Preparation method of metal icosahedral nanoparticles

An icosahedron and nanoparticle technology, which is applied in the field of preparation of metal nanomaterials, can solve the problems of poor reproducibility of the preparation process, complicated preparation process, not conforming to green chemistry, etc., and achieves reduced preparation cost, high yield, easy effect of operation
CN102019432AInactive Publication Date: 2011-04-20ANHUI NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI NORMAL UNIV
Publication Date
2011-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of metal icosahedral nanoparticles. The preparation method is as follows: at room temperature, adding polyvinylpyrrolidone into noble metal precursor aqueous solution; stirring uniformly, then adding ammonia water, and stirring for 10-30 minutes at room temperature; transferring the prepared reaction solution into a reactor, sealing and reacting for 2-10 hours at the temperature of 100-200 DEG C; after cooling, centrifuging products, collecting precipitates, and cleaning for 2-3 times by deionized water and absolute ethyl alcohol to obtain the metal icosahedral nanoparticles. Compared with the prior art, in the invention, the polyvinylpyrrolidone is used as both a surface active agent and a reducing agent, the preparation cost is obviously reduced, and water which is low in cost and easy to obtain is used as a solvent and a reaction medium, thus the synthetic method is simple and environment-friendly, is finished by one step, is easy to operate and has strong reproducibility; and the prepared product has the characteristics of high yield, high purity, uniform size distribution and the like, has excellent catalytic activity and can be used for heterogeneous organic reaction catalysis, electric catalysis, electrode materials of fuel batteries and the like.
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Description

Technical field:

[0001] The invention belongs to the technical field of preparation methods of metal nanomaterials. technical background:

[0002] The metal in the present invention refers to precious metals such as gold, silver, platinum, palladium, etc., and its nanomaterials have many excellent properties, and have important application prospects in the fields of optics, catalysis, and sensing, so they have received extensive attention. However, these unique properties are closely related to the size and shape of the material. In particular, noble metal nanoparticles with polyhedral structures usually exhibit better performance than the same materials with other shapes, and have greater advantages in the above fields. Among them, icosahedral noble metal nanoparticles have attracted more attention because of their high symmetry, thus exhibiting unique optical properties and excellent catalytic performance. Usually, noble metal nanoparticles with polyhedral structure are p...

Claims

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