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Coralline platinum-copper alloy nano-particle and preparing method thereof

A platinum-copper alloy and nanoparticle technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of harsh reaction conditions, high cost, and difficult product separation and purification, and achieve reduced harshness, mild reaction conditions, and short time Effect

Inactive Publication Date: 2016-05-04
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the first aspect of the embodiment of the present invention provides a method for preparing coral-shaped platinum-copper alloy nanoparticles to solve the problem of harsh reaction conditions, high cost, and difficulty in product separation and purification in the existing synthesis method of platinum-based double alloy nanoparticles. Moreover, the obtained platinum-based double alloy nanoparticles have poor uniformity in shape and size, etc.

Method used

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  • Coralline platinum-copper alloy nano-particle and preparing method thereof
  • Coralline platinum-copper alloy nano-particle and preparing method thereof
  • Coralline platinum-copper alloy nano-particle and preparing method thereof

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Embodiment 1

[0049] A preparation method for coral-shaped platinum-copper alloy nanoparticles, comprising the steps of:

[0050] (1) Cetyltrimethylammonium chloride (CTAC) solution of preparation 0.1mol / L, potassium tetrachloroplatinate (K 2 PtCl 4 ) solution, 1mol / L copper sulfate (CuSO 4 ) solution and the L-ascorbic acid solution of 0.1mol / L;

[0051] (2) Add the magnetic rotor, 4.4mL ultrapure water, 0.1mL cetyltrimethylammonium chloride solution prepared above, 0.3mL potassium tetrachloroplatinate solution and 1 μL copper sulfate solution to the 10 ml standard In a glass vial, and stirred for 10min, the solution was mixed evenly to obtain a mixed aqueous solution;

[0052] (3) Quickly add 0.2mL of the L-ascorbic acid solution prepared above into the mixed aqueous solution, heat in a water bath to 60°C, and stir vigorously for 2 hours;

[0053] (4) after completion of the reaction, after the gained solution was centrifuged with 12000rpm rotating speed for 10min, the supernatant was r...

Embodiment 2

[0058] A preparation method for coral-shaped platinum-copper alloy nanoparticles, comprising the steps of:

[0059] (1) Cetyltrimethylammonium chloride (CTAC) solution of preparation 0.1mol / L, potassium tetrachloroplatinate (K 2 PtCl 4 ) solution, 1mol / L copper sulfate (CuSO 4 ) solution and the L-ascorbic acid solution of 0.1mol / L;

[0060] (2) Add the magnetic rotor, 3.8mL ultrapure water, 0.1mL cetyltrimethylammonium chloride prepared above, 0.6mL potassium tetrachloroplatinate solution and 1 μL copper sulfate solution to the 10 ml glass in a vial, and stirred for 10 min, so that the solution was evenly mixed to obtain a mixed aqueous solution;

[0061] (3) Quickly add 0.4mL of the L-ascorbic acid solution prepared above into the mixed aqueous solution, heat in a water bath to 60°C, and stir vigorously for 2 hours;

[0062] (4) after completion of the reaction, after the gained solution was centrifuged with 12000rpm rotating speed for 10min, the supernatant was removed ...

Embodiment 3

[0065] A preparation method for coral-shaped platinum-copper alloy nanoparticles, comprising the steps of:

[0066] (1) Cetyltrimethylammonium chloride (CTAC) solution of preparation 0.1mol / L, potassium tetrachloroplatinate (K 2 PtCl 4 ) solution, 1mol / L copper sulfate (CuSO 4 ) solution and the L-ascorbic acid solution of 0.1mol / L;

[0067] (2) Add the magnetic rotor, 4.4mL ultrapure water, 0.1mL cetyltrimethylammonium chloride prepared above, 0.3mL potassium tetrachloroplatinate solution and 3μL copper sulfate solution to the 10ml glass into a vial, and stirred for 10 min, so that the solution was evenly mixed to obtain a mixed aqueous solution.

[0068] (3) Quickly add 0.2mL of L-ascorbic acid prepared above into the mixed aqueous solution, heat in a water bath to 60°C, and stir vigorously for 2 hours;

[0069] (4) after completion of the reaction, after the gained solution was centrifuged with 12000rpm rotating speed for 10min, the supernatant was removed to obtain a s...

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Abstract

The embodiment of the invention provides a preparing method of a coralline platinum-copper alloy nano-particle. The preparing method includes the following steps that (1) a mixed aqueous solution containing chloroplatinate, soluble copper salt and a surface active agent is prepared, wherein the surface active agent is cetyltrimethylammonium chloride; and (2) a reducing agent is added into the mixed aqueous solution, the mixed aqueous and the reducing agent are stirred in a water bath at the temperature of 60 DEG C to 90 DEG C to react for 1 hour to 3 hours, after the reaction is finished, a solution obtained after the reaction is subject to centrifugation, liquid supernatant is removed, a solid product is obtained, and the coralline platinum-copper alloy nano-particle is obtained after the solid product is washed. The preparing method is simple in process, soft in reaction condition, short in reaction time and low in cost; and the obtained coralline platinum-copper alloy nano-particle is quite uniform in size, easy to separate and good in monodispersity. The embodiment of the invention further provides the coralline platinum-copper alloy nano-particle prepared from the preparing method.

Description

technical field [0001] The invention relates to the field of noble metal catalysts, in particular to coral-shaped platinum-copper alloy nanoparticles and a preparation method thereof. Background technique [0002] The precious metal platinum is in great demand in the field of industrial catalysis, but due to the scarcity and high cost of platinum storage, the development of industrial catalysis (especially fuel cells) is greatly limited. The researchers found that the activity of platinum catalysts is closely related to its shape and size. Among them, platinum nanoparticles are widely used in the fields of heterogeneous catalysis, photocatalysis and electrocatalysis due to their efficient reduction and oxidation. In order to improve the utilization rate of platinum, researchers synthesized a series of platinum nanoparticles with different morphology and structure and high catalytic activity. For example, platinum cubes, platinum tetrahedrons, platinum octahedrons, platinum ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00
CPCB22F9/24B22F1/0553B22F1/054
Inventor 蔡林涛康申东高冠慧谢晓滨
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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