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Synthesis technology of Pt-Co cube nanocrystalline

A synthesis process, cube technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as inconvenient operation, high cost, and complicated process

Active Publication Date: 2019-01-04
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Comparative Document 2: Chinese Patent Publication No. CN105413709A discloses a platinum-cobalt nano-bimetallic catalyst with a multi-cubic dendritic structure and its preparation method and application. Due to the use of inert gas protection and flammable, explosive and partially toxic reducing properties Gas, resulting in a much more complicated process, and the need to use inert gas protection, high cost and inconvenient operation

Method used

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  • Synthesis technology of Pt-Co cube nanocrystalline
  • Synthesis technology of Pt-Co cube nanocrystalline
  • Synthesis technology of Pt-Co cube nanocrystalline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In a 25ml flask, weigh 10mg platinum acetylacetonate, 6.65mg cobalt acetylacetonate, and 80mg tetraoctylammonium bromide respectively, add 5mL oleylamine, and then add 20 μL (15.46 mg) triisopropylsilane to the reaction system, Sonicate for 8 minutes to disperse the mixture in the bottle evenly in the solvent. The flask should be sealed with Teflon tape. Then place the flask in an oil bath, raise the temperature of the reaction system with the oil, and raise the temperature of the reaction system to 190° C. within 30 minutes, and keep the reaction system at 190° C. for 15 hours.

[0038] After the reaction was completed, the reaction system was naturally cooled to room temperature, and then 30 mL of ethanol was added to the colloidal product, ultrasonically dispersed, and centrifuged at 5000 r / min for 2 min. Then the supernatant was discarded, and the powder of the lower layer was left, washed 6 times with 30 mL of ethanol, and centrifuged at 5000 r / min for 2 min. The...

Embodiment 2

[0041] In a 25ml flask, weigh 10mg of platinum acetylacetonate, 6.65mg of cobalt acetylacetonate, and 170mg of tetraoctylammonium bromide, add 5mL of oleylamine, and then add 20mg of n-hexadecanyl formamide to the reaction system, and ultrasonically For 20 minutes, the mixture in the bottle was evenly dispersed in the solvent. The flask should be sealed with Teflon tape. Then place the flask in an oil bath, raise the temperature of the reaction system with the oil, and raise the temperature of the reaction system to 190° C. within 30 minutes, and keep the reaction system at 190° C. for 15 hours.

[0042]After the reaction was completed, the reaction system was naturally cooled to room temperature, and then 35 mL of ethanol was added to the colloidal product, ultrasonically dispersed, and centrifuged at 5000 r / min for 2 min. Then discard the supernatant, keep the lower layer of powder, and wash 7 times with 30 mL of ethanol, and centrifuge at 5000 r / min for 2 min. The finally...

Embodiment 3

[0045] In a 25ml flask, weigh 10mg platinum acetylacetonate, 6.65mg cobalt acetylacetonate, 170mg tetraoctylammonium bromide, add 5mL oleylamine, then add 80μL (61.8mg) triisopropylsilane to the reaction system, Sonicate for 20 minutes to disperse the mixture in the bottle evenly in the solvent. The flask should be sealed with Teflon tape. Then place the flask in an oil bath, raise the temperature of the reaction system with the oil, and raise the temperature of the reaction system to 190° C. within 30 minutes, and keep the reaction system at 190° C. for 15 hours.

[0046] After the reaction was completed, the reaction system was naturally cooled to room temperature, and then 40 mL of ethanol was added to the colloidal product, ultrasonically dispersed, and centrifuged at 5000 r / min for 2 min. Then discard the supernatant, leave the lower layer of powder, and wash with 30 mL of ethanol 8 times, also centrifuged at 5000 r / min for 2 min. The finally obtained samples are Pt-Co ...

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Abstract

The invention discloses a synthesis technology of Pt-Co cube nanocrystalline. The synthesis technology comprises the steps that platinum acetylacetonate and cobalt acetylacetonate serve as a metal precursor, triisopropylsilane or hexadecylformamide serves as a reducing agent, tetra-n-octylammonium bromide and oleylamine serve as a surfactant and a structure-directing agent, meanwhile, the oleylamine also serves as a solvent, and the Pt-Co cube nanocrystalline is obtained through a one-pot method. According to the synthesis technology, the shape of the Pt-Co cube nanocrystalline can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and specifically refers to a synthesis process of Pt-Co cube nanocrystals. Background technique [0002] Pt-based nanocrystals occupy a very important position in the field of catalysis. It has good catalytic performance in organic catalytic and electrocatalytic reactions. Because Pt is expensive, it is extremely important to reduce the amount of metal Pt used in the catalyst and improve the catalytic performance of Pt-based metal catalysts. [0003] So far, there are many methods that can be applied to the synthesis of Pt-based nanocrystals, which can well reduce the cost and improve the catalytic performance of the catalyst. However, the synthesis of Pt-based catalysts with better catalytic performance is still a work of great significance. [0004] Retrieved by: [0005] Comparative Document 1: Chinese Patent Publication No. CN102059126A discloses a method for preparing PtCo na...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/24C22C5/04B82Y30/00B82Y40/00B01J23/89
CPCC22C5/04B82Y30/00B82Y40/00B01J23/8913B22F9/24B22F1/07B22F1/054
Inventor 陈伟陈艳贺彩虹鲁少杰钱佳静唐文静黄少铭
Owner WENZHOU UNIVERSITY
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