Preparation method of a self-floating carbon nitride/cellulose acetate flexible photocatalytic porous film

A cellulose acetate, porous film technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of solution contact area and light absorption properties, etc. To achieve the effect of promoting photocatalytic performance, improving stability, and enhancing binding capacity

Inactive Publication Date: 2020-10-30
SHANDONG AGRICULTURAL UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the photocatalytic material prepared by it is a bulk material, and the contact area with the solution and the light absorption performance are affected.

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
  • Preparation method of a self-floating carbon nitride/cellulose acetate flexible photocatalytic porous film
  • Preparation method of a self-floating carbon nitride/cellulose acetate flexible photocatalytic porous film
  • Preparation method of a self-floating carbon nitride/cellulose acetate flexible photocatalytic porous film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] In one embodiment of the present invention, the preparation method of the provided photocatalytic thin film material comprises the following steps:

[0040] 1) Preparation of oxidized acidified carbon nitride:

[0041] Add carbon nitride powder prepared by conventional calcination into concentrated sulfuric acid solution and stir for 8-12 hours, then pour into deionized water with a volume ratio of 1:8-1:12, ultrasonicate for 8-12 hours, and centrifuge in deionized water After washing for 4 to 6 times and drying at 60°C, sulfuric acid oxidized acidified carbon nitride can be obtained. Among them, the reagents for oxidizing and acidifying carbon nitride include nitric acid in addition to sulfuric acid.

[0042] 2) Preparation of carbon nitride and cellulose acetate mixed solution:

[0043] Disperse the carbon nitride prepared in step 1) into the acetone solution so that the concentration of the added carbon nitride is 10g / L, 20g / L, 30g / L, 40g / L, 50g / L respectively, and...

Embodiment 1

[0049] (1) Carbon nitride is obtained by calcining melamine at 550 degrees Celsius for 4 hours. After the obtained carbon nitride is ground evenly, it is added to concentrated sulfuric acid at a mass ratio of 1:20, magnetically stirred for 8 hours, and then poured into the In deionized water, the volume of deionized water is 10 times the volume of concentrated sulfuric acid, sonicated for 8 hours, centrifuged and washed 4 times, and dried at 60°C to obtain carbon nitride oxidized and acidified by sulfuric acid.

[0050] (2) Take by weighing 0.5 g of the carbon nitride obtained by the sulfuric acid oxidation acidification obtained in step (1), join in 10 mL of acetone solution, ultrasonic 4h, then weigh 0.5 g of cellulose acetate, join in the above-mentioned carbon nitride dispersion, Sonicate for 30 minutes to obtain a carbon nitride / cellulose acetate dispersion.

[0051] (3) Pour the carbon nitride / cellulose acetate dispersion prepared in step (2) onto a clean glass plate, sc...

Embodiment 2

[0053] (1) Carbon nitride is obtained by calcining melamine at 550 degrees Celsius for 4 hours. After the obtained carbon nitride is ground evenly, it is added to concentrated nitric acid according to the mass ratio of 1:20, magnetically stirred for 8 hours, and then poured into the In deionized water, the volume of deionized water is 10 times the volume of concentrated nitric acid, ultrasonicated for 8 hours, centrifuged and washed 4 times, and dried at 60°C to obtain carbon nitride oxidized and acidified by nitric acid.

[0054] (2) Take by weighing 0.5 g of the carbon nitride oxidized and acidified by nitric acid obtained in step (1), add it to 10 mL of acetone solution, ultrasonicate for 4 hours, then weigh 0.5 g of cellulose acetate, and add it to the above-mentioned carbon nitride dispersion, Sonicate for 30 minutes to obtain a carbon nitride / cellulose acetate dispersion.

[0055] (3) Pour the carbon nitride / cellulose acetate dispersion prepared in step (2) onto a clean ...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a self-floating carbon nitride / cellulose acetate flexible photocatalysis porous film. The method is characterized in that graphite phase carbon nitrideundergone oxidation acidification by strong oxidizing acid is used as a raw material and is mixed with cellulose acetate to form a uniformly-mixed solution, and then the uniformly-mixed solution is paved to form a film by a simple scrapping technology so as to obtain the self-floating, stable, flexible and porous carbon nitride / cellulose acetate photocatalysis film. According to the method, the film preparation technology overcomes the problem of poor combining capacity of a photocatalysis material and a polymer, and the photocatalysis material recycling performance is improved; the preparedporous photocatalysis film material has a wide application prospect in the fields such as the fields of environmental pollutant treatment, photocatalysis oxygen production and photocatalysis sterilizing.

Description

technical field [0001] The invention relates to the technical field of photocatalytic material preparation, in particular to a method for preparing a self-floating carbon nitride / cellulose acetate flexible photocatalytic porous film. Background technique [0002] Graphite carbon nitride (g-C 3 N 4 ) is a non-metal polymer semiconductor material. Its bandgap width (E g ) is about 2.7eV, which is a photocatalytic material responsive to visible light. Simultaneously g-C 3 N 4 The source of raw materials is abundant, low in cost and non-toxic. Therefore, graphitic carbon nitride has shown broad application prospects in the fields of photocatalytic degradation of environmental organic pollutants, photocatalytic sterilization, and photocatalytic water splitting to produce hydrogen. [0003] With the rapid development of photocatalytic technology research, various types of photocatalytic materials have been successfully prepared. Among them, the size of most 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): B01J31/06B01J27/24B01J35/10C02F1/30C02F101/38
Inventor 范海艾仕云王思羽程娟毛志泉代晓辉
Owner SHANDONG AGRICULTURAL UNIVERSITY
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