Composite glassy carbon electrode and preparation method and application thereof

A glassy carbon electrode and electrode technology, which is applied in the field of composite glassy carbon electrode and its preparation, can solve problems such as weak binding force, and achieve the effects of low overpotential, wide electrochemical window, low detection potential and overpotential

Pending Publication Date: 2019-02-12
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a composite glassy carbon electrode that is stably modified on a glassy carbon electrode substrate with a nanometer uniform porous film of silicon dioxide, so as to overcome the problem of weak binding force between VMSF and glassy carbon electrode (GCE) in the prior art

Method used

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  • Composite glassy carbon electrode and preparation method and application thereof
  • Composite glassy carbon electrode and preparation method and application thereof
  • Composite glassy carbon electrode and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0063] 1. A method for utilizing reduced graphene oxide as an adhesion layer to realize the stable modification of a mesoporous silicon dioxide homoporous film on a glassy carbon electrode substrate, comprising the following steps:

[0064] (1) Decorate the reduced graphene oxide on the surface of the glassy carbon electrode;

[0065] Wherein reduced graphene oxide (rGO) adopts the method for chemically reducing graphene oxide to prepare, specifically as follows:

[0066] Take 8mL graphene oxide dispersion, 32mL ultrapure water, 7μL hydrazine hydrate solution, 120μL ammonia water, stir evenly; react at 85°C for 3 hours. The solution after the reaction was centrifuged at 3000 rpm for 30 minutes, and the supernatant was taken.

[0067] The rGO / GCE electrode was prepared by drop-coating the rGO solution on the glassy carbon electrode:

[0068] Take 10 μL rGO solution, drop-coat it on the glassy carbon electrode, and bake it dry under infrared lamp.

[0069] (2) Preparation of ...

Embodiment 2

[0090] 1. A method for utilizing reduced graphene oxide as an adhesion layer to realize the stable modification of a mesoporous silicon dioxide homoporous film on a glassy carbon electrode substrate, comprising the following steps:

[0091] (1) Decorate the reduced graphene oxide on the surface of the glassy carbon electrode;

[0092] Wherein reduced graphene oxide (rGO) adopts the method for chemically reducing graphene oxide to prepare, specifically as follows:

[0093] Take 10mL graphene oxide dispersion, 30mL ultrapure water, 7μL hydrazine hydrate solution, 130μL ammonia water, stir evenly; react at 85°C for 3 hours. The solution after the reaction was centrifuged at 3000 rpm for 30 minutes, and the supernatant was taken.

[0094] The rGO / GCE electrode was prepared by drop-coating the rGO solution on the glassy carbon electrode:

[0095] Take 10 μL rGO solution, drop-coat it on the glassy carbon electrode, and bake it dry under infrared lamp.

[0096] (2) Preparation of...

Embodiment 3

[0102] 1. A method for utilizing reduced graphene oxide as an adhesion layer to realize the stable modification of a mesoporous silicon dioxide homoporous film on a glassy carbon electrode substrate, comprising the following steps:

[0103] (1) Decorate the reduced graphene oxide on the surface of the glassy carbon electrode;

[0104] Wherein reduced graphene oxide (rGO) adopts the method for chemically reducing graphene oxide to prepare, specifically as follows:

[0105] Take 6 mL of graphene oxide dispersion, 34 mL of ultrapure water, 7 μL of hydrazine hydrate solution, and 120 μL of ammonia water, and stir evenly; react at 85°C for 3 hours. The solution after the reaction was centrifuged at 3000 rpm for 30 minutes, and the supernatant was taken.

[0106] The rGO / GCE electrode was prepared by drop-coating the rGO solution on the glassy carbon electrode:

[0107] Take 10 μL rGO solution, drop-coat it on the glassy carbon electrode, and bake it dry under infrared lamp.

[0...

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Abstract

The invention discloses a composite glassy carbon electrode and a preparation method and an application thereof, and belongs to the field of novel materials. The composite glassy carbon electrode comprises a glassy carbon electrode substrate and a silicon dioxide nano homoporous film which is self-assembled on the surface of the glassy carbon electrode substrate. A reduced graphene oxide layer isformed between the silicon dioxide nano homoporous film and the glassy carbon electrode substrate as an adhesion layer. The composite glassy carbon electrode provided by the invention uses the reducedgraphene oxide as a conductive adhesive layer, the reduced graphene oxide has an acting force with both the glassy carbon electrode substrate and the VMSF, so that the silicon dioxide nano homoporousfilm is stably modified on the glassy carbon electrode substrate. The reduced graphene oxide has an enrichment effect on organic small molecules, and has an electrocatalytic performance. According tothe composite glassy carbon electrode provided by the invention, when detecting electrochemical organic small molecules, the composite glassy carbon electrode has a low detection potential and an overpotential, so that the detection sensitivity is improved.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a composite glassy carbon electrode which utilizes reduced graphene oxide as an adhesion layer to stably modify a nanometer homoporous film of silicon dioxide on a glassy carbon electrode substrate, and a preparation method and application thereof. Background technique [0002] Graphene, a two-dimensional honeycomb carbon material composed of a single layer of carbon atoms, has attracted great attention from researchers because of its unique physical properties and nanostructure. It has a large theoretical specific surface area, good electrical conductivity, high electrocatalytic activity, etc., and has important application prospects in different fields such as optics, electronics, magnetism, and heat. [0003] At present, there are many methods for preparing graphene, and the reduction of graphene oxide is one of the most commonly used methods for preparing graphene. Reduced graph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 奚凤娜赵靖雯黄洁李芷阳马晨星
Owner ZHEJIANG SCI-TECH UNIV
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