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

A kind of preparation method and application of graphene oxide-cellulose composite hydrogel

A composite hydrogel and cellulose technology, applied in the field of material science, can solve problems such as ineffective fusion, affecting adsorption performance, and uneven performance, and achieve the effects of solving poor mechanical properties, improving adsorption performance, and improving mechanical properties

Active Publication Date: 2018-08-07
TIANJIN UNIVERSITY OF TECHNOLOGY
View PDF4 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 solve the defect that graphene oxide and cellulose cannot be effectively fused during the composite process in the prior art, resulting in inhomogeneous performance and affecting its adsorption performance, and further provides a graphene oxide-cellulose composite hydrogel Preparation method and application of glue

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 preparation method and application of graphene oxide-cellulose composite hydrogel
  • A kind of preparation method and application of graphene oxide-cellulose composite hydrogel
  • A kind of preparation method and application of graphene oxide-cellulose composite hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This example provides a graphene oxide-cellulose composite hydrogel and its preparation method. Described preparation method comprises the steps:

[0041] 1) After mixing 0.01g of graphene oxide and 5g of 4-methylmorpholine-N-oxide in a 100mL three-neck flask, place it in an oil bath at 110°C and heat it for 8h with stirring, and heat the volatilized 4 -Methylmorpholine-N-oxide is condensed and refluxed to obtain a black graphene oxide-4-methylmorpholine-N-oxide mixture with good dispersion;

[0042] 2) 1g of commercially available cotton pulp cellulose and 0.02g of gallic acid that are pulverized into flocculents with a pulverizer are added to 19g of 4-methylmorpholine-N-oxide solvent with a water content of 13.3wt% and stirred evenly, Swell at 70°C for 10 minutes, and then dissolve in a vacuum oven at -0.1MPa and 110°C for 24 hours to obtain a uniform and transparent amber solution, which is the cotton pulp cellulose solution. Among them, the cotton pulp cellulose so...

Embodiment 2

[0048] This example provides a graphene oxide-cellulose composite hydrogel and its preparation method. Described preparation method comprises the steps:

[0049] 1) After mixing 0.03g of graphene oxide and 5g of 4-methylmorpholine-N-oxide in a 100mL three-neck flask, place it in an oil bath at 100°C for 8 hours with stirring and heating, and heat the volatilized 4 -Methylmorpholine-N-oxide is condensed and refluxed to obtain a black graphene oxide-4-methylmorpholine-N-oxide mixture with good dispersion;

[0050] 2) Add 1g of commercially available cotton pulp cellulose and 0.02g ascorbic acid that are pulverized into flocculent form with a pulverizer into 15.6g of 4-methylmorpholine-N-oxide solvent with a water content of 12wt% and stir evenly. After swelling at 90°C for 10 minutes, put it in a vacuum drying oven at -0.2MPa and 100°C for 22 hours to dissolve, and obtain a uniform and transparent amber solution, which is the cotton pulp cellulose solution. Among them, the cott...

Embodiment 3

[0055] This example provides a graphene oxide-cellulose composite hydrogel and its preparation method. Described preparation method comprises the steps:

[0056] 1) After mixing 0.04g of graphene oxide and 5g of 4-methylmorpholine-N-oxide in a 100mL three-necked flask, place it in an oil bath at 120°C and heat it for 6h with stirring, and heat the volatilized 4 -Methylmorpholine-N-oxide is condensed and refluxed to obtain a black graphene oxide-4-methylmorpholine-N-oxide mixture with good dispersion;

[0057] 2) Add 1 g of commercially available cotton pulp cellulose and 0.02 g of gallic acid into 24 g of 4-methylmorpholine-N-oxide solvent with a water content of 12 wt % and stir evenly with a pulverizer. After swelling at 80°C for 10min, put it in a vacuum drying oven at -0.15MPa and 115°C for 26h to dissolve, and obtain a uniform and transparent amber solution, which is the cotton pulp cellulose solution. Among them, the cotton pulp cellulose solution The cellulose content...

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
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

A preparation method of a graphene oxide-cellulose composite hydrogel comprises the following steps: 1) mixing and stirring graphene oxide and 4-methylmorpholine-N-oxide at the temperature of 100 DEG C-120 DEG C, to obtain a graphene oxide suspension; and dissolving cellulose in 4-methylmorpholine-N-oxide, to obtain a cellulose solution; 2) mixing and stirring the graphene oxide suspension and the cellulose solution at the temperature of 100 DEG C-120 DEG C, to obtain a mixed liquid; and 3) carrying out solidifying molding of the mixed liquid, and washing to obtain the graphene oxide-cellulose composite hydrogel. The graphene oxide-cellulose composite hydrogel has the advantages that the prepared graphene oxide-cellulose composite hydrogel has a three-dimensional reticular structure; graphene oxide also effectively improves the mechanical properties of the composite hydrogel, has the characteristics of easy separation and recovery, and has good adsorption effect on heavy metal ions; and the composite hydrogel has a good application prospect in the field of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a preparation method and application of a graphene oxide-cellulose composite hydrogel. Background technique [0002] Environmental pollution, especially heavy metal ion pollution, has seriously threatened people's daily life. Human and animal ingestion of heavy metal ions will continue to accumulate in the body, which seriously endangers human health. Therefore, the removal of heavy metal ions from aqueous solutions is a necessary step in the treatment of water pollution. There are various methods in the prior art to remove heavy metal ions in aqueous solution, such as chemical precipitation, membrane separation, ion exchange and electrochemical methods. Among them, adsorption method is one of the most effective methods for removing heavy metal ions, and is suitable for treating a large amount of wastewater. [0003] The adsorption method is to use porous a...

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): C08J3/075C08L1/02C08K3/04B01J20/24B01J20/28
CPCB01J20/20B01J20/24B01J20/28047C08J3/075C08J2301/02C08K3/04C08L1/02
Inventor 李文江周李
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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