Method for compositing iron oxide and graphene by virtue of hydrothermal process

A technology of ferric chloride hexahydrate and graphene, which is applied in the fields of graphene, energy wastewater treatment, light water/sewage treatment, etc., can solve the problems of unremarkable photocatalytic performance, high photogenerated electron-hole recombination rate, and photon quantum efficiency. Low-level problems, to achieve high industrial production value, high utilization rate, and good dispersion

Inactive Publication Date: 2014-02-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since iron oxide has a wide band gap, it mainly absorbs ultraviolet light in the solar spectrum, which is extremely unfavorable for the use of sunlight with only 4% ultraviolet light content; in addition, the photogenerated electron-hole generated by the excitation of iron oxide by sunlight The high recombination rate leads to low photon quantum efficiency and unremarkable photocatalytic performance, which is also the main reason why iron oxide photocatalysts are limited in practical applications.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Weigh 692 mg of ferric chloride hexahydrate and 20 mg of graphene oxide, and dissolve them in 150 mL of deionized water.

[0024] 2) Sonicate the above solution for 1 h.

[0025] 3) Put in the magnetic sub, magnetic stirring for 2h.

[0026] 4) Pour the stirred solution into a high-pressure reactor, put it into an electric heating constant temperature drying oven, and react at a temperature of 200°C for 12 hours.

[0027] 5) After centrifugal washing and vacuum drying, the composite of iron oxide and graphene can be obtained; the mass ratio of iron oxide and graphene in the obtained composite is 16:1, and the iron oxide presents an oblique hexagonal shape with a particle size of about 100nm , which are uniformly dispersed and attached in graphene sheets.

Embodiment 2

[0029] 1) Weigh 346 mg of ferric chloride hexahydrate, 20 mg of graphene oxide, and 10 mg of ammonium dihydrogen phosphate, and dissolve them in 150 mL of deionized water.

[0030] 2) Sonicate the above solution for 1 h.

[0031] 3) Put in the magnetic sub, magnetic stirring for 2h.

[0032] 4) Pour the stirred solution into a high-pressure reactor, put it into an electric heating constant temperature drying oven, and react at a temperature of 200°C for 12 hours.

[0033] 5) After centrifugal washing and vacuum drying, the composite of iron oxide and graphene can be obtained; the mass ratio of iron oxide and graphene in the obtained composite is 8:1, and the iron oxide is in the shape of rice grains with a particle size of about 100nm. Uniformly dispersed and attached to graphene sheets.

Embodiment 3

[0035] 1) Weigh 346 mg of ferric chloride hexahydrate, 20 mg of graphene oxide, and 100 mg of sodium hydroxide, and dissolve them in 150 mL of deionized water.

[0036] 2) Sonicate the above solution for 1 h.

[0037] 3) Put in the magnetic sub, magnetic stirring for 2h.

[0038] 4) Pour the stirred solution into a high-pressure reactor, put it into an electric heating constant temperature drying oven, and react at a temperature of 200°C for 12 hours.

[0039] 5) The composite of iron oxide and graphene can be obtained by centrifugal washing and vacuum drying; the mass ratio of iron oxide and graphene in the obtained composite is 8:1, and the iron oxide is in the shape of a strip with a length of about 150nm, which is uniform dispersed and attached to graphene sheets.

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 method for compositing iron oxide and graphene by virtue of a hydrothermal process. The method comprises the following steps: 1) dissolving hexahydrate ferric trichloride and oxidized graphene, (ammonium dihydrogen phosphate and sodium hydroxide) in a certain amount of deionized water to obtain a solution; 2) ultrasonically treating the solution for 1 hour; 3) putting magnetons in the solution and magnetically stirring the solution for 2 hours; 4) pouring the stirred solution into a high-pressure reaction kettle, putting the high-pressure reaction kettle into an electrothermal constant-temperature drying oven and reacting the solution for a period of time at preset temperature; and 5) performing centrifugal washing and vacuum drying to obtain a composite of iron oxide and graphene. The composite precipitate prepared by virtue of the hydrothermal process has controllable particle size, good dispersibility, high utilization rate of sunlight, excellent electronic transmission performance, as well as excellent properties in the application aspects of photo-catalytically degrading organic pollutants and serving as a negative material of a novel lithium battery, thereby having a high industrial production value.

Description

technical field [0001] The invention relates to a method for compounding iron oxide and graphene by a hydrothermal method. Background technique [0002] Combination of iron oxide and graphene and its application in photocatalytic degradation of organic pollutants and as a negative electrode material for lithium batteries have been research hotspots in recent years; among many methods of compounding iron oxide and graphene, hydrothermal It is an extremely simple and efficient method. [0003] Iron oxide (iron oxide) is quite abundant on the surface, it is the main component of rust, widely distributed in water, soil and rocks. Iron oxide is an n-type semiconductor, which is widely used in electrochromic, gas-sensitive sensors and photoelectrochemical devices. Because iron oxide has a narrow band gap width, it has a strong light absorption ability in the visible light region and can absorb Using about 30% of the solar energy, it is of great significance to study the applicat...

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): H01M4/1393C02F1/32C01B31/04C01B32/184
CPCY02E60/122C01B32/182H01M4/364H01M4/505H01M4/625Y02E60/10Y02W10/37
Inventor 郭亮亮孙富华靳栋梁于濂清
Owner CHINA UNIV OF PETROLEUM (EAST 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