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Amorphous-state copper-platinum alloy nanotube and preparation method thereof

A copper-platinum alloy, amorphous technology, applied in the field of nano-electrocatalytic material preparation, can solve the problems of CO poisoning, deactivation, poor durability, etc., and achieve the effects of simple preparation conditions, fast reaction and high product conversion rate

Active Publication Date: 2015-04-08
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to problems such as high price, poor durability, and susceptibility to CO poisoning and deactivation, the application of metal platinum in direct methanol fuel cells has been severely limited.

Method used

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  • Amorphous-state copper-platinum alloy nanotube and preparation method thereof
  • Amorphous-state copper-platinum alloy nanotube and preparation method thereof
  • Amorphous-state copper-platinum alloy nanotube and preparation method thereof

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Embodiment 1

[0027] Preparation of copper nanowires: First, add 150-300 g of sodium hydroxide and 5-8 mL of ethylenediamine into 500 mL of deionized water under mechanical stirring as pH regulator and morphology control agent, and then add 20- 40 mL of 0.1mol / L copper nitrate solution was used as the precursor salt, then 0.5-2 mL of hydrazine hydrate was added as the reducing agent, and the reaction was carried out in a water bath at 60°C-90°C for 30-60 minutes, and the product was deoxidized by nitrogen gas. Filter and wash with deionized water, and dry in vacuum to obtain copper nanowires.

[0028] Pretreatment of copper nanowires: first pretreat copper nanowires with 0.1 mol / L dilute hydrochloric acid to remove oxides and other basic impurities on the surface, then rinse with deionized water that has been passed through nitrogen to remove oxygen, and finally put Dry in a vacuum oven at 60°C for 12 hours.

[0029] The configuration of the mixed solution of chloroplatinic acid and sodium...

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Abstract

The invention relates to an amorphous-state copper-platinum alloy nanotube and a preparation method of the amorphous-state copper-platinum alloy nanotube. The method comprises the following steps: preparing copper nanowires by cupric nitrate serving as a precursor salt, NaOH serving as a pH regulator, ethanediamine serving as a complexing agent and hydrazine hydrate serving as a reducing agent; adding the complexing agent into chloroplatinic acid solutions for ultrasonically and uniformly dispersing; adding the copper nanowires into the chloroplatinic acid solutions for reacting, filtering, washing and drying to obtain a product. The amorphous-state copper-platinum alloy nanotube is simple in preparation condition, rapid in reaction, high in product conversion rate, and high in methanol oxidation electro-catalytic property.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer electrocatalytic materials, and in particular relates to an amorphous copper-platinum alloy nanotube with a high aspect ratio and a simple and large-scale preparation method. Background technique [0002] Methanol oxidation is one of the key electrode reactions in direct methanol fuel cells. So far, metallic platinum has been considered as a highly efficient electrocatalytic material for methanol oxidation. However, due to problems such as high price, poor durability, and susceptibility to CO poisoning and deactivation, the application of metal platinum in direct methanol fuel cells has been severely limited. In recent years, amorphous metal materials have attracted extensive attention due to their high electrocatalytic effect on methanol oxidation. [0003] Amorphous metal materials are thermodynamically unstable or metastable because their structure is different from that of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B01J23/89B82Y30/00B82Y40/00
Inventor 刘景军王峰刘晨光宋夜李志林吉静窦美玲覃事永张良虎康建忠
Owner BEIJING UNIV OF CHEM TECH