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Conductive cellulose filter paper loaded Ru nano-particle composite catalyst and preparation method thereof

A composite catalyst and nanoparticle technology, applied in the direction of electrodes, electrolytic components, electrolytic processes, etc., can solve the problems of not being able to provide circuits and electrocatalyst electron conduction paths, and limiting the application of electrocatalysis

Active Publication Date: 2021-08-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such materials are usually insulating and cannot provide an electronic conduction path between the circuit and the electrocatalyst, severely limiting their application in the field of electrocatalysis.

Method used

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  • Conductive cellulose filter paper loaded Ru nano-particle composite catalyst and preparation method thereof
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  • Conductive cellulose filter paper loaded Ru nano-particle composite catalyst and preparation method thereof

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preparation example Construction

[0028] The preparation method of conductive cellulose filter paper loaded Ru nano particle composite OER catalyst of the present invention comprises the following steps:

[0029] Step 1, cut the qualitative filter paper into 1*2cm 2 , placed in deionized water, ultrasonically treated for 20min, then the ultrasonically filtered filter paper was transferred to acetone, soaked for 3h, and dried at room temperature to complete the cleaning of the qualitative filter paper.

[0030] Step 2, immerse the dried filter paper into 0.15-0.35M nickel sulfate solution and the existing 0.4-0.6M sodium borohydride solution in turn, after 3-5 cycles, use deionized water and anhydrous Rinse with ethanol, dry at room temperature, absorb nickel ions on the surface of the cellulose and reduce it with sodium borohydride to form an active cellulose filter paper loaded with nickel.

[0031] Step 3, weigh 1.0-2.0g anhydrous sodium sulfate, 2.0-3.0g sodium succinate, 0.70-0.74g dimethylammonia borane,...

Embodiment 1

[0034] The preparation method of conductive cellulose filter paper loaded Ru nano particle composite OER catalyst of the present invention comprises the following steps:

[0035] Step 1, cut the qualitative filter paper into 1*2cm 2 , placed in deionized water, ultrasonically treated for 20min, then the filter paper was transferred to acetone, soaked for 3h, and dried at room temperature.

[0036] Step 2: Repeatedly immerse the dried filter paper in 0.2M nickel sulfate and 0.6M sodium borohydride solution, after immersing for 3 times, rinse with deionized water and absolute ethanol, and dry at room temperature.

[0037] Step 3, weigh 1.5g of anhydrous sodium sulfate, 2.5g of sodium succinate, 0.72g of dimethylammonium borane, 0.094g of sodium hypophosphite and 2.5g of nickel sulfate hexahydrate and dissolve them in 100mL of deionized water, and magnetically stir to form homogeneous solution, and placed in a water bath at 10 ° C, the filter paper obtained in step 2 was immerse...

Embodiment 2

[0040] The preparation method of conductive cellulose filter paper loaded Ru nano particle composite OER catalyst of the present invention comprises the following steps:

[0041] Step 1, cut the qualitative filter paper into 1*2cm 2 , placed in deionized water, ultrasonically treated for 20min, then the filter paper was transferred to acetone, soaked for 3h, and dried at room temperature.

[0042]Step 2. Repeatedly immerse the dried filter paper in 0.2M nickel sulfate and 0.4M sodium borohydride solution. After immersing for 3 times, rinse with deionized water and absolute ethanol, and dry at room temperature.

[0043] Step 3, weigh 1.5g of anhydrous sodium sulfate, 2.5g of sodium succinate, 0.72g of dimethylammonium borane, 0.094g of sodium hypophosphite and 2.5g of nickel sulfate hexahydrate and dissolve them in 100mL of deionized water, and magnetically stir to form homogeneous solution, and placed in a water bath at 10 ° C, the filter paper obtained in step 2 was immersed...

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Abstract

The invention provides a conductive cellulose filter paper loaded Ru nano-particle composite catalyst and a preparation method, and belongs to the technical field of energy materials, the method comprises the following steps: immersing qualitative filter paper into a nickel sulfate solution and a sodium borohydride solution in sequence, and then cleaning and drying to obtain cellulose filter paper loaded with nickel elementary substance; immersing the cellulose filter paper loaded with the nickel elementary substance into a mixed solution A of anhydrous sodium sulfate, sodium succinate, dimethyl ammonia borane, sodium hypophosphite and nickel sulfate for 0.5-1.5 h, and then cleaning and drying to obtain conductive cellulose filter paper; and taking the conductive cellulose filter paper as a working electrode, carrying out electrodeposition by using an aqueous solution of ruthenium chloride in a three-electrode system, cleaning the obtained product, and drying to obtain the conductive cellulose filter paper loaded Ru nanoparticle composite catalyst. The obtained conductive cellulose filter paper loaded Ru nanoparticle composite catalyst shows relatively low overpotential and good conductivity, and can be used for preparing the catalyst. The catalyst is a self-supporting catalyst which can be used for water electrolysis anode oxygen evolution reaction.

Description

technical field [0001] The invention belongs to the technical field of energy materials, in particular to a conductive cellulose filter paper loaded Ru nano particle composite catalyst and a preparation method. [0002] technical background [0003] With the energy crisis and environmental problems caused by the excessive consumption of traditional fossil fuel systems intensifying, many scholars are committed to finding new energy systems. Hydrogen has a high calorific value, and only produces water during use, which is harmless to the environment and is considered to be the most promising clean energy. Electrolysis of water to produce hydrogen has attracted extensive attention as a new energy conversion technology. The electrolysis of water includes anodic oxygen evolution reaction (OER) and cathodic hydrogen evolution reaction, in which the anodic oxygen evolution reaction is a four-electron transfer process, and there is a serious kinetic and thermodynamic slow process, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/091C25B11/054C25B1/04
CPCC25B11/091C25B11/054C25B1/04Y02E60/36
Inventor 张素风魏宁姚雪王全胜呼旭旭周秋生
Owner SHAANXI UNIV OF SCI & TECH