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A kind of ultrafine copper-platinum alloy nanowire and preparation method thereof

A copper-platinum alloy and nanowire technology, applied in nanotechnology, nanotechnology, metal processing equipment, etc., can solve the problem of limited shape of platinum-based alloy nanoparticles, and achieve excellent catalytic activity, good crystal form, and improved performance.

Inactive Publication Date: 2019-04-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem of limited shape of existing platinum-based alloy nanoparticles, and provides an ultra-fine copper-platinum alloy nanowire and its preparation method

Method used

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  • A kind of ultrafine copper-platinum alloy nanowire and preparation method thereof
  • A kind of ultrafine copper-platinum alloy nanowire and preparation method thereof
  • A kind of ultrafine copper-platinum alloy nanowire and preparation method thereof

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specific Embodiment approach 1

[0017] Embodiment 1: The ultrafine copper-platinum alloy nanowires in this embodiment have a diameter of 3 nm to 5 nm and a length of 1.5 μm to 3 μm.

specific Embodiment approach 2

[0018] Specific embodiment two: the preparation method of the ultra-fine copper-platinum alloy nanowire described in specific embodiment one is carried out according to the following steps:

[0019] 1. Weigh platinum acetylacetonate, molybdenum hexacarbonyl and hexadecyltrimethylammonium chloride (CTAC) at a mass ratio of 1: (0.25-0.75): (1.5-2) to weigh platinum acetylacetonate and molybdenum hexacarbonyl And CTAC and be dissolved in oleylamine, obtain platinum oleylamine solution; Copper acetylacetonate is dissolved in oleylamine, obtain copper oleylamine solution; Wherein the ratio of the amount of substance of platinum acetylacetonate and copper acetylacetonate is 1:(0.3 ~3);

[0020] 2. Under the protection of nitrogen, raise the temperature of the platinum oleylamine solution to 155-170°C at a heating rate of 4-8°C / min and keep it warm for 1-1.5h, then add the copper oleylamine solution drop by drop under stirring conditions, After the dropwise addition, raise the tempe...

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the mass ratio of platinum acetylacetonate, molybdenum hexacarbonyl and CTAC (cetyltrimethylammonium chloride) described in step one is 1:0.5 : 1.8. Others are the same as in the second embodiment.

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Abstract

An ultrafine copper-platinum alloy nanowire and a preparation method thereof, the invention relates to a platinum-based alloy and a preparation method thereof. It is to solve the technical problem of the limited shape of the existing platinum-based alloy nanoparticles. The diameter of the ultrafine copper-platinum alloy nanowire of the invention is 3nm-5nm, and the length is 1.5μm-3μm. Its preparation method: 1. prepare platinum oleylamine solution containing platinum acetylacetonate, molybdenum hexacarbonyl and CTAC; then prepare copper oleylamine solution containing copper acetylacetonate; Then add copper oleylamine solution, heat up to 210-230° C. for reaction, and cool to room temperature; 3. Wash and centrifuge to obtain ultrafine copper-platinum alloy nanowires. The aspect ratio of the nano wire of the invention reaches 300-1000, and can be used as a catalyst in the fields of fuel cell, sensor, petrochemical industry, automobile industry and the like.

Description

technical field [0001] The invention relates to a platinum-based alloy and a preparation method thereof. technical background [0002] Platinum-based nanomaterials have shown good catalytic activity in fuel cells, sensors, petrochemical and automotive industries, and thus have attracted widespread attention. However, the actual storage capacity of platinum is very low and the cost of use is very high. Therefore, reducing costs and improving reaction efficiency have become the research focus of platinum-based nanomaterials. Scientists prepared platinum-based alloy catalysts by introducing non-noble metals to improve catalytic activity and stability while reducing the amount of platinum. [0003] In order to further improve the catalytic activity, scientists have conducted extensive research on the controllable formation of a large number of platinum-based alloy catalysts with different sizes, shapes, structures, and compositions. So far, the platinum-based alloy nanopartic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/24B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0547
Inventor 于永生高满意杨薇薇
Owner HARBIN INST OF TECH
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