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Preparation method of a dendritic silver-palladium-ruthenium composite material and its application in electrocatalytic oxidation of ethanol

A composite material and dendritic technology, which is applied in the preparation of dendritic silver-palladium-ruthenium composite materials and the application field of electrocatalytic oxidation of ethanol, can solve the problems of high catalyst consumption, platinum poisoning and deactivation, and scarcity of platinum resources. The preparation method is simple and the effect of electrocatalytic oxidation of ethanol is good

Active Publication Date: 2019-04-05
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, under the existing conditions, on the one hand, platinum resources are scarce, and on the other hand, platinum is easily poisoned and inactivated, resulting in low cost performance
Under alkaline conditions, the reaction kinetics of ethanol oxidation is faster, and the electrocatalytic oxidation activity of palladium to ethanol is better than that of platinum, but the current preparation methods are mostly based on palladium-based nanoparticles. On the one hand, the amount of catalyst is higher, and palladium metal is also easily poisoned, resulting in high cost

Method used

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  • Preparation method of a dendritic silver-palladium-ruthenium composite material and its application in electrocatalytic oxidation of ethanol
  • Preparation method of a dendritic silver-palladium-ruthenium composite material and its application in electrocatalytic oxidation of ethanol

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Embodiment 1

[0030] refer to figure 1 , the preparation method of a kind of dendritic silver-palladium ruthenium composite material of the present invention, comprises the following steps:

[0031] (8) ultrasonically clean the hydrophilic carbon paper in deionized water, ethanol, and deionized water respectively;

[0032] (9) the hydrophilic carbon paper cleaned in step (1) is installed on the platinum electrode holder as the working electrode;

[0033] (10) When the counter electrode and the saturated calomel electrode (SCE) are used as the reference electrode, the platinum mesh is placed in the electrolytic cell;

[0034] (11) Prepare electrodeposition solution, by adding 0.04mol L -1 Add ammoniacal liquor dropwise in the silver nitrate solution, and stop the dripping when the solution becomes turbid first and then becomes colorless;

[0035] (12) Add the electrodeposition solution prepared in step (4) into the electrolytic cell in step (3), and after depositing at -1.2V~-1.8V constan...

Embodiment 2

[0042] A preparation method of dendritic silver-palladium ruthenium composite material, the thickness of the hydrophilic carbon paper in step (1) is 0.2mm, and the hydrophilic carbon paper is washed in deionized water, ethanol, and deionized water successively for 5 minutes.

Embodiment 3

[0044] A preparation method of a dendritic silver-palladium ruthenium composite material, the geometric dimension of the working electrode in step (2) is 1cm×1cm, and the corresponding geometric dimension of the platinum mesh in step (3) is 1cm×1cm.

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Abstract

The present invention specifically relates to a preparation method of a dendritic silver-palladium-ruthenium composite material. The dendritic nano-silver microstructure prepared by electrodeposition is used as a template, and the mixed solution of palladium salt and ruthenium salt is used for electrodisplacement reaction. , thereby preparing a nano-dendritic silver-palladium-ruthenium composite material with a dendritic microstructure; further, the present invention applies the dendritic silver-palladium-ruthenium composite material obtained by the above preparation method to ethanol for electrocatalytic oxidation, so that in Under the premise of reducing the loading amount of palladium and ruthenium as much as possible, a better effect of electrocatalytic oxidation of ethanol can also be obtained.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of a dendritic silver-palladium-ruthenium composite material and its application in electrocatalytic oxidation of ethanol. Background technique [0002] At present, under alkaline conditions, electrocatalysts for the electrocatalytic oxidation of ethanol are generally based on platinum and palladium-based materials, and platinum has better electrocatalytic oxidation activity for ethanol under acidic conditions. However, under the current conditions, on the one hand, platinum resources are scarce, and on the other hand, platinum is easily poisoned and inactivated, resulting in low cost performance. Under alkaline conditions, the reaction kinetics of ethanol oxidation is faster, and the electrocatalytic oxidation activity of palladium to ethanol is better than that of platinum, but the current preparation methods are mostly based on palladium-based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/00C25C5/02C25B11/08C25B3/02C25B3/23
CPCB22F1/0007C25C5/02B22F9/24C25B3/23C25B11/097
Inventor 柳鹏程发良张敏谢世磊王寿山邱永福
Owner DONGGUAN UNIV OF TECH