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Porous platinum/palladium alloy nanoparticle catalyst as well as preparation method and application thereof

A technology of nano-particles and palladium alloys, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems that the performance of Pt/C catalysts cannot meet the requirements, etc. , to achieve the effect of simple preparation method, simple preparation method and mild reaction conditions

Active Publication Date: 2017-05-31
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the performance of commercial Pt / C catalysts in the prior art is still not up to the requirement

Method used

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  • Porous platinum/palladium alloy nanoparticle catalyst as well as preparation method and application thereof
  • Porous platinum/palladium alloy nanoparticle catalyst as well as preparation method and application thereof
  • Porous platinum/palladium alloy nanoparticle catalyst as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of porous platinum / palladium alloy nano particle catalyst, described preparation method comprises the following steps:

[0030] A. Add 80uL of 0.01M chloroplatinic acid aqueous solution to 9.75mL of 0.1M CTAC aqueous solution, shake well, then add 600μL of 0.01M sodium borohydride ice water solution, shake well, and put it in a 36°C oven for 3 hours to prepare get the seed solution;

[0031] B. Add 660 μL of 0.01M chloroplatinic acid aqueous solution, 120 μL of 0.01M chloropalladium acid aqueous solution, 320 μL of 0.1M ascorbic acid aqueous solution, and 200 μL of the seed solution prepared in step 1 to 40 ml of 0.1M CTAC aqueous solution, and keep the temperature at 36°C Stand still in the oven for 70 hours, then centrifuge to remove the supernatant, wash the precipitate with water once and centrifuge again, and then the porous platinum / palladium alloy nanoparticle catalyst can be prepared.

[0032] The molar percentage of palladium in th...

Embodiment 2

[0034] A kind of preparation method of porous platinum / palladium alloy nano particle catalyst, described preparation method comprises the following steps:

[0035]A. Add 80uL of 0.01M chloroplatinic acid aqueous solution to 9.75mL of 0.1M CTAC aqueous solution, shake well, then add 600μL of 0.01M sodium borohydride ice water solution, shake well, and put it in a 36°C oven for 3 hours to prepare get the seed solution;

[0036] B. Add 660 μL of 0.01M chloroplatinic acid aqueous solution, 240 μL of 0.01M chloropalladium acid aqueous solution, 320 μL of 0.1M ascorbic acid aqueous solution, and 200 μL of the seed solution prepared in step 1 to 40 ml of 0.1M CTAC aqueous solution, and keep the temperature at 36°C Stand still in the oven for 20 hours, then centrifuge to remove the supernatant, wash the precipitate with water once, and then centrifuge to prepare a porous platinum / palladium alloy nanoparticle catalyst.

[0037] The molar percentage of palladium in the product measured...

Embodiment 3

[0039] A kind of preparation method of porous platinum / palladium alloy nano particle catalyst, described preparation method comprises the following steps:

[0040] A. Add 80uL of 0.01M chloroplatinic acid aqueous solution to 9.75mL of 0.1M CTAC aqueous solution, shake well, then add 600μL of 0.01M sodium borohydride ice water solution, shake well, and put it in a 36°C oven for 3 hours to prepare get the seed solution;

[0041] B. Add 660 μL of 0.01M chloroplatinic acid aqueous solution, 240 μL of 0.01M chloropalladium acid aqueous solution, 320 μL of 0.1M ascorbic acid aqueous solution, and 200 μL of the seed solution prepared in step 1 to 40 ml of 0.1M CTAC aqueous solution, and keep the temperature at 36°C Stand still in the oven for 70 hours, then centrifuge to remove the supernatant, wash the precipitate with water once and centrifuge again, and then the porous platinum / palladium alloy nanoparticle catalyst can be prepared.

[0042] The molar percentage of palladium in th...

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Abstract

The invention discloses a porous platinum / palladium alloy nanoparticle catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing hexadecyl trimethyl ammonium chloride aqueous solution, chloroplatinic acid aqueous solution and sodium borohydride aqueous solution to obtain seed solution, then injecting the seed solution into growth solution prepared from hexadecyl trimethyl ammonium chloride aqueous solution, chloroplatinic acid aqueous solution, chloropalladic acid aqueous solution and ascorbic acid aqueous solution, growing for a period of time, so that nano-porous dendrite platinum palladium alloy nanoparticles with palladium enriched at the center are successfully obtained, then oxidizing for stripping the palladium at the center, so that the porous hollow cherry-shaped platinum / palladium alloy nanoparticle catalyst is obtained. Compared with the prior art, the preparation method is simple, reaction conditions are mild, the preparation method is simple and practicable and is green and pollution-free; the nano catalyst adjustable in dimension and components is obtained through controllable synthesis, and the obtained platinum / palladium alloy nanoparticle catalyst has larger specific surface area and shows excellent electrochemical catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of inorganic noble metal nanomaterials and electrocatalytic materials, and in particular relates to a porous platinum / palladium alloy nanoparticle catalyst, a preparation method and an application thereof. Background technique [0002] Platinum-based catalysts have excellent catalytic performance and play an important role in the fields of environmental engineering, energy, and industrial production. For example: purification of automobile exhaust, catalysis of fuel cells, electrolysis of water to produce hydrogen, etc. At present, commercial Pt / C catalysts have been widely used in many fields, greatly promoting the development of productivity. [0003] However, the reserves of platinum in the earth's crust are very limited, and the price is high. The performance of non-precious metal substitutes is inferior to that of platinum. The platinum nanoparticles in the existing commercial Pt / C catalysts have the d...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J35/10B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B01J23/44B01J35/60B01J35/40
Inventor 房彩虹赵俊赵贵丽
Owner ANHUI NORMAL UNIV
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