Graphene-based composite material and preparation method thereof

A graphene and composite technology, applied in the field of photocatalytic materials, can solve problems such as unsatisfactory degradation effect of aqueous solution, and achieve the effect of easy photocatalytic reaction

Pending Publication Date: 2020-11-10
兰东辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The photocatalytic effect of the catalyst on air purification is acceptable, but the degradation effect on aqueous solution is not ideal

Method used

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  • Graphene-based composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of preparation method of photocatalytic material based on graphene, concrete steps are as follows:

[0032] (1) First, bismuth chloride and liquid polyacrylonitrile are used as raw materials to make bismuth-graphene composites;

[0033] (2) Then the bismuth-graphene complex is mixed with bismuth oxyiodide and chloroplatinic acid to obtain a prefabricated body;

[0034] (3) Finally, the prefabricated body is prepared into a suspension, and the α-naphthylamine monomer is added dropwise, and undergoes a polymerization reaction to obtain the described photocatalytic material based on graphene;

[0035] Wherein, the bismuth oxyiodide is obtained by hydrothermal reaction using potassium iodide solution and bismuth salt as raw materials; the preform is first pretreated and then prepared into a suspension, and the specific method is: the preform is mixed with oxygen and nitrogen Heat treatment is performed to form metal oxynitride on the surface of the preform.

[0036...

Embodiment 2

[0047] A kind of preparation method of photocatalytic material based on graphene, concrete steps are as follows:

[0048] (1) First, bismuth chloride and liquid polyacrylonitrile are used as raw materials to make bismuth-graphene composites;

[0049] (2) Then the bismuth-graphene complex is mixed with bismuth oxyiodide and chloroplatinic acid to obtain a prefabricated body;

[0050] (3) Finally, the prefabricated body is prepared into a suspension, and the α-naphthylamine monomer is added dropwise, and undergoes a polymerization reaction to obtain the described photocatalytic material based on graphene;

[0051] Wherein, the bismuth oxyiodide is obtained by hydrothermal reaction using potassium iodide solution and bismuth salt as raw materials; the preform is first pretreated and then prepared into a suspension, and the specific method is: the preform is mixed with oxygen and nitrogen Heat treatment is performed to form metal oxynitride on the surface of the preform.

[0052...

Embodiment 3

[0063] A kind of preparation method of photocatalytic material based on graphene, concrete steps are as follows:

[0064] (1) First, bismuth chloride and liquid polyacrylonitrile are used as raw materials to make bismuth-graphene composites;

[0065] (2) Then the bismuth-graphene complex is mixed with bismuth oxyiodide and chloroplatinic acid to obtain a prefabricated body;

[0066] (3) Finally, the prefabricated body is prepared into a suspension, and the α-naphthylamine monomer is added dropwise, and undergoes a polymerization reaction to obtain the described photocatalytic material based on graphene;

[0067] Wherein, the bismuth oxyiodide is obtained by hydrothermal reaction using potassium iodide solution and bismuth salt as raw materials; the preform is first pretreated and then prepared into a suspension, and the specific method is: the preform is mixed with oxygen and nitrogen Heat treatment is performed to form metal oxynitride on the surface of the preform.

[0068...

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Abstract

The invention provides a graphene-based photocatalytic material. The graphene-based photocatalytic material is prepared by the following steps: preparing a bismuth-graphene complex from bismuth chloride and liquid polyacrylonitrile as raw materials; mixing and reacting the bismuth-graphene complex with bismuth oxyiodide and chloroplatinic acid to obtain a prefabricated body; and finally, preparinga suspension from the prefabricated body, dropwise adding an alpha naphthylamine monomer, and carrying out polymerization reaction to obtain the graphene-based self-cleaning photocatalytic material.Herein, before the suspension is prepared, the prefabricated body is subjected to heat treatment by using mixed gas of oxygen and nitrogen, so that metal nitrogen oxide is formed on the surface of theprefabricated body. According to the invention, the photocatalytic material has a very good photocatalytic degradation effect on pollutants in air and an aqueous solution.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a graphene-based photocatalytic material and a preparation method thereof. Background technique [0002] With the rapid development of the economy and the continuous consumption of traditional energy, the global environmental pollution and energy crisis are becoming more and more serious. Photocatalytic technology is expected to be a green way to use solar energy to treat the polluted environment and prepare fossil fuel alternative energy. , has received more and more attention. Photocatalytic technology is one of the research fields of cutting-edge science. It is a material that can promote chemical reactions under the irradiation of light without changing itself. At present, photocatalysts are used in environmental restoration, clean energy production, carbon modification and chemical synthesis to solve energy and environmental pollution problems in a sustaina...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B01J31/06B01J31/26B01J35/00B01J37/08B01J37/16B01J37/34C02F1/30B01D53/86
CPCB01J31/069B01J31/26B01J37/08B01J37/084B01J37/16B01J37/345C02F1/30B01D53/86C02F2305/10B01J35/39
Inventor兰东辉
Owner兰东辉