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Preparation method of Ni3Fe-loaded nitrogen-doped carbon nanometer composite material, and product and applications thereof

A technology of nanocomposite materials and nitrogen-doped carbon, applied in chemical instruments and methods, catalyst activation/preparation, electrodes, etc. Regular appearance and the effect of promoting contact

Active Publication Date: 2019-01-22
NANJING NORMAL UNIVERSITY
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  • Summary
  • 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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  • Preparation method of Ni3Fe-loaded nitrogen-doped carbon nanometer composite material, and product and applications thereof
  • Preparation method of Ni3Fe-loaded nitrogen-doped carbon nanometer composite material, and product and applications thereof
  • Preparation method of Ni3Fe-loaded nitrogen-doped carbon nanometer composite material, and product and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A nitrogen-doped carbon nanofiber, carbon nanotubes loaded with Ni 3 The preparation method of Fe material, comprises the following steps:

[0043] 1)Ni 2+ / Fe 3+ / PVP mixed sol preparation: weigh 1.0g PVP with 6ml DMF and 6ml C 2 h 5 OH solution mixed, adding 1.5mmol of Ni(NO 3 ) 2 ·6H 2 O with 0.5mmol Fe(NO 3 ) 3 9H 2 O solid metal nitrate; after mechanical stirring at room temperature for 12h, make it evenly mixed, you can get yellow-brown Ni 2+ / Fe 3+ / PVP sol;

[0044] 2) Preparation of nitrogen-doped carbon nanocomposites loaded with Ni by electrospinning 3 Fe composite material: the yellow-brown Ni obtained in step 1) 2+ / Fe 3+ / 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, and then cooled to room ...

Embodiment 2

[0047] A nitrogen-doped carbon nanofiber, carbon nanotubes loaded with Ni 3 The preparation method of Fe material, comprises the following steps:

[0048] 1)Ni 2+ / Fe 3+ / PVP mixed sol preparation: weigh 0.8g PVP with 6ml DMF and 6ml C 2 h 5 OH solution mixed, adding 1.5mmol of Ni(NO 3 ) 2 ·6H 2 O with 0.5mmol Fe(NO 3 ) 3 9H 2 O solid metal nitrate; after mechanical stirring at room temperature for 12h, make it evenly mixed, you can get yellow-brown Ni 2+ / Fe 3+ / PVP sol;

[0049] 2) Preparation of nitrogen-doped carbon nanocomposites loaded with Ni by electrospinning 3 Fe composite material: the yellow-brown Ni obtained in step 1) 2+ / Fe 3+ / 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, and then cooled to room ...

Embodiment 3

[0051] A nitrogen-doped carbon nanofiber, carbon nanotubes loaded with Ni 3 The preparation method of Fe material, comprises the following steps:

[0052] 1)Ni 2+ / Fe 3+ / PVP mixed sol preparation: weigh 0.7g PVP with 6ml DMF and 6ml C 2 h 5 OH solution mixed, adding 1.5mmol of Ni(NO 3 ) 2 ·6H 2 O with 0.5mmol Fe(NO 3 ) 3 9H 2 O solid metal nitrate; after mechanical stirring at room temperature for 12h, make it evenly mixed, you can get yellow-brown Ni 2+ / Fe 3+ / PVP sol;

[0053] 2) Preparation of nitrogen-doped carbon nanocomposites loaded with Ni by electrospinning 3 Fe composite material: the yellow-brown Ni obtained in step 1) 2+ / Fe 3+ / 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, and then cooled to room ...

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Abstract

The invention discloses a preparation method of a Ni3Fe-loaded nitrogen-doped carbon nanometer composite material, and a product and applications thereof. The preparation method comprises following steps: 1, a Ni<2+> / Fe<3+> / PVP mixed sol is prepared; 2, the Ni<2+> / Fe<3+> / PVP mixed sol is subjected to electrostatic spinning so as to obtain solid carbon fiber film; 3, the solid carbon fiber film issubjected to pre-oxidation at air atmosphere at 200 to 300 DEG C, programmed heating is adopted for heat processing at 400 to 1000 DEG C at an inert atmosphere so as to obtain the Ni3Fe-loaded nitrogen-doped carbon nanometer composite material. The preparation method is low in cost, is easy, and is universal; the obtained Ni3Fe-loaded nitrogen-doped carbon nanometer composite material is of a one-dimensional composite structure (carbon nanometer fiber and carbon nanotube); Ni3Fe alloy particles can be embedded into the carbon nanometer fiber and carbon nanotube uniformly; the Ni3Fe-loaded nitrogen-doped carbon nanometer composite material can be taken as a water electrolysis hydrogen evolution electrocatalytic material, and possesses relatively high activity and excellent stability.

Description

technical field [0001] The invention relates to a loaded Ni 3 The preparation method of nitrogen-doped carbon nanocomposite material of Fe and the obtained material and application thereof belong to the technical field of alkaline hydrogen evolution reaction catalyst. Background technique [0002] With the rapid consumption of fossil energy and the increasingly prominent environmental pollution problems, people's urgent demand for clean, green and sustainable energy has been triggered. 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 have been widely concerned. Compared with the traditional hydrogen production method, electrolysis of water to produce hydrogen (2H 2 O→2H 2 +O 2 ), due to the advantages of greenness, high efficiency, and large-scale production, it is considered to be a hydrogen producti...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/00B01J35/10B01J37/08B01J37/12B01J37/16B01J37/34C25B1/04C25B11/06
CPCC25B1/04C25B11/04B01J27/24B01J37/082B01J37/084B01J37/12B01J37/16B01J37/342B01J35/399B01J35/393B01J35/33B01J35/60Y02E60/36
Inventor 徐林李同飞李鑫刘坤豪吕银洁孙冬梅唐亚文
Owner NANJING NORMAL UNIVERSITY
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