adopting functionalized carbon nano tubes as a carrier. PEDOT (poly(3,4-ethylenedioxythiophene)) functionalized MWCNTs (multi-walled carbon nanotubes) are taken as a carrier, the size of a Cu2O hexagram microcrystal can be remarkably reduced, the dispersity and the utilization efficiency of Cu2O catalysis particles are improved, electro transfer between glucose and a composite material catalyst is facilitated, and the electrocatalytic activity of the Cu2O hexagram microcrystal composite material adopting the PEDOT functionalized MWCNTs as the carrier for glucose oxidation is greatly enhanced, so that a non-enzyme electrochemical glucose sensor established through the composite material has excellent detecting performance. The preparation process of the sensor is simple, and the sensor has wider linear range, lower detection limit and good reproducibility, stability and antijamming capability in the aspect of glucose detection and has a good application prospect in the field of clinical diagnosis, food industrial analysis and the like.

Description

technical field [0001] The invention relates to the field of electrochemical sensors, in particular to a functionalized carbon nanotube loaded Cu 2 Preparation and application of O hexagonal star-shaped microcrystalline composites. Background technique [0002] In recent years, research on electrochemical glucose sensors has attracted more and more attention. How to prepare electrochemical glucose sensors with high sensitivity, good selectivity, short response time, wide linear range, good stability and reproducibility is the most important topic so far. research hotspots. Glucose sensors currently reported mainly include enzyme-based and non-enzyme-based sensors. Although enzyme-based sensors have good selectivity and sensitivity in the process of glucose detection, the enzymes in the enzyme electrode are affected by external environmental factors such as temperature and pH. It is unstable and easy to deactivate, which directly affects the life of the sensor and the accur...

Claims

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Application Information

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IPC IPC(8): G01N27/30B82Y40/00B82Y30/00
Inventor 樊友军武丽娜王莉孙胜男
Owner GUANGXI NORMAL UNIV
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