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Preparation method for nickel phosphide with hollow core-shell structure

A core-shell structure, nickel phosphide technology, applied in the direction of phosphide, etc., to achieve the effect of easy control of reaction conditions, high repeatability, and high photocatalytic performance

Inactive Publication Date: 2014-11-19
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on this structure, and almost all of them are oxides, and there is no such structure in phosphide

Method used

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  • Preparation method for nickel phosphide with hollow core-shell structure
  • Preparation method for nickel phosphide with hollow core-shell structure

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Experimental program
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Effect test

Embodiment 1

[0036] A method for preparing nickel phosphide with a hollow core-shell structure, comprising the following steps:

[0037] 1) Add 8-22 mL of deionized water to the polytetrafluoroethylene lining of the reaction kettle, weigh 0.1-2 g of soluble nickel salt into the deionized water, and stir on a magnetic stirrer until dissolved;

[0038] 2) Add 0.01-0.5g of anionic surfactant and 0.01-0.5g of cationic surfactant, stir until completely dissolved;

[0039] 3) Add 0.1-2g of elemental phosphorus to the solution, then seal the polytetrafluoroethylene lining into a stainless steel mold, and heat it from room temperature to 100-200°C under airtight conditions for 0.1-24h;

[0040] 4) After the reaction is completed, the resulting black precipitate is transferred to a centrifuge tube, washed several times with benzene, water, and absolute ethanol and centrifuged;

[0041] 5) Put the washed product into a vacuum drying oven at 50-60°C for 4-8 hours to obtain nickel phosphide Ni with a...

Embodiment 2

[0048] In embodiment 1 step 2) the quality of anionic surfactant and cationic surfactant becomes 0.01~0.3g and 0.03~0.4 respectively, other conditions are constant, product is compared with embodiment 1, to Congo red and saffron T The degradation rates of organic dyes were 78% and 56%, respectively.

Embodiment 3

[0050] In embodiment 1 step 2) the quality of anionic surfactant and cationic surfactant becomes 0.03~0.4 and 0.01~0.3g respectively, other conditions are constant, product is compared with embodiment 1, to Congo red and saffron T The degradation rates of organic dyes were 89% and 63%, respectively.

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Abstract

The invention relates to a preparation method for nickel phosphide with a hollow core-shell structure. The preparation method comprises the following steps: firstly, adding deionized water in the polytetrafluoroethylene liner of a reaction kettle, weighing soluble nickel salt, adding the soluble nickel salt into the deionized water and stirring by a magnetic stirrer until the soluble nickel salt is dissolved; then adding an anionic surfactant and a cationic surfactant and stirring until the anionic surfactant and the cationic surfactant are completely dissolved; adding elementary substance phosphorus into the solution, then sealing the polytetrafluoroethylene liner into a stainless steel die, heating from the room temperature under the closed condition, moving obtained black precipitates to a centrifuge tube after the reaction is completed, sequentially and repeatedly washing by benzene, water and absolute ethyl alcohol and centrifuging; finally, placing the washed product into a vacuum drying box to obtain the nickel phosphide with the hollow core-shell structure. The prepared nickel phosphide catalyst with the hollow core-shell structure has excellent photocatalytic performance on organic dye, the preparation method is simple to operate, the reaction is easy to control, good repeatability is achieved and heat treatment at the later period is not required.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nano-micron materials, and relates to a method for preparing nickel phosphide with a hollow core-shell structure. Background technique [0002] With the development of material research technology, exploring nano-micro materials with special structure and morphology has become the focus in the fields of physics and chemistry. This is because the morphology often affects the performance and properties of materials. As a new material structure, the nano-micro hollow core-shell is characterized by a movable core, a large internal hollow space and a shell with a thickness in the range of nanometer scale. This special structure makes it have many characteristics such as large specific surface area, small refractive index, and low density compared with other bulk materials, so the research and application scope of hollow core shell will continue to expand. The methods for preparing th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08
Inventor 刘淑玲蔺阳仝建波程芳玲
Owner SHAANXI UNIV OF SCI & TECH
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