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Palladium/cuprous oxide reticular nano catalytic material and preparation and application thereof

A nano-catalytic material, cuprous oxide technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems that the performance of palladium-based catalysts cannot be greatly improved, and achieve good anti-poisoning ability As well as the effects of stability, convenience for delivery, and simple operation

Inactive Publication Date: 2017-01-04
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the performance of palladium-based catalysts cannot be greatly improved simply by introducing other auxiliary substances or forming a unique shape.

Method used

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  • Palladium/cuprous oxide reticular nano catalytic material and preparation and application thereof
  • Palladium/cuprous oxide reticular nano catalytic material and preparation and application thereof
  • Palladium/cuprous oxide reticular nano catalytic material and preparation and application thereof

Examples

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Embodiment 1

[0032] The preparation method of the palladium cuprous oxide nano-mesh anode material of highly active catalytic methanol comprises the following steps:

[0033] (1) Add 300μL of sodium phytate solution (1mM) into 10mL of deionized water, stir and heat to boiling, add 10mM copper chloride solution into the sodium phytate aqueous solution, keep the temperature at 90-100℃, and add 2M sodium hydroxide The solution was stirred continuously, reacted for 30 minutes, and added the same amount of sodium phytate as last time to prepare copper oxide nanorods protected by sodium phytate, centrifuged at 10000-20000rpm for 10min, and settled to 1mL to obtain oxidized Copper nanorod suspension (in this step, the mol ratio of sodium phytate, cupric chloride, alkali is 0.03:5:200);

[0034] (2) Disperse 15 μL of the copper oxide nanorod suspension in step (1) in 10 mL of deionized water, stir continuously and heat to a temperature of 70-100 ° C, add sodium tetrachloropalladate solution, and t...

Embodiment 2

[0041] A kind of preparation method of the electrode material that adopts palladium-cuprous oxide reticular nano catalytic material modification, comprises the following steps:

[0042] (1) Take the pre-prepared 0.5mM sodium phytate solution, add deionized water, stir and heat until boiling, keep the temperature at 90°C, then add 5mM copper chloride solution and 1M NaOH solution to it, and stir for 60min , adding sodium phytate again to obtain a suspension of copper oxide nanorods protected by sodium phytate, and the ratio of adding sodium phytate twice is 1:2.

[0043] (2) Take the copper oxide nanorod suspension in step (1), dilute with water, stir and heat to 100°C, then add 20mM sodium tetrachloropalladate solution and 0.2M ascorbic acid solution in turn to obtain palladium / oxide Cuprous nanoparticles, after centrifugal washing, are dispersed in water to obtain a palladium / cuprous oxide nanosuspension with a concentration of 0.2 mg / mL; the addition amount of each raw mater...

Embodiment 3

[0046] A kind of preparation method of the electrode material that adopts palladium-cuprous oxide reticular nano catalytic material modification, comprises the following steps:

[0047] (1) Take the pre-prepared 0.8mM sodium phytate solution, add deionized water, stir and heat until boiling, keep the temperature at 95°C, then add 8mM copper chloride solution and 1.6M NaOH solution to it, and stir to react After 20 minutes, sodium phytate was added again to obtain a suspension of copper oxide nanorods protected by sodium phytate, and the ratio of the amount of sodium phytate added twice was 1:1.5.

[0048] (2) Take the copper oxide nanorod suspension in step (1), dilute with water, stir and heat to 90°C, then add 15mM sodium tetrachloropalladate solution and 0.15M ascorbic acid solution in turn to obtain palladium / oxidized Cuprous nanoparticles, after centrifugal washing, are dispersed in water to obtain a palladium / cuprous oxide nanosuspension with a concentration of 0.1 mg / mL...

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Abstract

The present invention relates to a palladium / cuprous oxide reticular nano catalytic material and preparation and application thereof. The nano catalytic material is prepared by the following steps: (1) taking a prepared phytate solution, adding deionized water, stirring and heating to boiling, then adding a copper salt solution and an alkali liquor thereto, heating, stirring and reaction, and adding phytate again, to obtain copper oxide nanorod suspension liquid protected by phytate; and (2) taking the copper oxide nanorod suspension liquid in step (1), diluting the suspension liquid by water, then adding a tetrachloropalladate salt solution and an ascorbic acid solution in sequence, performing stirring and heating, centrifugation, and washing, to obtain the palladium / cuprous oxide nano catalytic material. Compared with the prior art, the nano catalytic material of the present invention has higher catalytic activity, anti-poisoning power and stability, the preparation method is environmentally friendly.

Description

technical field [0001] The invention relates to the field of nano catalytic materials, in particular to a palladium-cuprous oxide reticular nano catalytic material and its preparation and application. Background technique [0002] Compared with traditional fossil fuels, direct alcohol fuel cells have significant advantages, such as high energy density, low operating temperature, environmental protection, easy storage and transportation, etc. Direct alcohol fuel cells have been widely used in the field of transportation and portable devices. Catalyst is the core component in the fuel cell reaction, and the key to the development of fuel cells is to design novel and superior anode catalytic materials and optimize the synthesis process. Platinum-based catalysts are currently the most effective catalysts in the field of fuel cells, but their commercial application in fuel cells is limited due to their high cost and limited reserves. At the same time, carbon intermediates such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/88H01M8/1011B82Y30/00B82Y40/00
CPCH01M4/8647H01M4/88H01M4/90H01M4/9016H01M4/9041H01M8/1011Y02E60/50
Inventor 杨海峰吉媛媛
Owner SHANGHAI NORMAL UNIVERSITY
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