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Preparation method of wheat head-shaped Te-Pt alloy nanowire

A technology of alloy nano and wheat ear shape, which is applied in the field of preparation of Te-Pt alloy nanowires, can solve the problems of expensive use of precious metal platinum, high cost of fuel cell production, and influence on catalytic performance, and achieve good stability and smooth preparation process. Simple, easy-to-scale effects

Active Publication Date: 2016-07-06
德清久蕴材料科学研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the commercial use of platinum catalysts is large, but there are major problems with platinum catalysts: (1) The use of noble metal platinum is expensive and resources are scarce, which leads to high production costs of fuel cells. Therefore, it is necessary to further reduce the content of platinum and increase the catalyst activity; (2) Some intermediate products such as CO will be adsorbed on the surface of the catalyst during the methanol process and affect the catalytic performance. It is necessary to adjust the morphology, structure and type of the catalyst to improve the performance and stability of the catalyst; (3) develop Seeking a reasonable synthetic method for preparing catalysts, making them low-cost, simple-process and easy-to-control catalysts

Method used

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  • Preparation method of wheat head-shaped Te-Pt alloy nanowire
  • Preparation method of wheat head-shaped Te-Pt alloy nanowire

Examples

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Effect test

Embodiment 1

[0016] A method for preparing wheat ear-shaped Te-Pt alloy nanowires includes the following steps:

[0017] 1) Use a tellurium source to prepare tellurium nanowires, weigh 1 part of the tellurium nanowires into a beaker containing 25 parts of absolute ethanol, and stir magnetically for 30 minutes to make the dispersion uniform;

[0018] 2) Take the dispersion solution obtained in step 1), add the required platinum source at a molar ratio of tellurium to platinum of 10:1, disperse it in ultrapure water, put it in a polytetrafluoroethylene lining, and move it into the reactor After 4 hours of hydrothermal reaction, the finished product of wheat ear-shaped Te-Pt alloy nanowire is obtained.

[0019] In this way, a wheat ear-shaped platinum tellurium alloy nanowire with a diameter of 25 nanometers can be prepared. In a microscopic state, the platinum tellurium alloy nanowires with a large aspect ratio are intertwined with each other, exposing a large active area and having regular micro-n...

Embodiment 2

[0021] A method for preparing wheat ear-shaped Te-Pt alloy nanowires includes the following steps:

[0022] 1) Use tellurium source to prepare tellurium nanowires, weigh 3 parts of tellurium nanowires into a beaker containing 35 parts of absolute ethanol according to mass parts, and magnetically stir for 40 minutes to make the dispersion uniform;

[0023] 2) Take the dispersion solution obtained in step 1), add the required platinum source at a molar ratio of tellurium to platinum of 10:10, disperse it in ultrapure water, put it in a polytetrafluoroethylene lining, and move it into the reactor After 5 hours of hydrothermal reaction, the finished product of wheat ear-shaped Te-Pt alloy nanowire is obtained.

Embodiment 3

[0025] A method for preparing wheat ear-shaped Te-Pt alloy nanowires includes the following steps:

[0026] 1) Use a tellurium source to prepare tellurium nanowires. According to mass parts, weigh 5 parts of tellurium nanowires and add them to a beaker containing 50 parts of absolute ethanol, and magnetically stir for 50 minutes to make the dispersion uniform;

[0027] 2) Take the dispersion solution obtained in step 1), add the required platinum source at a molar ratio of tellurium to platinum of 10:80, disperse it in ultrapure water, put it in a polytetrafluoroethylene lining, and move it into the reactor After 6 hours of hydrothermal reaction, the finished product of wheat ear-shaped Te-Pt alloy nanowire is obtained.

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Abstract

The invention relates to a preparation method of a Te-Pt alloy nanowire, in particular to a preparation method of a wheat head-shaped Te-Pt alloy nanowire. The method comprises the following steps: (1) preparing a tellurium nanowire from a tellurium source, adding weighed 1-5 parts of tellurium nanowire to a beaker containing 25-50 parts of absolute ethyl alcohol in parts by weight, and carrying out magnetic stirring for 30-50 minutes for uniform dispersion; and (2) adding a required platinum source to taken dispersion solution obtained in the step (1) at the molar ratio of tellurium atoms to platinum atoms being 10 to (1-100), dispersing the solution into ultrapure water, putting the solution into a polytetrafluoroethylene lining and transferring the solution into a reaction kettle for hydrothermal reaction for 4-6 hours, namely obtaining the wheat head-shaped Te-Pt alloy nanowire product. The method is simple in preparation process; and the conditions are easy to control. According to the prepared wheat head-shaped Te-Pt alloy nanowire of which the diameter is about 25nm, the Te-Pt alloy nanowires with a large length-diameter ratio are interwoven with one another in a microstate; large active area is exposed; and the wheat head-shaped Te-Pt alloy nanowire has a regular micro-nano structure, high catalytic activity and good stability.

Description

Technical field [0001] The invention relates to a method for preparing a Te-Pt alloy nanowire, in particular to a method for preparing a wheat ear-shaped Te-Pt alloy nanowire. Background technique [0002] At present, the amount of commercial platinum catalysts is large, but there are major problems with platinum catalysts: (1) The use of precious metal platinum is expensive and resources are scarce, resulting in high production costs for fuel cells. Therefore, it is necessary to further reduce the platinum content and increase the catalyst. (2) Some intermediate products such as CO will be adsorbed on the surface of the catalyst during the methanol process and affect the catalytic performance. The morphology and type of the catalyst must be adjusted to improve the performance and stability of the catalyst; (3) Development Seek a reasonable synthesis method for preparing the catalyst, making it a catalyst with low cost, simple process and easy control. The above three problems h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/92H01M4/88B82Y30/00B82Y40/00
CPCH01M4/88H01M4/90H01M4/92H01M4/921B82Y30/00B82Y40/00Y02E60/50
Inventor 王騊王晟欧阳申珅彭美灵
Owner 德清久蕴材料科学研究有限公司
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