Step-by-step photocatalytic preparation of tin dioxide-silver/graphene nanocomposites

A nano-composite material and graphene technology, applied in the field of nano-functional material preparation, can solve problems such as poisoning, cardiovascular and central nervous system effects, and achieve the effects of easy-to-obtain raw materials, good detection performance, and simple synthesis methods

Active Publication Date: 2019-04-02
FUZHOU UNIV
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Problems solved by technology

However, when people eat meat products added with clenbuterol, it will have serious effects on the cardiovascular and central nervous systems, and even produce symptoms of poisoning

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  • Step-by-step photocatalytic preparation of tin dioxide-silver/graphene nanocomposites
  • Step-by-step photocatalytic preparation of tin dioxide-silver/graphene nanocomposites
  • Step-by-step photocatalytic preparation of tin dioxide-silver/graphene nanocomposites

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Embodiment Construction

[0032] In order to make the content of the present invention easier to understand, the technical solutions of the present invention will be further described below in conjunction with specific embodiments, but the present invention is not limited thereto.

[0033]Step-by-step photocatalytic preparation of SnO using tin dioxide as photocatalyst 2 - the method for silver / graphene nanocomposite material, its concrete steps are:

[0034] (1) SnO 2 - Preparation of AgNPs: In a quartz reactor, 2 mL of 6.5 mM SnO 2 (tetragonal crystal system, particle radius is about 7-9nm) ethanol suspension mixed with 2mL, 13 mM AgNO 3 mixed with ethanol solution, ultrasonically treated for 30 minutes, and nitrogen gas was introduced for 10 minutes to remove the oxygen in the reaction system, and then under nitrogen atmosphere, the ultraviolet-visible light source (xenon lamp: 300W, λ=320-780nm) was continuously irradiated for 30 minutes, and at the same time Keep stirring to form SnO containing...

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Abstract

The invention discloses a method for preparing tin dioxide-silver / graphene nano-composite materials by means of step-by-step photocatalysis. The method includes carrying out photocatalytic reduction on silver nitrate by the aid of SnO2 under the protection of nitrogen via ultraviolet visible light irradiation to obtain silver ions so as to form directional growth SnO2-nano-silver heterogeneous structures; carrying out photocatalytic reduction oxidation on graphene under nitrogen protection and stirring conditions via ultraviolet visible light irradiation to obtain the SnO2-silver / graphene nano-composite materials. The SnO2 is used as a photocatalyst. The method has the advantages that the SnO2-silver / graphene nano-composite materials prepared by the aid of the method are good in dispersibility, high in electric conductivity and excellent in stability and can be used for high-sensitivity electrochemical detection on ractopamine, and the like.

Description

technical field [0001] The invention belongs to the field of preparation of nanometer functional materials, and in particular relates to a method for preparing tin dioxide-silver / graphene nanocomposite material by step-by-step photocatalysis using tin dioxide as a photocatalyst. Background technique [0002] Light is an ideal green reagent in chemical synthesis, and we can design new chemical systems through photocatalytic synthesis, such as preparing C-C bonds and modifying related chemical groups. Inspired by this, a large number of scientific researchers have devoted themselves to the research of photocatalytic synthesis, especially in the development of drugs, fine chemicals and advanced materials. According to literature reports, products such as benzophosphoric acid oxides, aromatic ketones and tris-2,2'-bipyridyl-ruthenium(II) have been successfully synthesized by photocatalytic methods. Using this method to synthesize compounds has many advantages. For example, phot...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/19G01N27/48
CPCC01B2204/22C01B2204/32C01P2002/72C01P2004/04G01N27/48
Inventor 潘海波谢文强汤乐乐应美慧刘俊劭谢文菊
Owner FUZHOU UNIV
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