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Fct-phase FePtCu ternary alloy nano particle catalyst and synthesis method thereof

A nanoparticle and ternary alloy technology, which is applied in the field of nanotechnology and catalysis, can solve the problems of nanoparticle agglomeration, achieve low cost, excellent stability and catalytic activity, and avoid the effect of nanoparticle agglomeration

Active Publication Date: 2016-07-06
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will agglomerate the nanoparticles during the high temperature annealing process.

Method used

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  • Fct-phase FePtCu ternary alloy nano particle catalyst and synthesis method thereof
  • Fct-phase FePtCu ternary alloy nano particle catalyst and synthesis method thereof
  • Fct-phase FePtCu ternary alloy nano particle catalyst and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 : prepare fct-Fe of the present invention 50 Pt 30 Cu 20 The ternary alloy nano particle catalyst has the percentages of Fe element being 50±2%, Pt element being 30±2%, and Cu element being 20±2%.

[0044] First, the corresponding molar ratio of anhydrous FeCl 2 , platinum acetylacetonate (Pt(acac) 2 ), copper acetylacetonate (Cu(acac) 2 ) as a metal precursor, 1.5mmol1,2-hexadecanediol is mixed as a reducing agent and poured into a 100ml four-necked round-bottomed flask, and 20-25g of high-boiling point organic solvent hexadecylamine is used as a reaction solvent. 2 While heating in the atmosphere, carry out mechanical stirring. When the temperature of the whole mixed solution rises to 110°C, add 1mL of surface modifiers oleic acid and oleylamine after keeping it warm for 10 minutes. After the solution is heated to about 320°C, heat and condense at this temperature. Reflux and maintain mechanical stirring for 2.5 to 3.5 hours.

[0045] Stop heating, l...

Embodiment 2

[0051] Example 2 : prepare fct-Fe of the present invention 30 Pt 50 Cu 20 The ternary alloy nano particle catalyst has the percentages of Fe element being 30±2%, Pt element being 50±2%, and Cu element being 20±2%.

[0052] First, the corresponding molar ratio of anhydrous FeCl 2 , platinum acetylacetonate (Pt(acac) 2 ), copper acetylacetonate (Cu(acac) 2 ) as a metal precursor, 1.5mmol of 1,2-hexadecanediol is mixed as a reducing agent and poured into a 100ml four-neck round-bottomed flask, and 20-25g of a high-boiling point organic solvent hexadecylamine is used as a reaction solvent. N 2 While heating in the atmosphere, carry out mechanical stirring. When the temperature of the whole mixed solution rises to 110°C, add 1mL of surface modifiers oleic acid and oleylamine after keeping it warm for 10 minutes. After the solution is heated to about 320°C, heat and condense at this temperature. Reflux and maintain mechanical stirring for 2.5 to 3.5 hours.

[0053] Stop hea...

Embodiment 3

[0059] Example 3 : prepare fct-Fe of the present invention 35 Pt 45 Cu 20 The ternary alloy nano particle catalyst has a percentage of 35±2% for Fe element, 45±2% for Pt element and 20±2% for Cu element.

[0060] First, the corresponding molar ratio of anhydrous FeCl 2 , platinum acetylacetonate (Pt(acac) 2 ), copper acetylacetonate (Cu(acac) 2 ) as a metal precursor, 1.5mmol1,2-hexadecanediol is mixed as a reducing agent and poured into a 100ml four-necked round-bottomed flask, and 20-25g of high-boiling point organic solvent hexadecylamine is used as a reaction solvent. 2 While heating in the atmosphere, carry out mechanical stirring. When the temperature of the entire mixed solution rises to 110°C, add 1 mL of surface modifier oleic acid and oleylamine after holding for 10 minutes, and heat the solution to about 320°C, then heat and condense at this temperature. Reflux and maintain mechanical stirring for 2.5 to 3.5 hours.

[0061] Stop heating, let the whole mixed ...

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Abstract

The invention provides an fct-phase FePtCu ternary alloy nano particle catalyst and a synthesis method thereof. A polyalcohol reduction method is adopted, and metal precursors (including anhydrous FeCl2, platinum acetylacetonate and copper acetylacetonate), 1,2-hexadecanediol, oleic acid and oleylamine are heated to react in an organic solvent hexadecylamine, and are stirred in an N2 protection atmosphere; after heating and cooling, n-hexane and ethanol are added, and then the mixture is centrifuged and separated; supernatant is removed and sediment is dried to obtain a nano particle product; the structure, magnetism and catalytic activity of the nano particle product are determined; and the diameter of fct-phase FePtCu ternary alloy nano particles is 9-15 nanometers, the coercive force reaches 900Oe-4800Oe, an HER (Hydrogen Evolution Reaction) electro-catalytic property is characterized under the condition of 10mA / cm<2> and the over-potential eta=34-44mV Tafel slope b is equal to 23.6mV / dec-28.2mV / dec, and the ORR (Oxygen Reduction Reaction) electro-catalytic performance is excellent. The invention further synthesizes the fct-phase FePtCu ternary alloy nano particle catalyst with excellent performance. The fct-phase FePtCu ternary alloy nano particle catalyst does not need to be subjected to high-temperature annealing treatment, has the advantages of simplicity in preparation, low cost, high catalytic activity and good catalyst stability, and has very great application potential by being used as the HER and OOR electro-catalyst.

Description

【Technical field】 [0001] The invention belongs to the field of nanotechnology and catalysis. More specifically, the present invention relates to a FePtCu ternary alloy nanoparticle catalyst with a face-centered tetragonal structure and its synthesis method. Its hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) performances are very superior, and it is suitable for electrolysis of water to produce hydrogen and used on fuel cells. 【Background technique】 [0002] Energy is an important strategic development area for all countries in the world today, and finding efficient energy is a challenge and an opportunity that the scientific and technological community is currently facing. The unsustainability of fossil fuels, as well as the environmental pollution caused by the harmful gases released by burning fossil fuels, a large amount of CO 2 Serious global problems such as the greenhouse effect produced by the world drive human beings to continuously explore n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B22F9/24C22C5/04B22F1/00
CPCB22F1/0003C22C5/04B01J23/8926B22F9/24B01J35/40B01J35/39
Inventor 王浩陈旭舒丹汪汉斌王喜娜
Owner HUBEI UNIV
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