Copper-bearing bimetallic nanometer material with dentritic structure and method for manufacturing copper-bearing bimetallic nanometer material

Abstract

The invention discloses a copper-bearing bimetallic nanometer material with a dentritic structure and a method for manufacturing the copper-bearing bimetallic nanometer material. The method includes manufacturing procedures of adding surfactants and mixed solution containing copper and another metal precursor into water solution; adding moderate reducing agents into the water solution to reduce the water solution. The copper-bearing bimetallic nanometer material and the method have the advantages that the dentritic nanometer structure is single in morphology and uniform in size, and components of the copper-bearing bimetallic nanometer material are controllable; raw materials required in the method are cheap and are easily available, the preparation procedures are simple and convenient, elapsed reaction time is short, and safe operation can be implemented; the dentritic nanometer structure can have important application in the catalysis and electrochemistry fields.

Description

technical field [0001] The invention relates to a copper-containing bimetallic nanometer material with a dendritic structure and a preparation method thereof. Background technique [0002] Metal nanomaterials with a dendritic structure have many applications in the fields of catalysis, electrochemistry, and optics due to their porous, large specific surface area, rough surface, and possible high-index crystal planes. Therefore, metal nanomaterials with a dendritic structure Materials and their preparation and applications have received extensive attention from researchers. [0003] Most of the current reports on dendritic metal nanomaterials are monometallic structures, but there are relatively few reports on dendritic bimetallic nanostructures. The seeding method is one of the most commonly used methods for preparing dendritic bimetallic nanostructures. For example, the Eichhorn group used gold nanoparticles as seeds to reduce platinum acetylacetonate in an organic solven...

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Problems solved by technology

Subsequently, Xia Younan's research group also reported a simple aqueous phase synthesis route, using palladium nanocrystals as crystal nuclei, and synthesizing three-dimensional Pd-Pt dendritic morphology by reducing potassium chloroplatinate with ascorbic acid, although this method can accurately control bimetallic The morphology and composition of nanocrystals, but there are still some limitations, such as high temperature may be required in the synthesis process, and the synthesis process needs to be carried out step by step, which is relatively complicated

In addition, the Yamauchi research group reported a method for synthesizing dendritic bimetallic nanostructures in one step, mainly by adding the precursors of Au and Pt to the aqueous solution containing the F127 protective agent, and then reducing them with ascorbic acid to obtain a core-shell structure. The AuPt dendritic bimetallic nanocrystals can also synthesize three-component AuPdPt and Pt-on-Pd dendritic structures using a similar process. Although this method is completed in one step, the operation is simple and convenient, and it is not time-consuming, but this method is currently only applicable to Platinum-containing bimetallic systems

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