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NiS/NiO heterojunction-loaded nitrogen-doped carbon nano composite material and preparation method and application thereof

A nanocomposite material and nitrogen-doped carbon technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low output, time-consuming and cumbersome preparation process, etc., and achieve low cost , The process is simple and easy, and the effect of simple operation

Active Publication Date: 2020-09-15
NANJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of such materials is usually time-consuming, cumbersome, and the output is low.

Method used

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  • NiS/NiO heterojunction-loaded nitrogen-doped carbon nano composite material and preparation method and application thereof
  • NiS/NiO heterojunction-loaded nitrogen-doped carbon nano composite material and preparation method and application thereof
  • NiS/NiO heterojunction-loaded nitrogen-doped carbon nano composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of nitrogen-doped carbon nanofiber, the preparation method of carbon nanotube loaded NiS / NiO heterojunction material, comprises the following steps:

[0048] 1)Ni 2+ The preparation of / PVP mixed sol: take by weighing 1.0g PVP and 6mL DMF and 6mL C 2 h 5 OH solution mixed, adding 1.5mmol of Ni(NO 3 ) 2 ·6H 2 O solid metal nitrate; after mechanical stirring at room temperature for 12h, make it evenly mixed, you can get light green Ni 2+ / PVP sol;

[0049] 2) Preparation of nitrogen-doped carbon nanocomposites loaded NiS / NiO heterojunction composites by electrospinning: the light green Ni obtained in step 1) 2+ / PVP sol, processed by electrospinning technology, the obtained solid carbon fiber film material is pre-oxidized in the air at 250°C for 3h, and then in N 2 Under the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min for heat treatment, and kept at this temperature for 3 hours, then cooled to room temperature, and then subjected to ...

Embodiment 2

[0052] A kind of nitrogen-doped carbon nanofiber, the preparation method of carbon nanotube loaded NiS / NiO heterojunction material, comprises the following steps:

[0053] 1)Ni 2+ The preparation of / PVP mixed sol: take by weighing 0.8g PVP and 6mL DMF and 6mL C 2 h 5 OH solution mixed, adding 1.5mmol of Ni(NO 3 ) 2 ·6H 2 O solid metal nitrate; after mechanical stirring at room temperature for 12h, make it evenly mixed, you can get light green Ni 2+ / PVP sol;

[0054] 2) Preparation of nitrogen-doped carbon nanocomposites loaded NiS / NiO heterojunction composites by electrospinning: the light green Ni obtained in step 1) 2+ / PVP sol, processed by electrospinning technology, the obtained solid carbon fiber film material is pre-oxidized in the air at 250°C for 3h, and then in N 2 Under the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min for heat treatment, and kept at this temperature for 3 hours, then cooled to room temperature, and then subjected to ...

Embodiment 3

[0056] A kind of nitrogen-doped carbon nanofiber, the preparation method of carbon nanotube loaded NiS / NiO heterojunction material, comprises the following steps:

[0057] 1)Ni 2+ The preparation of / PVP mixed sol: take by weighing 0.7g PVP and 6mL DMF and 6mL C 2 h 5 OH solution mixed, adding 1.5mmol of Ni(NO 3 ) 2 ·6H 2 O solid metal nitrate; after mechanical stirring at room temperature for 12h, make it evenly mixed, you can get light green Ni 2+ / PVP sol;

[0058] 2) Preparation of nitrogen-doped carbon nanocomposites loaded NiS / NiO heterojunction composites by electrospinning: the light green Ni obtained in step 1) 2+ / PVP sol, processed by electrospinning technology, the obtained solid carbon fiber film material is pre-oxidized in the air at 250°C for 3h, and then in N 2 Under the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min for heat treatment, and kept at this temperature for 3 hours, then cooled to room temperature, and then subjected to ...

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Abstract

The invention provides a NiS / NiO heterojunction-loaded nitrogen-doped carbon nano composite material and a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing Ni < 2 + > / PVP mixed sol; S2, performing electrostatic spinning on the Ni < 2 + > / PVP mixed sol to obtain a solid carbon fiber film; and S3, pre-oxidizing the solid carbon fiber film in an air atmosphere, and sequentially carrying out heat treatment in an inert atmosphere, oxidation treatment in the air atmosphere and sulfuration vapor deposition to obtain the NiS / NiO heterojunction-loaded nitrogen-doped carbon nano composite material. PVP selected in the method is cheap and easy to obtain, and compared with a traditional method for preparing the water electrolysis oxygen evolution electrocatalyst material, the method is simple and feasible in process, low in cost and easy to operate, and large-scale production can be achieved.

Description

technical field [0001] The invention relates to a nitrogen-doped carbon nanocomposite material loaded with a NiS / NiO heterojunction, a preparation method and application thereof, and belongs to the technical field of alkaline oxygen evolution reaction catalysts. Background technique [0002] With the rapid consumption of traditional fossil, coal and other energy sources and the increasingly prominent environmental pollution problems, it is imminent to seek green and sustainable new energy sources. Hydrogen energy is an important form of energy to replace fossil fuels, because of its zero emissions and ultra-high energy density (143kJ kg -1 ), environmental friendliness, sustainable utilization and other advantages are regarded as a promising alternative energy carrier. Compared with the traditional hydrogen production method, hydrogen production by electrolysis of water is considered to be a hydrogen production method with broad application prospects due to its advantages o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J27/043B01J35/06B01J35/10B01J37/08B01J37/14B01J37/16B01J37/20B01J37/34C25B1/04C25B11/06
CPCB01J27/24B01J27/043B01J37/342B01J37/084B01J37/20B01J37/14B01J37/16C25B1/04C25B11/04B01J35/33B01J35/58B01J35/59B01J35/61Y02E60/36
Inventor 徐林李同飞刘千玉李苏霖殷静雯李玉孙冬梅唐亚文
Owner NANJING NORMAL UNIVERSITY
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