Amido-functionalized graphene oxide composite material and preparation method and application thereof

A composite material, amine-based function technology, applied in the direction of material electrochemical variables, etc., can solve the problems of poor heavy metal ion capture ability, limited effective contact area, poor electronic conduction, etc. Large-scale industrial production, beneficial effect of enrichment

Inactive Publication Date: 2014-03-12
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of limited effective contact area, poor electron conduction and poor heavy metal ion trapping ability of existing electrode modification materials used to detect heavy metal ions in the water phase, and provide an amine-based functionalized graphene oxide composite material The preparation method of the invention also provides the amine functionalized graphene oxide composite material prepared by the method and its application in detecting heavy metal ions

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
  • Amido-functionalized graphene oxide composite material and preparation method and application thereof
  • Amido-functionalized graphene oxide composite material and preparation method and application thereof
  • Amido-functionalized graphene oxide composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The invention provides a method for preparing a graphene oxide composite material. The preparation method comprises stirring an organic amine reagent and the graphene oxide sol at 30-120° C. for 3-72 hours in the presence of a solvent.

[0024] In the present invention, the amount of the solvent is enough to dissolve the organic amine reagent, but in a preferred situation, the weight ratio of the organic amine reagent to the organic solvent is 1:120-400. The weight ratio of graphene oxide to organic amine reagent in the graphene oxide sol is preferably 1:1-3.

[0025] In the present invention, the organic amine reagent is one or more selected from aromatic amines, peptides and alkyldiamines. Preferably, the organic amine reagent is one or more of p-phenylenediamine, aniline, cystine, glycine, glycine and ethylenediamine.

[0026] In the present invention, the solvent may be lower aliphatic alcohol or water, and the lower aliphatic alcohol is preferably ethanol or ethyl...

Embodiment 1

[0034] (1) Preparation of graphene oxide

[0035] Take 1g of natural flake graphite (10-100 μm in particle size) and add it to 30ml of concentrated sulfuric acid with a concentration of 98% by weight, stir in an ice bath at 0°C for 12h, then add 3g of potassium permanganate, stir at 35°C for 24h, until mixed The solution is earthy red, add 50ml of water to dilute, control the temperature at 90°C and stir for 0.5h, add 5ml of hydrogen peroxide with a concentration of 30% by weight, the solution turns golden yellow, and then use a concentration of 5% by weight hydrochloric acid at a speed of 5000r / min Centrifugal washing (200ml × 3 times) under centrifugal washing (200ml × 3 times), centrifugal washing (200ml × 3 times) with deionized water at a rotating speed of 15000r / min, the colloidal product after washing was added to water, and ultrasonically dispersed to obtain a concentration of 2mg / ml Graphene oxide sol.

[0036] (2) Amine functionalization of graphene oxide

[0037] ...

Embodiment 2

[0043] (1) Preparation of graphene oxide sheets

[0044] Take 1g of natural flake graphite (10-100μm in particle size) and add it to 20ml of 98% concentrated sulfuric acid, stir in an ice bath at 0°C for 4h, then add 5g of potassium permanganate, stir at 20°C for 48h, until the mixture is earthy red After adding 100ml of water to dilute, control the temperature at 70°C and stir for 1h, add 15ml of 10% by weight hydrogen peroxide, the solution turns golden yellow, then use 3% hydrochloric acid to wash centrifugally at a speed of 5000r / min (200ml×3 times), Centrifuge and wash with deionized water at a speed of 15000r / min (200ml×3 times), add the washed colloidal product into water, and ultrasonically disperse to obtain a graphene oxide sol with a concentration of 2mg / ml.

[0045] (2) Amine functionalization of graphene oxide

[0046] Dissolve 600mg of p-phenylenediamine in 200ml of ethanol, then mix it with 100ml of graphene oxide sol with a concentration of 2mg / ml as described...

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
concentrationaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a graphene oxide composite material. The preparation method comprises the step of stirring an organic amine reagent and graphene oxide collosol at the temperature of 30-129 DEG C for 3-72 hours in the presence of a solvent. The method further provides an amido-functionalized graphene oxide composite material prepared through the preparation method and an application of the amido-functionalized graphene oxide composite material in the detection of heavy metal ions. The amido-functionalized graphene oxide composite material provided by the invention has a large effective contact area, good electron conduction and has a good capability for capturing the heavy metal ions.

Description

technical field [0001] The invention relates to a method for preparing an amine functionalized graphene oxide composite material, and also relates to the amine functionalized graphene oxide composite material prepared according to the method and its application in detecting heavy metal ions. Background technique [0002] With the acceleration of industrialization and urbanization in our country, the problems caused by environmental pollution have become more and more prominent. In recent years, water pollution and air pollution have seriously affected people's daily life. A large amount of domestic sewage and industrial wastewater are discharged into the water body, and the heavy metals entering the water body will eventually endanger human health through drinking water, bio-accumulation, and food chains. The rivers that some mining areas rely on are seriously polluted. Residents on both sides of the rivers have suffered from pathological phenomena such as "itai disease" to...

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): G01N27/26
Inventor 智林杰王斌
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap