Preparation method of porous cobalt phosphide nanowire catalyst

A technology of cobalt nanowires and catalysts is applied in the field of preparation of porous cobalt phosphide (CoP) nanowire catalysts, which can solve the problems of high cost, hinder mass production, scarcity of resources and the like, achieve low cost, improve electrochemical activity and Stable, Versatile Effects

Inactive Publication Date: 2017-10-13
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, precious metal platinum (Pt) and ruthenium, iridium oxides (such as RuO 2 and IrO 2 ) is considered to be the most active c

Method used

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  • Preparation method of porous cobalt phosphide nanowire catalyst
  • Preparation method of porous cobalt phosphide nanowire catalyst
  • Preparation method of porous cobalt phosphide nanowire catalyst

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0016] 1. Synthesis of linear basic cobalt carbonate;

[0017] Accurately weigh 0.2g of urea and 1.124g of cobalt sulfate heptahydrate with an electronic balance, add them into a beaker containing 33ml of deionized water, stir until the solids are completely dissolved, add 7ml of glycerol, and stir at room temperature for 30min to form a solution. The resulting solution was transferred to a polytetrafluoroethylene autoclave, heated and reacted at 170°C for 24 hours to obtain a precipitate, which was filtered and washed with deionized and absolute ethanol to remove the soluble matter. Dry at 60°C, take out the product and grind to obtain linear basic cobalt carbonate.

[0018] 2. Synthesis of tricobalt tetroxide precursor;

[0019] The sample obtained above was placed in a tube furnace, heated to 400°C and calcined for 2 hours at a heating rate of 2°C / min in an air atmosphere, cooled to room temperature, and the product was taken out to obtain a tricobalt tetroxide precursor...

Embodiment 2

[0023] 1. Synthesis of linear basic cobalt carbonate;

[0024] Accurately weigh 0.2g of urea and 1.124g of cobalt sulfate heptahydrate with an electronic balance, add them into a beaker containing 33ml of deionized water, stir until the solids are completely dissolved, add 7ml of glycerol, and stir at room temperature for 30min to form a solution. The resulting solution was transferred to a polytetrafluoroethylene autoclave, heated and reacted at 170°C for 24 hours to obtain a precipitate, which was filtered and washed with deionized and absolute ethanol to remove the soluble matter. Dry at 60°C, take out the product and grind to obtain linear basic cobalt carbonate.

[0025] 2. Synthesis of tricobalt tetroxide precursor;

[0026] The sample obtained above was placed in a tube furnace, heated to 400°C and calcined for 2 hours at a heating rate of 2°C / min in an air atmosphere, cooled to room temperature, and the product was taken out to obtain a tricobalt tetroxide precursor...

Embodiment 3

[0030] 1. Synthesis of linear basic cobalt carbonate;

[0031] Accurately weigh 0.2g of urea and 1.124g of cobalt sulfate heptahydrate with an electronic balance, add them into a beaker containing 33ml of deionized water, stir until the solids are completely dissolved, add 7ml of glycerol, and stir at room temperature for 30min to form a solution. The resulting solution was transferred to a polytetrafluoroethylene autoclave, heated and reacted at 170°C for 24 hours to obtain a precipitate, which was filtered and washed with deionized and absolute ethanol to remove the soluble matter. Dry at 60°C, take out the product and grind to obtain linear basic cobalt carbonate.

[0032] 2. Synthesis of tricobalt tetroxide precursor;

[0033] The sample obtained above was placed in a tube furnace, heated to 400°C and calcined for 2 hours at a heating rate of 2°C / min in an air atmosphere, cooled to room temperature, and the product was taken out to obtain a tricobalt tetroxide precursor...

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Abstract

The invention discloses a preparation method of a porous cobalt phosphide nanowire catalyst. The method comprises the following steps that a solution is prepared by taking urea as a precipitant, taking cobalt sulfate hepathydrate as a cobalt source and taking glycerin and deionized water as solvents; the solution is added into a high pressure reactor for a hydrothermal reaction, after sufficient reaction is achieved, suction filtration and washing are conducted, vacuum drying is conducted, and then linear basic cobalt carbonate is obtained; in a tubular furnace, air burning is conducted on the linear basic cobalt carbonate at certain temperature, and cobaltosic oxide is obtained; and sodium hypophosphite serves as a phosphorus source, a cobaltosic oxide precursor and sodium hypophosphite are placed at the two ends of the same porcelain boat according to a certain proportion, the phosphorus source is placed at the upper stream of airflow, the treated porcelain boat is put into the tubular furnace for lower temperature calcination in an inert atmosphere, and preparation of the porous cobalt phosphide nanowire catalyst is achieved. The preparation method of the porous cobalt phosphide nanowire catalyst has the advantages that the production technology is simple, the cost is low, electrochemical activity and stability of the catalyst can be effectively improved, and the method is wide in application.

Description

technical field [0001] The invention relates to a preparation method of a porous cobalt phosphide (CoP) nanowire catalyst. Background technique [0002] With the rapid increase of population and the rapid development of social economy, the demand for energy is very tense. However, the resource utilization efficiency of traditional fossil energy is low and a large amount of harmful gases are produced during the use process. Therefore, the development and utilization of new clean energy is indispensable, and the second Hydrogen energy, a secondary energy source, is considered to be one of the most promising energy sources in the 21st century and has attracted much attention. [0003] Electrolysis of water plays a key role in hydrogen energy. The earliest phenomenon of electrolysis of water began in 1789 with the transient discharge experiments of Van Trostwijk and Deiman, followed by further research and observation by Volta. Finally, in 1800, Nicholosn and Carlisle studied a...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B11/03B82Y40/00
CPCB82Y40/00C25B11/03C25B11/04
Inventor 温珍海章梦甜次素琴
Owner NANCHANG HANGKONG UNIVERSITY
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