A kind of preparation method of high-efficiency graphene-based photocatalytic material

Abstract

The invention discloses a high-efficiency graphene-based photocatalytic material, comprising the following steps: adding two-dimensional graphene into distilled water, then ascorbic acid, and stirring evenly to obtain a graphene suspension; adding acrylic acid to the graphene suspension liquid, then low-temperature ultrasonic reaction for 2-4h, water bath reaction for 2-6h, and vacuum distillation reaction for 2-4h to obtain coated three-dimensional graphene; n-butyl titanate is added to absolute ethanol, and ethyl fiber is added. stir until completely dissolved to form titanium liquid; put the coated three-dimensional graphene into titanium liquid for low-temperature ultrasonic reaction for 2-4 h, take out and quickly dry to obtain three-dimensional graphene with titanium film; put the three-dimensional graphite with titanium film The graphene is placed in an infrared drying box for constant temperature drying for 2-4 hours, and then sintered at constant temperature for 1-2 hours after nitrogen purging to obtain a graphene-based photocatalytic material. The invention solves the problem that the existing photocatalytic materials are easily lost in water, and uses ethyl cellulose and polyacrylic acid to adhere the titanium dioxide on the three-dimensional graphene.

Description

technical field [0001] The invention belongs to the field of photocatalysis, in particular to a high-efficiency graphene-based photocatalytic material. Background technique [0002] In the past 20 years, with the rapid development of my country's economy, the scale and speed of the development, utilization of lake resources have been greatly strengthened, which has affected the natural evolution process of lakes and caused serious damage to lake ecosystems. With the rapid development of my country's social economy and urbanization, the problem of lake water environmental pollution has become increasingly prominent. According to the evaluation results of the national comprehensive planning of water resources, the evaluation results of the nutritional status of 84 representative lakes in the country show that: 44 lakes are in the eutrophic state throughout the year, accounting for 52.4% of the total number of evaluated lakes, and the rest of the lakes are in the mesotrophic st...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a preparation method of high-efficiency graphene-based photocatalytic materials, which solves the problem that existing photocatalytic materials are easily lost in water, and uses ethyl cellulose and polyacrylic acid as adhesives , to adhere titanium dioxide to three-dimensional graphene, effectively improve the adhesion, and form surface bonds during the sintering process to form a stable curing effect

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