Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Porous graphene oxide color-changing composite film and preparation method thereof

A composite film and fossil technology, which is applied in the field of porous graphene oxide color-changing composite film and its preparation, can solve the problems of limited practical application and limited physical size, and achieve the effect of stabilizing the porous structure, improving stability and stable performance

Active Publication Date: 2020-09-04
重庆致贯科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prepared graphene quantum dots are dispersed particles, and the final terpyridine-modified graphene quantum dot composite has limited physical size, which is limited in practical application and is only suitable for laboratory use

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of porous graphene oxide color-changing composite film, its preparation method is:

[0026] (1) Clean the porous nickel foam substrate to remove the oxide film on the surface, then embed the cleaned porous nickel foam substrate in nano-graphite powder, and ultrasonically vibrate to make the nano-graphite powder penetrate into the pores of the porous nickel foam substrate for later use. ; Wherein, the size of the porous nickel foam substrate is 2cm×2cm, the thickness is 0.3mm, the particle size range of the nano-graphite powder is 20-500nm; the pore size range of the porous nickel foam substrate is 1-100um;

[0027] (2) Immerse the porous nickel base impregnated with nano-graphite powder in 200ml of concentrated sulfuric acid solution with a mass percent concentration of 98%, then add 30ml of potassium permanganate solution, stir evenly, heat up to 90°C, and add hydrogen peroxide dropwise Ultrasonic vibration is applied to carry out an oxidation reaction to obtain...

Embodiment 2

[0031] A kind of porous graphene oxide color-changing composite film, its preparation method is:

[0032] (1) Clean the porous nickel foam substrate to remove the oxide film on the surface, then embed the cleaned porous nickel foam substrate in nano-graphite powder, and ultrasonically vibrate to make the nano-graphite powder penetrate into the pores of the porous nickel foam substrate for later use. ; Wherein, the size of the porous nickel foam substrate is 2cm×2cm, the thickness is 0.6mm, the particle size range of the nano-graphite powder is 20-500nm; the pore size range of the porous nickel foam substrate is 1-100um;

[0033] (2) Immerse the porous nickel base impregnated with nano-graphite powder in 200ml of concentrated sulfuric acid solution with a mass percent concentration of 98%, then add 40ml of potassium permanganate solution, stir evenly, heat up to 80°C, and add hydrogen peroxide dropwise at the same time Ultrasonic vibration is applied to carry out an oxidation r...

Embodiment 3

[0037] A kind of porous graphene oxide color-changing composite film, its preparation method is:

[0038] (1) Clean the porous nickel foam substrate to remove the oxide film on the surface, then embed the cleaned porous nickel foam substrate in nano-graphite powder, and ultrasonically vibrate to make the nano-graphite powder penetrate into the pores of the porous nickel foam substrate for later use. ; Wherein, the size of the porous nickel foam base is 2cm×2cm, the thickness is 1mm, the particle size range of the nano-graphite powder is 20-500nm; the pore size range of the porous nickel foam base is 1-100um;

[0039] (2) Immerse the porous nickel base impregnated with nano-graphite powder in 200ml of concentrated sulfuric acid solution with a mass percent concentration of 98%, then add 50ml of potassium permanganate solution, stir evenly, heat up to 90°C, and drop hydrogen peroxide at the same time Ultrasonic vibration is applied to carry out an oxidation reaction to obtain gr...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Apertureaaaaaaaaaa
Login to View More

Abstract

The invention relates to a porous graphene oxide color-changing composite film. The composite film comprises a porous foamed nickel substrate, porous graphene oxide loaded on the surface of the porousfoamed nickel substrate, amino silane coupled and grafted on the porous graphene oxide, and a 2, 6-bis (2-pyridyl) isonicotinic acid group modified on the amino silane. The preparation method comprises the steps of using foamed nickel as a substrate; permeating raw material nano graphite powder into a porous structure in an ultrasonic vibration manner; and carrying out in-situ oxidation, so thatgraphene oxide obtained by oxidation is stably loaded on the surface of the porous foamed nickel substrate, a corresponding porous graphene oxide structure is obtained, and the porous graphene oxide structure is stable and reliable and can provide rich and stable porous structures. Meanwhile, by matching coupling grafting of amino silane and surface modification of 2, 6-di (2-pyridyl) isonicotinicacid groups, the graphene-based composite film with stable performance for an electrochemical luminescence sensor can be obtained.

Description

technical field [0001] The invention belongs to the field of graphene oxide composite film preparation, and in particular relates to a porous graphene oxide color-changing composite film and a preparation method thereof. Background technique [0002] Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, sensing, biomedicine, and drug delivery. It is considered to be a revolutionary material in the future. [0003] Especially in sensing and detection, it is often combined with terpyridine ruthenium, and is widely used in the preparation of electrochemiluminescent sensors. Among them, ruthenium terpyridine ([Ru(bpy)3 2+ ]) is a commonly used material for electrochemiluminescent probes, which has the advantages of easy operation and high sensitivity, and can be used in various fields such as medical drug detection and analysis, environmental analysis, etc. However, th...

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
IPC IPC(8): G01N27/327G01N27/30
CPCG01N27/308G01N27/3278
Inventor 张瑞秀
Owner 重庆致贯科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com