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

Method for preparing graphene-based titanium dioxide composite photocatalyst by radiation of electron beams

A technology of electron beam irradiation and titanium dioxide, which is applied in the fields of radiation chemistry and photocatalyst preparation, can solve the problem of no graphene/titanium dioxide composite material photocatalyst, etc., and achieve good photocatalytic performance, good coating, and uniform and dense crystal grains.

Active Publication Date: 2011-11-23
安徽省通源环境节能股份有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since research on graphene is still in its infancy, to the best of our knowledge, no graphene / titania composites have been reported as photocatalysts.

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
  • Method for preparing graphene-based titanium dioxide composite photocatalyst by radiation of electron beams
  • Method for preparing graphene-based titanium dioxide composite photocatalyst by radiation of electron beams
  • Method for preparing graphene-based titanium dioxide composite photocatalyst by radiation of electron beams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Firstly, graphene is prepared according to the prior known technology (this technical method can refer to the document J.Am.Chem.Soc., 2008, 130(18), 5856-5857).

[0029] 1. Preparation of graphene

[0030] (1), preparation of graphene oxide

[0031] A certain amount of potassium persulfate (K 2 S 2 o 8 ) and phosphorus pentoxide (P 2 o 5 ) was dissolved in concentrated sulfuric acid, heated to 80°C, added a certain amount of natural graphite, kept at 80°C for 4.5 hours, and then cooled to room temperature; then diluted with deionized water, and left overnight; then filtered, washed, and the obtained filter residue was released Dry in a vacuum oven at 60°C; dissolve the dried filter residue in concentrated sulfuric acid, and slowly add potassium permanganate (KMnO 4 ), stirred at 35°C for 2 hours; then diluted with deionized water, and slowly added 30% hydrogen peroxide (H 2 o 2 ); then filter and wash, and vacuum-dry the washed product at 60° C. to obtain a gra...

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 relates to a method for preparing a graphene-based titanium dioxide composite photocatalyst by radiation of electron beams, belonging to the technical fields of radiation chemistry and photocatalyst preparation. The method comprises the following steps: firstly, preparing graphene by the prior art, then adding the graphene powder into a titanium tetrafluoride solution, and dispersing the graphene powder with ultrasonic waves to obtain a suspension; then putting the suspension in an electron beam generating device to be radiated by a certain dose of electron beams, the irradiation dose of which is 70-280KGy; after sealing, putting the suspension in an oven of 60 DEG C for reaction for 20 hours; and finally, obtaining the graphene-based titanium dioxide composite photocatalystby washing and drying. The inspection proves that the graphene-based titanium dioxide composite photocatalyst prepared by the method of the invention has higher photocatalytic activity. In addition, by inspecting with a transmission electron microscope (TEM), titanium dioxide crystals which are densely and evenly loaded on the graphene matrix can be seen.

Description

technical field [0001] The invention relates to a method for preparing a graphene-based titanium dioxide composite photocatalyst by electron beam irradiation, and belongs to the technical fields of radiation chemistry and photocatalyst preparation. Background technique [0002] Since Fujishima and Honda discovered TiO in 1972 2 Since the photo-splitting of water, researchers from various countries have paid extensive attention to semiconductor photocatalytic reactions. TiO 2 As an important semiconductor material, because of its high photocatalytic activity (strong absorption of ultraviolet light; large energy gap between forbidden band and conduction band, strong reducibility and oxidation of photogenerated electrons and holes), chemical properties Stable, non-toxic to organisms, rich sources of raw materials and other advantages, it has become a research hotspot in the field of photocatalysis. Nevertheless, nano-TiO 2 There are still certain problems in photocatalytic ...

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): B01J21/18B01J21/06B01J37/34C02F1/30C02F101/30
Inventor 张海娇焦正徐盼盼郭会娇王琳潘登余谈志金
Owner 安徽省通源环境节能股份有限公司
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