Preparation method of PtCu alloy nanospheres

An alloy nano and complex technology, applied in the field of nano materials, can solve the problems of complex preparation technology of platinum copper alloy, existence of by-products, unsuitable for commercialization, etc., and achieve the effects of low cost, easy control and high repeatability

Inactive Publication Date: 2017-02-22
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simple, efficient and clean method for preparing a PtCu alloy for the current platinum-copper alloy preparation technology, which is complex, has by-products, and is not suitable for commercialization.

Method used

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  • Preparation method of PtCu alloy nanospheres
  • Preparation method of PtCu alloy nanospheres
  • Preparation method of PtCu alloy nanospheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Take 0.5 g of commercially available yellow-green CuCl raw material, wash CuCl with dilute HCl (5 mL) of pH = 2, obtain 5 mL of acidic solution containing white powder, let it stand, remove the supernatant, and then use deoxygenated non- Washed twice with water and ethanol, and then dried under argon atmosphere at room temperature to obtain pure CuCl white powder, as figure 1 Figures (c) and (d) in (c);

[0028] (2) Equipped with a three-necked flask under an argon atmosphere for 10ml K 2 PtCl 6 (concentration is 15mM), saturated KCl solution, 10ml deionized water to remove excess dissolved oxygen (argon gas is passed through to remove the oxygen therein);

[0029] (3) the pure CuCl white powder obtained in step (1) is all added to the saturated KCl solution that removes dissolved oxygen in advance in the 2ml step (2), due to the reaction equation (1), a colorless complex solution is formed;

[0030] (4) Quickly take 1ml of the complexing solution to 10mL of deio...

Embodiment 2

[0035] Other steps are with embodiment 1, and difference is the K in step (2) 2 PtCl 6 The concentration was changed from 15mM to 18mM. The experiment proved that the product obtained in this example was PtCu alloy nanospheres.

Embodiment 3

[0037] Other steps are with embodiment 1, and difference is the K in step (2) 2 PtCl 6 The concentration was changed from 15mM to 5mM. The experiment proved that the product obtained in this example was PtCu alloy nanospheres.

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Abstract

The invention discloses a preparation method of PtCu alloy nanospheres. The method comprises the following steps: (1) CuCl white powder is dissolved in saturated KCl solution to form colorless complexing liquid; (2) the colorless complexing liquid is filled in de-ionized water to separate out white substances; (3) the white substances are totally added in potassium chloroplatinate solution to obtain ash black solution; and (4) the ash black solution is stood to remove supernate, is added in KCl saturated solution for standing overnight, is cleaned by the de-ionized water for centrifugation, and is finally frozen and dried to prepare the PtCu alloy nanospheres. The method realizes controllable synthesis of PtCu alloy nanometer catalyst materials in a liquid phase under normal temperature and normal pressure, and obtains the PtCu alloy nanospheres with uniform size distribution; and the synthesis method is simple in process, easy to control, low in cost and high in repeatability.

Description

technical field [0001] The technical solution of the invention relates to a nanometer material, specifically a method for preparing a large amount of platinum-copper alloy nanospheres. Background technique [0002] With the rapid development of the economy, fossil fuel resources are over-exploited, and mankind is facing a serious energy crisis. Therefore, key technologies for renewable energy conversion and storage, such as fuel cells, rechargeable metal-air batteries, and photo-splitting water, are getting more and more attention. The attention of many people, especially the fuel cell technology, and the most efficient catalyst in the cathodic electrocatalytic reduction reaction in the fuel cell - Pt, because of its expensive price, extremely low storage capacity, and slow reaction power However, poor stability and anti-toxicity hinder its commercialization. By introducing a second metal component into Pt nanocatalysts, it can exhibit special electronic properties and supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00B01J23/89
CPCB22F9/24B01J23/8926B01J35/023B82Y40/00
Inventor 孟凡斌苏姣姣刘辉卢遵铭张兴华
Owner HEBEI UNIV OF TECH
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