Membrane oxide powder and preparation method and application thereof

An oxide powder, oxide technology, applied in chemical instruments and methods, graphite, semi-permeable membrane separation, etc., can solve the problems of poor hydrophilicity at the edge of graphene oxide, unfavorable water molecules passing, and cannot be applied to the field of water treatment, etc. To achieve the effect of easy industrialized large-scale production, mild and safe reaction conditions, and industrialized large-scale production

Pending Publication Date: 2021-03-05
TORAY ADVANCED MATERIALS RES LAB CHINA
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the central part of graphene oxide has been highly oxidized, and the reduction process is carried out gradually from the edge of graphene oxide to the center, this leads to the poor hydrophilicity of the edge of graphene oxide obtained, which is not conducive to the passage of water molecules, and cannot be applied to water. processing field

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
  • Membrane oxide powder and preparation method and application thereof
  • Membrane oxide powder and preparation method and application thereof
  • Membrane oxide powder and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Step (1): Add 100 g of concentrated sulfuric acid to 1 g of 325 mesh natural graphite under ice-water bath conditions, and mix for 10 minutes;

[0053] Step (2): Add 1.5 g of potassium permanganate to the mixture obtained in step (1), heat to 35° C., and mix for 1.5 hours;

[0054] Step (3): in the mixture that step (2) obtains, drip into the deionized water of 200g dropwise, then drop into the hydrogen peroxide of 15g;

[0055] Step (4): washing the product obtained in step (3) repeatedly until the pH value is 7, and freeze-drying to obtain graphite oxide powder.

Embodiment 2

[0057] Step (1): Add 100 g of concentrated sulfuric acid to 1 g of 325 mesh natural graphite under ice-water bath conditions, and mix for 10 minutes;

[0058] Step (2): Add 1.65 g of potassium permanganate to the mixture obtained in step (1), heat to 35° C., and mix for 1 hour;

[0059] Step (3): in the mixture that step (2) obtains, drip into the deionized water of 200g dropwise, then drop into the hydrogen peroxide of 15g;

[0060] Step (4): washing the product repeatedly until the pH value is 7, and freeze-drying to obtain graphite oxide powder.

[0061] Since the oxidation degree of the graphite oxide is lower than that of the traditional graphite oxide, the XRD curve of the product not only has a diffraction peak around 2θ=10°, but also has a diffraction peak around 2θ=20° at the same time.

Embodiment 3

[0063] Step (1): Add 100 g of concentrated sulfuric acid to 1 g of 325 mesh natural graphite under ice-water bath conditions, and mix for 10 minutes;

[0064] Step (2): Add 1.65 g of potassium permanganate to the mixture obtained in step (1), heat to 35° C., and mix for 1.5 hours;

[0065] Step (3): in the mixture that step (2) obtains, drip into the deionized water of 200g dropwise, then drop into the hydrogen peroxide of 15g;

[0066] Step (4): washing the product repeatedly until the pH value is 7, and freeze-drying to obtain graphite oxide powder.

[0067] Electron micrographs show that graphite oxide maintains the morphology of natural graphite raw materials, and the edge is whiter than the center due to the high degree of oxidation and poor electrical conductivity.

[0068] The optical microscope photos show that the graphite oxide is irregular in shape, and its maximum and minimum sheet diameters are relatively close.

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 provides a graphite oxide, a preparation method thereof, a membrane containing the graphite oxide and application of the membrane in the field of sea water desalination. The interlayer spacing of graphite oxide is controlled by adjusting the oxidation condition of graphite, so that water molecules can pass through the interlayer spacing capable of intercepting ions at the same time,and the requirement of seawater desalination is met. The graphite oxide has good hydrophilicity and antibacterial property, and is suitable for the field of sea water desalination.

Description

technical field [0001] The invention relates to the field of graphite materials, in particular to a graphite oxide powder and a preparation method thereof, a film containing the graphite oxide powder, and applications of the graphite oxide powder and the film in the field of seawater desalination. Background technique [0002] The earth is rich in water resources, but fresh water resources only account for 3% of the total amount of water on the earth, of which surface water only accounts for 0.3% of the total fresh water. With the increasing demand for water, the shortage of water resources that can be exploited and utilized by humans has become a problem. undeniable fact. In order to utilize seawater resources, seawater desalination is a major issue facing human beings. [0003] The key step in seawater desalination is desalination. Among all kinds of salts, the most difficult to remove are various monovalent ions, and their diameters are usually less than 10 -3 Micron. ...

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): C01B32/23B01D71/02C02F1/44C02F103/08
CPCC01B32/23B01D71/024C02F1/44C02F2103/08Y02A20/131
Inventor 杜宁杨扬吴祯琪陈桥川崎学
Owner TORAY ADVANCED MATERIALS RES LAB 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