Preparation method for graphene loaded cobalt nickel phosphide composite material

A nickel-cobalt phosphide and composite material technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as unfavorable environmental protection, safe experimental operation, performance degradation, etc., and achieve good applications. Prospects, improved electrical properties, the effect of easy availability of raw materials

Inactive Publication Date: 2015-07-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In addition, the reduction process of graphene oxide (GO) mostly adopts chemical reduction method, which requires the use of toxic chemical reducing agents such as hydrazine hydrate, which is very unfavorable for environmental protection and safe operation of experiments.
However, the performance of graphene oxide will be greatly reduced due to the many oxygen-containing groups on the surface. Therefore, it is very important to invent a preparation method that can quickly and easily reduce graphene oxide to graphene and complete nanomaterial loading at the same time. Significance and broad application prospects

Method used

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  • Preparation method for graphene loaded cobalt nickel phosphide composite material
  • Preparation method for graphene loaded cobalt nickel phosphide composite material

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Experimental program
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Effect test

Embodiment 1

[0024] A kind of preparation method of graphene supported nickel-cobalt phosphide composite material, comprises the following steps:

[0025] 1) Add 20 mL of deionized water into the beaker, add 0.325 g of nickel acetate tetrahydrate and 0.286 g of cobalt sulfate heptahydrate, and stir until completely dissolved to form a clear and transparent solution;

[0026] 2) The graphene oxide prepared by the Hummers method and obtained by freeze-drying was dissolved in an Erlenmeyer flask containing 15 mL of deionized water, and ultrasonicated until a uniform graphene oxide solution was formed, and the graphene oxide concentration was 0.35 g / L;

[0027] 3) Add the solution obtained in step 2) into the beaker of step 1) and continue to stir, then transfer the uniform liquid to the polytetrafluoroethylene lining;

[0028] 4) Add 0.260g of red phosphorus to the liquid in step 3), stir until suspended solids appear on the surface of the solution, seal the polytetrafluoroethylene lining int...

Embodiment 2

[0033] Change the 0.325g nickel acetate tetrahydrate into 0.438g nickel chloride hexahydrate in step 1) in Example 1, and keep other conditions unchanged. The average particle size of nickel-cobalt phosphide in the obtained graphene-supported nickel-cobalt phosphide composite material is reduced, and the coating conditions are basically the same.

Embodiment 3

[0035] The 0.286g cobalt sulfate heptahydrate of step 1) in embodiment 1 is changed into 0.347g cobalt chloride hexahydrate, and other conditions are constant, and the particle particle in the gained graphene-loaded nickel-cobalt phosphide composite material becomes bigger, and coating amount simultaneously Less, more exposed smooth graphene can be observed.

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Abstract

The invention relates to a preparation method for a graphene loaded cobalt nickel phosphide composite material. The method includes: dissolving a nickel salt and a cobalt salt in deionized water, putting graphene oxide in deionized water to conduct ultrasonic treatment into a homogeneous solution, mixing the two fully, then transferring the mixture into a polytetrafluoroethylene lining, then adding red phosphorus, finally performing water hydro-thermal treatment, and subjecting the obtained product to vacuum drying, thus obtaining the graphene loaded cobalt nickel phosphide composite material. The method provided by the invention has the advantages of environment friendliness, simple and safe operation and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of graphene-supported nanometer materials, in particular to a preparation method of a graphene-supported nickel-cobalt phosphide composite material. Background technique [0002] Compared with individual nanomaterials, hybrid nanocomposites have shown excellent properties in many aspects, such as optics, electricity, heat, mechanics and catalysis, which has attracted a large number of researchers to study this material. Graphene is a carbon atom through sp 2 Two-dimensional honeycomb lattice nanomaterials formed by hybrid covalent bonds, in addition, very large specific surface area (about 2600m 2 / g), good chemical stability, and excellent electrical and mechanical properties, making it a very promising carrier. At present, there are a large number of reports on the use of graphene oxide or reduced graphene as a carrier to support nanomaterials. These research results show that the combinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185
Inventor 刘淑玲刘瑛瑛仝建波杜经武程芳玲
Owner SHAANXI UNIV OF SCI & TECH
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