Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of water-soluble starch modified carbon nanocomposite material

A technology of water-soluble starch and composite materials, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of reducing adsorption performance, decline, etc., and achieve the effect of mild process conditions and excellent adsorption performance.

Inactive Publication Date: 2018-11-20
CENT SOUTH UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the reduction of the adsorption performance caused by the reduction of the carboxyl functional group caused by the further reaction of the esterification reaction and the amidation reaction in the modification of nano-carbon materials, the present invention proposes to use water-soluble starch as the source of oxynegative ions to perform electrophilic addition to nano-carbon oxides. Modification, preparation of environmentally friendly, water-soluble starch-modified carbon nanocomposites and methods for purification

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 of water-soluble starch modified carbon nanocomposite material
  • A kind of preparation method of water-soluble starch modified carbon nanocomposite material
  • A kind of preparation method of water-soluble starch modified carbon nanocomposite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation

[0029] Under the protection of argon and a drying tube, add 50mL of dimethyl sulfoxide, 2g of sodium hydride and 2g of water-soluble starch into a 100mL round bottom flask, ultrasonically disperse for 10min, and react at room temperature for 2h under the protection of argon and with a reflux device ; Continue to add 100mg graphene oxide to the reaction bottle, and heat to 50oC for 6h.

[0030] After the reaction, the product was transferred into 50 mL of deionized water with stirring, centrifuged at 8000 rpm for 30 min, discarded most of the water supernatant, continued to dilute with pure water and centrifuged to collect the solid residue.

[0031] (2) Purification

[0032] Put the solid obtained in the previous step into a beaker, soak it with 100mL 6mol / L hydrochloric acid for 24 hours, dilute it with 150mL water the next day, let it stand for 120min, decant most of the water layer, and use a 0.45μm pore size polycarbonate membrane to soak the hydr...

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of a water-soluble-starch modified carbon nano composite material and particularly relates to a method using oxygen anion nucleophilic addition to modify the epoxy functional group, ketone carbonyl and the like in the carbon nano composite material. By the method, the dispersing performance and the heavy metal and organic pollution absorption performance of the carbon nano composite material are improved effectively.

Description

technical field [0001] The invention relates to a preparation method of water-soluble starch-modified carbon nanocomposite materials, especially under alkaline conditions, water-soluble starch generates oxygen negative ions to attack carbonyl groups and epoxy groups of oxidized carbon nanomaterials, thereby introducing water-soluble starch molecules and improving carbon nanocomposites. Dispersion properties of nanocomposites and adsorption properties of heavy metals / organic pollutants. Background technique [0002] Because of its huge specific surface area and the possibility of chemical grafting due to the existence of defects, nano-carbon materials such as carbon nanotubes, graphene, nano-carbon cones, and fullerenes are used in many fields such as catalyst supports, adsorption materials, and drug carriers. widely. Since the surface of nano-carbon materials are all 5-7 membered carbon rings, the existence of carbon-carbon bonds and a small amount of carbon-hydrogen bonds ...

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): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/205B01J20/24C02F1/288C02F2101/20
Inventor 于金刚许霞陈晓青岳宝玉
Owner CENT SOUTH UNIV