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Platinum-copper bimetal nanoporous hollow particles and preparation method thereof

A bimetallic nanometer and hollow particle technology is applied in the field of platinum-copper bimetallic nanoporous hollow particles and their preparation, which can solve the problems of long preparation time, complicated synthesis process of platinum precursor, etc. Good dispersion effect

Active Publication Date: 2017-06-16
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the nanoparticles of the platinum-copper binary system, most of the alloy particles with uniform composition have been reported in the past, including cubes, octahedrons, dendrites, etc. The preparation method of metal nanoparticles, but the synthesis process of the platinum precursor used in this method is complicated, and the preparation time is as long as one week

Method used

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  • Platinum-copper bimetal nanoporous hollow particles and preparation method thereof
  • Platinum-copper bimetal nanoporous hollow particles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 0.017mmol of platinum acetylacetonate and 0.05mmol of copper acetylacetonate into a three-necked flask, add 8ml of oleylamine and 2mL of oleic acid, heat and stir at 130°C for 5min under the protection of argon to obtain the first mixed solution A. The first mixed solution A was quickly transferred to an oil bath at 225° C., and after the temperature was stabilized for 5 minutes, carbon monoxide was introduced to react for 30 minutes to obtain a black suspension B. After cooling to room temperature, it was washed with chloroform three times, and vacuum-dried overnight at 60° C. to obtain platinum-copper bimetallic nanoporous hollow particles.

[0028] attached figure 1 TEM image of the prepared platinum-copper bimetallic nanoporous hollow particles, attached figure 2 The high-resolution TEM image of the platinum-copper bimetallic nanoporous hollow particles prepared for figure 1 and figure 2 It can be seen that the obtained nanoporous hollow particles are com...

Embodiment 2

[0030] Weigh 0.02mmol of platinum acetylacetonate and 0.05mmol of copper acetylacetonate into a three-neck flask, add 8ml of oleylamine and 2mL of oleic acid, heat and stir at 130°C for 5min under the protection of argon to obtain the first mixed solution A. The first mixed solution A was quickly transferred to an oil bath at 220° C., and after the temperature was stabilized for 5 minutes, carbon monoxide was introduced to react for 30 minutes to obtain a black suspension B. After cooling to room temperature, it was washed with chloroform three times, and vacuum-dried overnight at 60° C. to obtain platinum-copper bimetallic nanoporous hollow particles. The platinum-copper bimetallic nanoporous hollow particles obtained in this example have similar structural properties to the platinum-copper bimetallic nanoporous hollow particles obtained in Example 1.

Embodiment 3

[0032] Weigh 0.017mmol of platinum acetylacetonate and 0.05mmol of copper acetylacetonate into a three-necked flask, add 8ml of octadecylamine and 2mL of oleic acid, heat and stir at 140°C for 5min under the protection of argon to obtain the first mixed solution A. The first mixed solution A was quickly transferred to an oil bath at 230° C., and after the temperature was stabilized for 5 minutes, carbon monoxide was introduced to react for 40 minutes to obtain a black suspension B. After cooling to room temperature, it was washed with chloroform three times, and vacuum-dried overnight at 60° C. to obtain platinum-copper bimetallic nanoporous hollow particles. The platinum-copper bimetallic nanoporous hollow particles obtained in this example have similar structural properties to the platinum-copper bimetallic nanoporous hollow particles obtained in Example 1.

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Abstract

The invention provides platinum-copper bimetallic nano-porous hollow particles and a preparation method thereof. The preparation method comprises steps as follows: 1), platinum acetylacetonate, copper acetylacetonate, alkylamine and alkyl acid are simultaneously added to a reactor for homogenizing treatment under the inertial gas shielding, and a mixed solution which is uniformly mixed is obtained; 2), the first mixed solution obtained in the step 1) is rapidly transferred to high temperature oil bath, after heat is preserved for a scheduled time, reducing gas is introduced for reaction, and a black suspension is obtained; 3), the black suspension obtained in the step 2) is sequentially subjected to organic solvent cleaning, centrifugal separation and vacuum drying, and the platinum-copper bimetallic nano-porous hollow particles are obtained. According to the nano-porous hollow particles, the shapes are uniform and stable, the dispersibility is good, and components are controllable; according to the preparation method, a one-pot oleylamine system is adopted, the platinum-copper bimetallic nano-porous hollow particles with different components are contained, used reagents are non-toxic, and the method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials, and in particular relates to platinum-copper bimetallic nano-porous hollow particles and a preparation method thereof. Background technique [0002] Noble metal nanomaterials are widely used in many fields due to their unique properties. However, the expensive price of precious metals has greatly limited the pace of its industrialization, and how to use precious metals more effectively has become a hot research topic. Preparing platinum and other noble metals and non-noble metals into bimetallic nanocatalysts not only greatly reduces the amount of noble metals, but also utilizes the electron transfer between bimetals to produce synergistic effects. [0003] Among many nanomorphologies, the porous structure greatly increases the specific surface area of ​​nanomaterials. Therefore, the nanoporous structure has better performance than solid nanoparticles, and has importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/26
Inventor 祝艳黄爽爽孙予罕
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI