Preparation and application of double-metal phosphide and carbon nanotube composite material

A carbon nanotube and composite material technology, which is applied in the field of preparation of bimetallic phosphide carbon nanotube composite materials, can solve the problems of difficult preparation, carbon nanotubes cannot be phosphide phase composite, etc., and achieves good application prospects and good electrochemical performance. Effects of stability and catalytic activity, good hydrogen evolution performance

Inactive Publication Date: 2018-08-10
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon nanotubes are widely used because of their high specific surface area and good electrical conductivity. However, because carbon nanotubes cannot be well compounded with phosphides, the preparation of phosphide carbon nanotube composites is difficult.

Method used

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  • Preparation and application of double-metal phosphide and carbon nanotube composite material
  • Preparation and application of double-metal phosphide and carbon nanotube composite material
  • Preparation and application of double-metal phosphide and carbon nanotube composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Treatment of carbon nanotubes: Take 1-3 g of multi-walled carbon nanotubes and put them in a round bottom flask, add 50-120 mL of concentrated nitric acid. Then condense and reflux for 5 hours in a collector-type constant temperature heating magnetic stirrer, and the temperature is controlled at 120°C. The obtained product was washed with deionized water, dried at 60°C, and set aside;

[0030] (2) Preparation of CoNiP@CNTs material: Weigh Co(NO 3 ) 2 ·6H 2 O and Ni(NO 3 ) 2 ·6H 2O each 0.3g, put into a beaker, then add 15ml of water, and magnetically stir for 15min to make it fully dissolved; then add 0.01g of the carbon nanotubes treated above, ultrasonically until the carbon nanotubes are dispersed; then add 0.31g of white phosphorus, 5ml The ethanol was stirred evenly and put into the reaction kettle, and the reaction kettle was put into a constant temperature drying oven, and hydrothermally reacted at 200°C for 20h. After the completion of the hydrotherma...

Embodiment 2

[0033] (1) Treatment of carbon nanotubes: same as in Example 1;

[0034] (2) Preparation of CoNiP@CNTs material: Take 0.4g of white phosphorus in a beaker, add 15 ml of water and heat until the white phosphorus melts; then add 0.02g of the treated carbon nanotubes, stir for 15 minutes to mix the white phosphorus and carbon nanotubes uniform. Weigh Co(NO 3 ) 2 ·6H 2 O and Ni(NO 3 ) 2 ·6H 2 O each 0.2g, put into another beaker, add 10ml ethylene glycol, stir until completely dissolved; then mix the solutions in the two beakers and stir for 10 min, then put into the reaction kettle and put the reaction kettle into a constant temperature In a dry box, hydrothermally react at 200°C for 24h. After the hydrothermal treatment, the solution was vacuum filtered with circulating water, and the product was washed twice with ether and water respectively. The washed material is dried in a vacuum freeze-drying oven, and then ground to obtain CoNiP@CNTs material;

[0035] (3) Hydroge...

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Abstract

The invention provides a preparation method of a double-metal phosphide and carbon nanotube composite material. The preparation method includes sufficiently mixing and evenly dispersing Co(NO3)2 6H2O,Ni(NO3)2 6H2O, white phosphorus and a treated carbon nanotube in an alcohol-water mixed solvent, and allowing thermal reaction at the temperate of 100-240 DEG C for 10-24 hours; after reaction, performing vacuum suction filtration, washing, drying and grinding to obtain the double-metal phosphide and carbon nanotube composite material. The composite material has high electrochemistry stability, catalytic activity, mechanical strength, thermal stability and electrical conductivity. Electrochemistry performance tests show that the composite material with high potential and low current density has good hydrogen evolution performance in acid solvents. The preparation process of the composite material is simple, cost is low, and the composite material serves as an electrical catalyst to be applied to hydrogen evolution reactions, so that the composite material has a promising application prospect.

Description

technical field [0001] The invention specifically relates to the preparation of a transition metal phosphide composite material, in particular to the preparation of a double metal phosphide carbon nanotube composite material, which is mainly used as a catalyst for electrocatalytic hydrogen production. technical background [0002] With the increasing population, the demand for energy is increasing, which has exacerbated the depletion of fossil energy, and the burning of fossil energy has also brought about harsh environmental problems. In order to deal with the above problems, new clean energy can be developed and used. Hydrogen, as the most possible new clean energy, has attracted people's attention. At present, the main source of hydrogen is still the by-products of petrochemical industry. With the depletion of fossil energy in the future, this source will become impossible. Therefore, it is necessary to vigorously develop hydrogen production by electrolysis of water. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08C01B32/168C25B1/04C25B11/06B82Y30/00
CPCB82Y30/00C01B25/088C01P2004/03C01P2004/80C01P2006/40C25B1/04C01B32/168C25B11/091Y02E60/36
Inventor 王庆涛蔺娜李晶张鑫磊侯敏敏
Owner NORTHWEST NORMAL UNIVERSITY
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