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Multi-shell nickel-based nitride nanocomposite material and its preparation method and application

A technology of nanocomposite materials and nitrides, which is applied in the field of multi-shell nickel-based nitride nanocomposites and its preparation, can solve the problems of limited catalytic activity and complicated preparation methods, and achieve enriched channels, improved activity and stability, The effect of large specific surface area

Active Publication Date: 2021-11-16
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of existing catalytic materials, such as limited catalytic activity and complex preparation methods, and provide a multi-shell nickel-based nitride nanocomposite material with high room temperature catalytic hydrolysis hydrogen production activity and simple preparation method

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  • Multi-shell nickel-based nitride nanocomposite material and its preparation method and application
  • Multi-shell nickel-based nitride nanocomposite material and its preparation method and application
  • Multi-shell nickel-based nitride nanocomposite material and its preparation method and application

Examples

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Embodiment 1

[0058] Embodiment 1 A kind of multi-shell nickel nitride nanomaterial

[0059] The preparation method of the multi-shell nickel nitride nanomaterial comprises the following steps:

[0060] S1, 1.33g (5mmol) of nickel acetate [Ni(CH 3 COO) 2 4H 2 O], 0.5g trimesic acid (H 3 BTC) and 5 g of PVP were dispersed in 500 mL of N,N-dimethylamide (DMF), ultrasonicated for 0.5 h and then vigorously stirred for 0.5 h (the stirrer speed was 900 rpm) to obtain a uniform suspension A;

[0061] S2. Transfer the suspension A obtained in step S1 to a polytetrafluoroethylene high-pressure reactor, seal it, and place it in a blast drying oven for solvothermal reaction. React at 150°C for 6 hours. After the reaction is completed, let it cool naturally. The final material was suction-filtered through an organic hybrid nylon new sub-filter membrane with a pore size of 0.45 μm, washed with ethanol for 3 times, and dried in an oven at 80°C for 12 hours to obtain a transition metal nickel ion coor...

Embodiment 2

[0067] Embodiment 2 A kind of multi-shell nickel-cobalt double metal nitride hollow structure nanomaterial

[0068] The preparation method of the multi-shell nickel-cobalt double metal nitride hollow structure nanomaterial comprises the following steps:

[0069] S1, 2.37g (10mmol) of nickel chloride [NiCl 2 ·6H 2 O], 1.18g (5mmol) cobalt chloride [CoCl 2 ·6H 2 O], 1g of tannic acid (TA) and 2g of SDS were dispersed in 500mL of deionized water, and then it was ultrasonically stirred for 0.1h and then vigorously stirred for 1h (the stirring speed was 900rpm) to obtain a uniform suspension A;

[0070] S2. Transfer the suspension A obtained in step S1 to a polytetrafluoroethylene high-pressure reactor, seal it and place it in a blast drying oven for solvothermal reaction, and react at 100°C for 12 hours. After the reaction is completed, let it cool naturally. The final materials were washed three times with deionized water, centrifuged at 10,000 rpm each time, and dried in an ...

Embodiment 3

[0075] Example 3 A multi-shell nickel-copper bimetallic nitride hollow structure nanomaterial

[0076] The preparation method of the multi-shell nickel-copper double metal nitride hollow structure nanomaterial comprises the following steps:

[0077] S1, 1.16g (4mmol) nickel nitrate [Ni(NO 3 ) 2 ·6H 2 O], 1.13g (6mmol) copper nitrate [Cu(NO 3 ) 2 ·6H 2 O], 4g Schiff's base (SB) and 4g CTAB were dispersed in 80mL acetone, and then it was ultrasonically stirred for 1h and then vigorously stirred for 1.5h (stirrer speed was 900rpm) to obtain a uniform suspension A;

[0078]S2. Transfer the suspension A obtained in step S1 to a polytetrafluoroethylene high-pressure reactor, seal it, and place it in a blast drying oven for solvothermal reaction. React at 150°C for 6 hours. After the reaction is completed, let it cool naturally. The final material was suction-filtered through an organic hybrid nylon new sub-filter membrane with a pore size of 0.45 μm, washed with ethanol for 3 ...

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Abstract

The invention belongs to the technical field of hydrolysis hydrogen production catalysts, and in particular relates to a multi-shell nickel-based nitride nanocomposite material and a preparation method and application thereof. The multi-shell nickel-based nitride nanocomposite introduces non-metal heteroatom nitrogen for the first time, which can regulate the electronic structure of the transition metal Ni and prevent its oxidation, and improve the activity and stability of the catalyst; it is prepared by a specific method and can be obtained by The porous multi-shell hollow nanosphere structure formed by the accumulation of nanoparticles has abundant pores and large specific surface area, which is conducive to the full exposure of active sites and the diffusion and adsorption of reaction materials; it can be applied to NaBH 4 Excellent catalytic effect has been achieved in the hydrolysis hydrogen production reaction of various hydrogen storage compounds.

Description

technical field [0001] The invention belongs to the technical field of hydrolysis hydrogen production catalysts. More specifically, it relates to a multi-shell nickel-based nitride nanocomposite material and its preparation method and application. Background technique [0002] Hydrogen energy is a green energy that is expected to solve the fossil energy crisis and alleviate environmental pollution in the 21st century. At the same time, as a carrier of renewable energy storage, it can solve the problem of energy storage when promoting the use of renewable energy on a large scale, effectively reducing CO 2 emission. NaBH 4 , NH 3 BH 3 , N 2 h 4 BH 3 , N 2 h 4 Hydrogen storage compounds represented by , HCOOH, etc. have the characteristics of high hydrogen storage capacity, light weight, safe transportation and controllable hydrogen production process, and are considered to be very promising hydrogen storage materials. The methods of hydrogen release of the above-ment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J37/08B01J35/08B01J35/10B82Y30/00B82Y40/00C01B3/04C01B3/22
CPCB01J27/24B01J37/08B82Y30/00B82Y40/00C01B3/04C01B3/22B01J35/40B01J35/51B01J35/613B01J35/615Y02E60/36
Inventor 李萍陈冉林于楠李文琴
Owner SUN YAT SEN UNIV
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