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Preparation method for nanorod-cluster-shaped Pt

A nanorod and cluster technology, which is applied in the field of preparation of nanorod cluster Pt, can solve the problem of high cost of platinum catalyst and achieve the effects of high electrochemical stability, large specific surface area and simplified preparation method

Inactive Publication Date: 2018-10-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as one of the rarest elements in the earth's crust (5 parts per billion), platinum catalysts are extremely expensive

Method used

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  • Preparation method for nanorod-cluster-shaped Pt
  • Preparation method for nanorod-cluster-shaped Pt
  • Preparation method for nanorod-cluster-shaped Pt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of nanorod cluster Pt, comprising the steps of:

[0030] Put 3.53g of octadecylamine in a glass screw-top reagent bottle, heat and melt at 60°C to a colorless and clear solution;

[0031] 8 mg of platinum acetylacetonate was added to the colorless clear solution, and the solution was ultrasonicated above 60°C to a light yellow-green clear solution;

[0032] The above clarified mixed solution was placed in an oil bath at 170°C for 10 h. After the reaction is complete, the cooled reaction system is solid and melted after heating at about 60°C. Add an appropriate amount of a mixed solution of ethanol and cyclohexane with a volume ratio of 8:1, shake and wash thoroughly, and centrifuge at more than 8000 per minute. For more than 10 minutes, wash for more than five times and then wash with absolute ethanol for more than three times. The washed product was dispersed in 1ml of absolute ethanol for subsequent testing.

[0033] The SEM image of nanorod cl...

Embodiment 2

[0041] A preparation method of nanorod cluster metal Pt, comprising the steps of:

[0042] Put 3.45g of hexadecylamine in a glass screw-top reagent bottle, and heat and melt at 55°C to a colorless and clear solution;

[0043] 8 mg of platinum acetylacetonate was added to the colorless clear solution, and the solution was ultrasonicated above 60°C to a light yellow-green clear solution;

[0044] The above clarified mixed solution was placed in an oil bath at 170°C for 10 h.

[0045] The preparation method described in this example can effectively prepare nanorod cluster Pt, from Figure 6 The SEM image of the nanorod cluster Pt can be observed as a radial structure, and its overall size is 200nm to 250nm. Each nanorod cluster Pt is composed of about 20 to 50 nanorods, and each nanorod is about 75nm to 125nm long. The diameter is about 5nm to 10nm, and the nanorod cluster structure is uniform, the dispersion degree is small, and the orientation of the nanorods on each nanorod ...

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Abstract

The invention discloses a preparation method for nanorod-cluster-shaped Pt. Advanced fatty amine is heated and molten into colorless clear solution; pentanedione platinum is added, and ultrasonic treatment is conducted at the temperature above 55 DEG C till light yellow-green clear solution is obtained; and then the light yellow-green clear solution is directly placed in a 165-180 DEG C environment for 6-12 h of reaction, and centrifugation and washing are conducted. A nanorod-cluster-shaped Pt material is synthesized with an oil phase solvothermal method, and no template agent CTAB needs to be added. Compared with the prior art, the center solid area of the synthesized nanorod-cluster-shaped Pt is small, and more active points can be exposed. The synthesized nanorod-cluster-shaped Pt is loose in aggregate and has a large specific surface area, and quality activity and specific activity for methanol oxidation are 616 mA / mg and 2.46 mA / cm2 correspondingly and are 4.17 times and 6 timesthose of commercial Pt / C correspondingly.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of nanorod cluster Pt. Background technique [0002] Platinum materials are widely used in modern industrial production due to their high catalytic activity. In traditional industrial production practices, platinum can be used as a catalyst in chemical reactions such as hydrogenation, dehydrogenation, isomerization, cyclization, dehydration, dehalogenation, oxidation, and cracking. In the field of modern new energy, platinum-based Various electrocatalytic materials have become the key to substantially improving energy utilization efficiency. However, as one of the rarest elements in the earth's crust (5 parts per billion), platinum catalysts are extremely expensive. Therefore, how to substantially improve the catalytic activity and stability of platinum has always been a research hotspot. [0003] Size and structure are the key fact...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B01J23/42B01J35/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B01J23/42B22F9/24B22F1/0553B22F1/054B22F1/07B01J35/40
Inventor 阳晓宇王谱沈乐伟龙琼玲王永应杰田歌常刚刚
Owner WUHAN UNIV OF TECH
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