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

A kind of graphene oxide composite material modified by silver carbonate nanospheres and its preparation method and application

A composite material, silver carbonate technology, applied in chemical instruments and methods, nanotechnology, nano optics, etc., can solve the problems of instability and low catalytic activity, and achieve the effect of improving photocatalytic performance and increasing specific surface area

Inactive Publication Date: 2019-07-05
HOHAI UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved: Aiming at the problem that single nano-silver carbonate as a photocatalytic material will show instability and low catalytic activity under light conditions, the invention provides a graphene oxide composite material modified with silver carbonate nanospheres and its The preparation method and application can efficiently photocatalyze the degradation of phenol under visible light, thereby providing a photocatalytic material that can be applied to the degradation of organic pollutants in wastewater treatment systems

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 graphene oxide composite material modified by silver carbonate nanospheres and its preparation method and application
  • A kind of graphene oxide composite material modified by silver carbonate nanospheres and its preparation method and application
  • A kind of graphene oxide composite material modified by silver carbonate nanospheres and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A graphene oxide composite material modified by silver carbonate nanospheres. Rod-shaped nano-silver carbonate is modified on the surface of graphene oxide through electrostatic self-assembly and then transformed into nanospheres, with an average particle size of about 50nm.

[0027] A preparation method of a graphene oxide composite material modified by silver carbonate nanospheres, the steps are as follows:

[0028] Step 1. Under the condition of avoiding light, add 20ml 3.5mmol / L surfactant cetyltrimethylammonium bromide solution to 20ml 0.1m / L silver nitrate aqueous solution, then add 10ml 0.1m / L of sodium carbonate aqueous solution was transferred to the autoclave after being thoroughly mixed for 1 hour by magnetic stirring.

[0029] Hydrothermal reaction at 70°C for 2 hours, after the product was naturally cooled to room temperature, it was centrifuged and washed with ethanol for 3 times, and finally dried to obtain rod-shaped nano-silver carbonate;

[0030] Ste...

Embodiment 2

[0032] A graphene oxide composite material modified by silver carbonate nanospheres, the rod-shaped nanometer silver carbonate is modified on the surface of graphene oxide and then transformed into nanospheres, with an average particle size of about 100nm.

[0033] A preparation method of a graphene oxide composite material modified by silver carbonate nanospheres, the steps are as follows:

[0034] Step 1. Add 40ml of 3.5mmol / L surfactant cetyltrimethylammonium bromide solution to 40ml of 0.1m / L silver nitrate aqueous solution, and then add 20ml of 0.1m / L of sodium carbonate aqueous solution, fully mixed by magnetic stirring for 1 hour, then transferred to an autoclave, hydrothermally reacted at 70 ° C for 2 hours, after the product was naturally cooled to room temperature, it was washed with ethanol for 3 times, and finally dried to obtain Rod nano-silver carbonate;

[0035] Step 2. Ultrasonically disperse 3.0 mg of graphene oxide in ethylene glycol under light-proof condi...

Embodiment 3

[0037] A graphene oxide composite material modified by silver carbonate nanospheres. After the rod-shaped nano silver carbonate is modified on the surface of graphene oxide, it is transformed into nanospheres with an average particle size of about 70nm.

[0038] A preparation method of a graphene oxide composite material modified by silver carbonate nanospheres, the steps are as follows:

[0039] Step 1. Add 30ml 3.5mmol / L surfactant cetyltrimethylammonium bromide solution to 30ml 0.1m / L silver nitrate aqueous solution, and then add 15ml 0.1m / L of sodium carbonate aqueous solution, fully mixed by magnetic stirring for 1 hour, then transferred to an autoclave, hydrothermally reacted at 70 ° C for 2 hours, after the product was naturally cooled to room temperature, it was washed with ethanol for 3 times, and finally dried to obtain Rod nano-silver carbonate;

[0040] Step 2. Ultrasonically disperse 2.0 mg of graphene oxide in ethylene glycol under light-proof conditions. Take ...

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
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

A silver carbonate nanosphere-modified graphene oxide composite material and its preparation method and application belong to the technical field of photocatalytic nanomaterials. Rod-shaped silver carbonate nanoparticles are modified onto the surface of graphene oxide and transformed into nanospheres with a particle size of 50~100nm. The preparation method is: under light-proof conditions, add surfactant to silver nitrate solution, and then add sodium carbonate solution dropwise. After magnetic stirring and mixing, hydrothermal reaction, washing, and drying are performed to obtain rod-shaped nano silver carbonate. The graphene oxide and the obtained rod-shaped nano silver carbonate are mixed and reacted, and the product is centrifuged, washed, and dried to obtain the final product. This composite material solves the problems that nanometer silver carbonate alone as a photocatalytic material will show instability, poor reusability, and low catalytic activity under visible light conditions. It can efficiently photocatalytically degrade phenol under visible light, thereby providing a Photocatalytic materials that can be applied to the degradation of organic pollutants in wastewater treatment systems.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic nanomaterials, in particular to a graphene oxide composite material modified by silver carbonate nanospheres and a preparation method and application thereof. Background technique [0002] Photocatalytic degradation is an important technology in the field of water pollution control developed in recent years. It refers to the degradation of organic matter through a series of reactions under the dual action of light and photocatalyst to produce hydroxyl radicals and super oxygen ions with strong oxidizing ability. Decompose organic pollutants, organic matter is gradually oxidized into low-molecular intermediate products, and finally generate carbon dioxide, water and other ions such as nitrate, phosphate, chloride ions, etc., so as to realize the degradation and removal of organic pollutants. The role of photocatalysts in the photodegradation of organic matter cannot be underestimated. Semico...

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): B01J27/232B82Y20/00B82Y30/00C02F1/30C02F101/34
CPCB82Y20/00B82Y30/00C02F1/30B01J27/232C02F2101/345C02F2305/10B01J35/39Y02W10/37
Inventor 白雪梁禄禹露张琪
Owner HOHAI UNIV
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