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Synthesis method of self-assembled Ni3S2 nano-sheet

A synthesis method and self-assembly technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of catalytic activity, catalytic stability, and use range gap

Active Publication Date: 2018-08-21
吉林省春泽露科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a large number of cheap non-precious metal electrocatalysts for hydrogen and oxygen production have been developed, there is still a big gap in their catalytic activity, catalytic stability and application range compared with noble metal catalysts.

Method used

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  • Synthesis method of self-assembled Ni3S2 nano-sheet
  • Synthesis method of self-assembled Ni3S2 nano-sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) First, the 1cm×2cm nickel foam was ultrasonically cleaned at 70W in acetone and 3mol / L HCl solution for 8 minutes, then washed with deionized water and absolute ethanol, and dried at room temperature;

[0019] 2) Next, put the dried nickel foam into a 50mL high-temperature and high-pressure reactor with a polytetrafluoroethylene liner, then add 5mL of thiourea solution with a concentration of 1.445mmol / L, and add 0.275-0.363g of polyethylene Pyrrolidone (PVP) morphology control agent, the reactor is sealed, placed in an oven at 130 ° C for 10 h;

[0020] 3) After the reaction is finished, after naturally cooling to room temperature, take out the nickel foam, and rinse repeatedly with water and absolute ethanol respectively;

[0021] 4) Finally, put the rinsed nickel foam into a vacuum oven to dry at room temperature to obtain self-assembled Ni 3 S 2 Nanosheet array self-supporting electrodes.

[0022] Depend on figure 1 It can be seen that the sample prepared in ...

Embodiment 2

[0024] 1) First, the 1cm×2cm nickel foam was ultrasonically cleaned at 80W in acetone and 3mol / L HCl solution for 5 minutes, then washed with deionized water and absolute ethanol, and dried at room temperature;

[0025] 2) Next, put the dried nickel foam into a 50mL high-temperature and high-pressure reactor with a polytetrafluoroethylene lining, then add 8mL of 1.445mmol / L thiourea solution, and add 0.2-0.264g of polyethylene Pyrrolidone (PVP) morphology control agent, the reactor is sealed, placed in an oven at 140 ° C for 9 hours;

[0026] 3) After the reaction is finished, after naturally cooling to room temperature, take out the nickel foam, and rinse repeatedly with water and absolute ethanol respectively;

[0027] 4) Finally, put the rinsed nickel foam into a vacuum oven to dry at room temperature to obtain self-assembled Ni 3 S 2 Nanosheet array self-supporting electrodes.

[0028] figure 2 It can be seen that a self-assembled Ni prepared in this example 3 S 2 N...

Embodiment 3

[0030] 1) First, the 1cm×2cm nickel foam was ultrasonically cleaned at 80W in acetone and 3mol / L HCl solution for 10min, then washed with deionized water and absolute ethanol, and dried at room temperature;

[0031] 2) Next, put the dried nickel foam into a 50mL high-temperature and high-pressure reactor with a polytetrafluoroethylene liner, then add 10mL of 1.445mmol / L thiourea solution, and add 0.15-0.198g of polyethylene Pyrrolidone (PVP) morphology control agent, the reaction kettle is sealed, placed in an oven at 150 ° C for 8 hours;

[0032] 3) After the reaction is finished, after naturally cooling to room temperature, take out the nickel foam, and rinse repeatedly with water and absolute ethanol respectively;

[0033] 4) Finally, put the rinsed nickel foam into a vacuum oven to dry at room temperature to obtain self-assembled Ni 3 S 2 Nanosheet array self-supporting electrodes.

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Abstract

The invention provides a synthesis method of a self-assembled Ni3S2 nano-sheet. The method comprises steps as follows: firstly, foamed nickel is ultrasonically cleaned in acetone and an HCl solution in sequence, then washed with deionized water and absolute ethyl alcohol respectively and air-dried at the room temperature; secondly, air-dried foamed nickel is put in a high-temperature and high-pressure reactor provided with a polytetrafluoroethylene lining, a thiourea solution and a polyvinylpyrrolidone morphological regulating agent are added to the reactor, the reactor is sealed and put in adrying oven, after the reaction is finished, a mixture is naturally cooled to the room temperature, and foamed nickel is taken out and repeatedly washed with water and absolute ethyl alcohol; finally,washed foamed nickel is put in a vacuum drying oven and dried at the room temperature, and a self-assembled Ni3S2 nano-sheet array self-supporting electrode is obtained. The solvothermal method has the characteristics of simple process, short preparation cycle and easily controllable reaction conditions, and reaction progress and morphology size can be controlled by adopting different temperatures, so that different special structural morphologies are obtained.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a self-assembled Ni 3 S 2 Synthesis of nanosheets. Background technique [0002] At present, the synthesis of non-noble metal electrocatalysts with good metallicity or conductivity should be emphasized. Ni 3 S 2 Is a natural yellow nickel iron ore. Since the continuous Ni-Ni bond network runs through the Ni 3 S 2 The entire structure, so it has intrinsic metallic properties High conductivity, cheap Ni 3 S 2 It has been applied in many fields, such as oxygen reduction, lithium-ion batteries, dye-sensitized batteries, and hydrogen storage. [0003] The core issue in the development of electrocatalytic hydrogen and oxygen production technology is to improve the activity of HER electrocatalysts. Although a large number of inexpensive non-precious metal electrocatalysts for hydrogen and oxygen production have been developed, there is still a large gap in their catalytic a...

Claims

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Application Information

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IPC IPC(8): C01G53/11B82Y30/00B82Y40/00B01J27/043
CPCB82Y30/00B82Y40/00C01G53/11B01J27/043C01P2004/62C01P2002/72C01P2004/03B01J35/33
Inventor 冯亮亮何丹阳黄剑锋曹丽云
Owner 吉林省春泽露科技有限公司
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