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Method for preparing textile fiber/graphene/BiVO4 composite environmental catalytic material

A technology of textile fiber and catalytic material, which is applied in the field of preparation of textile fiber/graphene/BiVO4 composite environmental catalytic material, can solve the problems of high processing cost, large loss of tearing strength, and ineffective removal, so as to accelerate photocatalysis Degradation reaction, easy industrial production, and the effect of improving photocatalytic activity

Inactive Publication Date: 2016-11-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adsorption and biological treatment are commonly used in industry. The adsorption method only transfers toxic pollutants from the liquid phase to the solid phase, but does not completely eliminate organic pollutants. The biological treatment cycle is long and the equipment occupies a large area. Biological toxicity can not be effectively removed
In contrast, advanced oxidation technologies can directly degrade dyes and other organic substances by producing strong oxidizing active species, and even completely mineralize them, which has attracted widespread attention. However, these advanced oxidation technologies also have certain limitations, such as easy to bring Secondary pollution, high treatment cost, unsuitable for large-flow wastewater treatment, and the priority removal of toxic target pollutants in the presence of a large number of organic/inorganic compounds is quite difficult, so it is very difficult to design and develop an efficient removal of toxic target pollutants in actual wastewater systems The catalytic system is of great significance
[0003] In order to construct high-efficiency micro-nano structures on the surface of textile fibers and overcome the adverse effects of the use of adhesives on the performance of catalytic fibers, the researchers tried to use the sol-gel finishing method to prepare catalytic functional fibers. The research results showed that the catalytic fibers prepared by this method The fiber has certain catalytic properties, but there are the following problems: (1) the curing of the gel must be carried out at high temperature, which has an impact on the physical and mechanical properties of the textile fiber, such as a large loss of tear strength; (2) the sol- The gel method prepares an amorphous nano-photocatalyst with no phot

Method used

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  • Method for preparing textile fiber/graphene/BiVO4 composite environmental catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 230 mL of concentrated sulfuric acid and 3 g of sodium nitrate to the beaker, cool in an ice water bath, add 10 g of graphite powder under stirring, and after the mixture is uniform, 30 g of potassium permanganate are ground and slowly added. Graphite intercalation compound; after heating to 35℃ and reacting for 30min, add 460mL deionized water and continue the reaction for 30min; then add 1400mL deionized water and 30ml 30% hydrogen peroxide in turn, the solution will change from brick red to bright yellow, continue the reaction After 10 minutes, filter, wash with 2% dilute hydrochloric acid, and then centrifuge with deionized water (8000rpm, 30min) for several times, and vacuum dry at 50°C to obtain graphene oxide. Redisperse graphene oxide in water and ultrasonic for 30 minutes. Dry the dispersion liquid in a vacuum drying oven at 40°C to obtain graphene oxide;

[0027] (2) Select hemp fiber as the carrier, use acetone solution to remove impurities on the fiber ...

Embodiment 2

[0030] (1) Add 240mL concentrated sulfuric acid and 4.5g sodium nitrate into the beaker, cool in an ice-water bath, add 10g graphite powder under stirring, after the mixing is uniform, grind 40g potassium permanganate and slowly add it, stir and react at 0℃ for 1.5h , The graphite intercalation compound is obtained; after the temperature is raised to 40℃ and the reaction is continued for 45 minutes, 530mL of deionized water is added, and the reaction is continued for 37 minutes; and then 1600mL of deionized water and 45ml of 30% hydrogen peroxide are sequentially added, and the solution changes from brick red to bright yellow. After continuing the reaction for 18 minutes, filter, wash with 3% dilute hydrochloric acid, and then wash with deionized water several times by centrifugation (8000rpm, 37min), and dry under vacuum at 60°C to obtain graphene oxide. The graphene oxide is redispersed into water and ultrasonically 340min, dry the dispersion liquid in a vacuum drying oven at ...

Embodiment 3

[0034] (1) Add 250 mL of concentrated sulfuric acid and 6 g of sodium nitrate into a beaker, cool in an ice water bath, add 10 g of graphite powder under stirring, and after the mixture is uniform, 50 g of potassium permanganate is ground and slowly added, and stirred at 0°C for 2 hours to obtain Graphite intercalation compound; After heating to 45℃ and continuing the reaction for 60 minutes, add 600mL deionized water and continue the reaction for 45 minutes; then add 1800mL deionized water and 60ml 30% hydrogen peroxide successively, the solution changes from brick red to bright yellow, continue the reaction After 25 minutes, filter, wash with 4% dilute hydrochloric acid, then wash with deionized water several times (8000rpm, 45min), and vacuum dry at 70°C to obtain graphene oxide. Redisperse graphene oxide into water and ultrasonic for 50min. Dry the dispersion liquid in a vacuum drying oven at 60°C to obtain graphene oxide;

[0035] (2) Select silk fiber as the carrier, use ac...

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
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Abstract

The invention relates to a method for preparing a textile fiber/graphene/BiVO4 composite environmental catalytic material. The method comprises the steps: dipping textile fibers into a saturated dispersion solution of graphene oxide, then, carrying out baking, carrying out washing, then, putting the textile fibers into a reducer solution, carrying out a reaction for 0.5 to 1 hour at the temperature of 50 DEG C to 80 DEG C, carrying out washing, and carrying out baking, so as to obtain textile fiber/graphene; and adding the textile fiber/graphene into a solution of Bi(NO3)3 and Na3PO4, carrying out stirring, then, adding NaVO3 and urea into the solution, carrying out a hydrothermal reaction for 3 to 8 hours at the temperature of 120 DEG C to 180 DEG C, carrying out cooling, then, carrying out washing, and carrying out baking, thereby obtaining the textile fiber/graphene/BiVO4 composite environmental catalytic material. The method disclosed by the invention is simple and is adaptable to industrial production; and the obtained composite material has a relatively good environment purification effect.

Description

Technical field [0001] The invention belongs to the field of preparation of environmental catalytic materials, and particularly relates to a textile fiber / graphene / BiVO 4 Preparation method of composite environmental catalytic material. Background technique [0002] Environmental resources are an important foundation for the survival and development of human society. The governance and protection of the environment have been running through the development history of human industrial society, and are directly related to the sustainable development of human society. The shortage of water resources is an important problem facing today's society, and the treatment of industrial wastewater has always been the top priority in the environmental field. In recent years, the treatment of some low-concentration toxic pollutants in actual wastewater, such as conjugated dyes, chlorinated aromatic compounds, polybrominated diphenyl ethers, and antibiotics, has become the focus of internationa...

Claims

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Application Information

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IPC IPC(8): B01J31/36C02F1/30C02F1/72
CPCB01J31/36B01J35/004B01J35/06C02F1/30C02F1/725C02F2101/308C02F2305/10Y02W10/37
Inventor 刘保江周德慧韩琦朱智甲林璐俞丹王炜任心澜
Owner DONGHUA UNIV