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Octahedral nanometer alloy, porous octahedral nanometer alloy as well as preparation method and purpose thereof

A nano-alloy and octahedral technology, which is applied in the field of catalytic materials, can solve the problems of unfavorable industrial production, strict requirements on dropping speed, complicated operation and the like, and achieves the effects of easy industrial production, simple operation and simple process.

Inactive Publication Date: 2017-03-15
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the preparation process of this method, the solution mixing needs to be carried out in multiple steps, the operation is cumbersome, and the addition rate is strictly required, which is not conducive to industrial production.

Method used

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  • Octahedral nanometer alloy, porous octahedral nanometer alloy as well as preparation method and purpose thereof
  • Octahedral nanometer alloy, porous octahedral nanometer alloy as well as preparation method and purpose thereof
  • Octahedral nanometer alloy, porous octahedral nanometer alloy as well as preparation method and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Dissolve platinum salt, silver salt, polyacrylamine hydrochloride and ascorbic acid in water, stir evenly to obtain a mixed solution, the concentration of platinum ions in the mixed solution is 0.0015mol / L, the concentration of silver ions is 0.0015mol / L, polyacrylamine The hydrochloride concentration is 10g / L, and the ascorbic acid concentration is 0.75mol / L. React at 180°C for 4h. After the reaction, cool to room temperature, wash the reaction product with water and ethanol three times, centrifuge to remove the supernatant, add nitric acid solution with a mass fraction of 35%, and sonicate at room temperature for 15 min. Centrifuge to remove the supernatant, wash, and repeat the operation of centrifugation and washing to neutrality to obtain a porous octahedral platinum-silver nano-alloy.

[0077] figure 1 For the transmission image of the porous platinum-silver nanoalloy prepared in this example, it can be clearly seen from the figure that the platinum-silver nanop...

Embodiment 2

[0086] Palladium salt, zinc salt, polyethylene glycol and ascorbic acid are dissolved in water, stir evenly, obtain mixed solution, in the mixed solution, palladium ion concentration is 0.00015mol / L, zinc ion concentration is 0.0005mol / L, polyethylene glycol concentration is 1g / L, the concentration of ascorbic acid is 0.1mol / L. React at 120°C for 4h. After the reaction, cool down to room temperature, wash the reaction product with water and ethanol three times, centrifuge to remove the supernatant, add 20% hydrochloric acid solution, and sonicate at room temperature for 10 min. Centrifuge to remove the supernatant, wash, and repeat the operations of centrifugation and washing to neutrality to obtain a porous octahedral palladium-zinc nano-alloy.

[0087] The porous octahedral palladium-zinc nano-alloy that present embodiment obtains, adopts BET specific surface area test method to record its specific surface area to be 10m 2 / g, with a porosity of 65%, the maximum reaction r...

Embodiment 3

[0089] Dissolve gold salt, copper salt, polyvinylpyrrolidone and sodium citrate in benzyl alcohol, stir well to obtain a mixed solution, the gold ion concentration in the mixed solution is 0.015mol / L, the copper ion concentration is 0.010mol / L, polyethylene The concentration of pyrrolidone is 25g / L, and the concentration of sodium citrate is 2mol / L. React at 200°C for 1 h. After the reaction, cool to room temperature, wash the reaction product with water and ethanol four times, centrifuge to remove the supernatant, add sulfuric acid solution with a mass fraction of 50%, and ultrasonicate at room temperature for 5 minutes. Centrifuge to remove the supernatant, wash, and repeat the operation of centrifugation and washing to neutrality to obtain a porous octahedral gold-copper nano-alloy.

[0090] The porous octahedral gold-copper nano-alloy that present embodiment obtains, adopts BET specific surface area test method to measure its specific surface area to be 9m 2 / g, with a p...

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Abstract

The invention relates to octahedral nanometer alloy, porous octahedral nanometer alloy as well as a preparation method and a purpose thereof. The octahedral nanometer alloy is prepared by mixing a metal salt precursor, a surfactant, a reducer and a solvent together and carrying out reaction for a certain time at a proper temperature. A crystal structure of the octahedral nanometer alloy has high symmetry, and a lattice structure of octahedral nanometer particles which form the nanometer alloy is face-centered cubic. The preparation method is simple, is simple and convenient to operate and does not need complex equipment and process; the obtained octahedral nanometer alloy is further dealloyed to obtain the porous octahedral nanometer alloy which also has very high structural symmetry and is large in specific surface area and good in structure stability; as a novel class of high-activity oxygenase mimetic enzyme and peroxidase mimetic enzyme, the octahedral nanometer alloy and the porous octahedral nanometer alloy can be applied to catalysis, immunoassay, biological detection and clinical diagnosis by replacing oxygenase and peroxidase.

Description

technical field [0001] The invention belongs to the field of catalytic materials, and relates to octahedral nano-alloys and porous octahedral nano-alloys, their preparation methods and applications, in particular to an octahedral nano-alloy, its preparation methods and applications, and a porous octahedral nano-alloy. The nano-alloy and its preparation method and application, the octahedral nano-alloy and the porous octahedral-shaped nano-alloy can be used as simulated enzymes in catalysis, immune analysis, biological detection and clinical diagnosis. Background technique [0002] In recent years, multi-component metal nanoalloys have attracted great interest in the field of catalysis. This material is composed of two or more metal elements. Due to the synergistic effect between metals, its performance is often better than that of single metal nanomaterials, such as enhancing catalytic activity, selectivity and stability. It is of great significance to rationally design and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/054
Inventor 蔡双飞杨蓉韩秋森贾星航王琛
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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