A kind of preparation method of platinum-gold nanocage and its application in catalyst

A gold nanocage and gold nanoparticle technology, which is applied in the field of synthesis of nanomaterials, can solve the problems of reduced catalytic activity and poor stability of platinum-based nanomaterials, and achieve the effects of easy implementation, easy scale-up, and cost reduction
CN109261979BActive Publication Date: 2021-06-08JIAXING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIAXING UNIV
Publication Date
2021-06-08

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Abstract

The embodiment of the present invention discloses a method for preparing a platinum-gold nanocage, which relates to the technical field of synthesis of nanomaterials. The preparation method includes the following steps: a. preparing a gold nanometer seed solution; b. preparing an angle-cut octahedral gold nanometer Particle solution; c. preparing a solution of platinum-coated octahedral gold nanoparticles; d. etching the solution of platinum-coated octahedral gold nanoparticles to obtain a platinum-gold nanocage solution of octahedrons. The preparation method uses the solution phase stepwise growth method to prepare the cut-angle octahedral gold nanoparticles, and then selectively grows platinum on the corners of the cut-angle octahedron by using the solution phase method, and finally etches most of the gold selectively to form Cutting angle octahedral platinum-gold nanocages; the self-assembly of cutting-angle octahedral platinum-gold nanocages with many corners and corners into an ordered porous film, the film has long-term stability and high specific surface area. field has great application potential.
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Description

technical field

[0001] The invention relates to the technical field of synthesis of nanomaterials, in particular to a preparation method of a platinum-gold nanocage and its application in catalysts. Background technique

[0002] Platinum catalyst is a general term for catalysts made of metal platinum as the main active component. It is mainly used for ammonia oxidation, reforming of petroleum hydrocarbons, oxidation and hydrogenation of unsaturated compounds, removal of carbon monoxide and nitrogen oxides in gases, etc. Process is a kind of catalyst often used in chemical, petroleum and chemical reaction processes. It has high catalytic activity, strong selectivity, convenient catalyst production, and low usage. Component compounding, etc., to optimize catalytic performance.

[0003] But because platinum is a rare metal, the price is relatively expensive. Therefore, in the application of industrial catalysis, special attention should be paid to improving the utilization ra...

Claims

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