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

A kind of preparation method of copper/cuprous oxide/cyclized polyacrylonitrile visible light catalyst

A technology of polyacrylonitrile and cuprous oxide, which is applied in the direction of physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., which can solve the problems of difficult mixing, high production cost, energy High consumption and other problems, to achieve the effect of reducing photocorrosion, improving stability, and simple preparation method

Inactive Publication Date: 2017-10-13
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method requires multiple long-time high-temperature heat treatment steps, such as the formation of a microcyclized acrylonitrile oligomer solution that needs to be stirred at 100°C to 200°C for 100h to 200h, which has high energy consumption, long time consumption, and high production cost. High, and the mixing method of the polymer solid and the copper compound solid is a mechanical mixing method such as stirring, ultrasonic and ball milling, and the mixing is not easy to be uniform

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 copper/cuprous oxide/cyclized polyacrylonitrile visible light catalyst
  • A kind of preparation method of copper/cuprous oxide/cyclized polyacrylonitrile visible light catalyst
  • A kind of preparation method of copper/cuprous oxide/cyclized polyacrylonitrile visible light catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Weigh 0.20 g of polyacrylonitrile solid and dissolve it in 10.0 mL of dimethyl sulfoxide, and stir under airtight until completely dissolved. In addition, 3.36g of copper nitrate trihydrate (Cu(NO 3 ) 2 ·3H 2 O) Dissolve in 20.0 mL of dimethyl sulfoxide. Mix the obtained copper nitrate solution and polyacrylonitrile solution evenly under stirring to obtain a dimethyl sulfoxide mixed solution containing both copper nitrate and polyacrylonitrile. Weigh 1.41 g of solid sodium hydroxide and dissolve it in 100 mL of distilled water to form an aqueous sodium hydroxide solution, and add the above mixed solution of dimethyl sulfoxide dropwise to the aqueous sodium hydroxide solution under stirring for 30 minutes. After the dropwise addition, the stirring was continued for 30 minutes to obtain a nano-copper hydroxide / polyacrylonitrile suspension. Then, dissolve 1.81 g of ascorbic acid in 50 mL of distilled water to obtain an ascorbic acid aqueous solution, and add dropwise to...

Embodiment 2

[0043] Weigh 0.20 g of polyacrylonitrile solid and dissolve it in 5.0 mL of dimethyl sulfoxide, and stir until completely dissolved. Another 4.69 g of copper nitrate trihydrate was weighed and dissolved in 20.0 mL of dimethyl sulfoxide. Mix the obtained copper nitrate solution and polyacrylonitrile solution evenly under stirring to obtain a dimethyl sulfoxide mixed solution containing both copper nitrate and polyacrylonitrile. Weigh 1.80 g of solid sodium hydroxide and dissolve it in 100 mL of distilled water to form an aqueous sodium hydroxide solution, and add the above mixed solution of dimethyl sulfoxide dropwise to the aqueous sodium hydroxide solution under stirring for 40 minutes. After the dropwise addition, the stirring was continued for 60 minutes to obtain a nano-copper hydroxide / polyacrylonitrile suspension. Then dissolve 2.00 g of ascorbic acid in 50 mL of distilled water to obtain an ascorbic acid aqueous solution, and add dropwise to the above-mentioned nano-co...

Embodiment 3

[0045] Weigh 0.20 g of polyacrylonitrile solid and dissolve it in 10.0 mL of dimethyl sulfoxide, and stir under airtight until completely dissolved. Another 3.36 g of copper nitrate trihydrate was weighed and dissolved in 20.0 mL of dimethyl sulfoxide. Mix the obtained copper nitrate solution and polyacrylonitrile solution evenly under stirring to obtain a dimethyl sulfoxide mixed solution containing both copper nitrate and polyacrylonitrile. Weigh 1.41 g of solid sodium hydroxide and dissolve it in 100 mL of distilled water to form an aqueous sodium hydroxide solution, and add the above mixed solution of dimethyl sulfoxide to the aqueous sodium hydroxide solution dropwise under stirring for 60 minutes. After the dropwise addition, the stirring was continued for 60 minutes to obtain a nano-copper hydroxide / polyacrylonitrile suspension. Then, dissolve 1.81 g of ascorbic acid in 50 mL of distilled water to obtain an aqueous ascorbic acid solution, and add dropwise to the above-...

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a copper / cuprous oxide / cyclized polyacrylonitrile visible light catalyst, and belongs to the technical field of new photocatalyst materials for environmental purification. It uses polyacrylonitrile, copper nitrate and sodium hydroxide as raw materials, and prepares nano-copper hydroxide / polyacrylonitrile composites through solvent conversion and in-situ ion exchange reactions simultaneously, and then uses ascorbic acid to reduce copper hydroxide in situ to Cuprous oxide, and then heat-treated under a nitrogen atmosphere, a small amount of cuprous oxide is reduced to simple copper while polyacrylonitrile undergoes cyclization and dehydrogenation to form a conjugated structure, and copper / cuprous oxide / cyclized polyacrylonitrile visible light catalyst. The invention has wide sources of raw materials, low cost, simple preparation method, and is suitable for large-scale production. The cyclized polyacrylonitrile can not only improve the separation efficiency of photogenerated electron holes and the absorption in the visible light region, but also protect copper / cuprous oxide. , Reduce photocorrosion, the obtained catalyst has remarkable adsorption and photocatalytic effects.

Description

technical field [0001] The invention relates to a preparation method of a copper / cuprous oxide / cyclized polyacrylonitrile visible light catalyst, belonging to the technical field of new photocatalyst materials for environmental purification. Background technique [0002] Nano-semiconductor photocatalysis technology can use light energy to catalyze chemical reactions. It has the advantages of mild reaction conditions, simple operation, and environmental friendliness. It is one of the effective ways to solve environmental pollution problems. Nano-titanium dioxide is the earliest photocatalyst. It has the advantages of low price, non-toxicity and good stability and has been widely studied. However, titanium dioxide has a large band gap and can only absorb ultraviolet light for catalytic reactions. The utilization rate of sunlight is low. . Therefore, the development of high-efficiency photocatalysts with a wide response range to visible light has always been a research hotspot...

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): B01J31/28
Inventor 罗青枝张韶蕾王德松殷蓉李雪艳安静
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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