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A kind of preparation method of cobalt phosphide three-dimensional sheet flower
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A technology of three-dimensional flakes and cobalt phosphide, which is applied in the direction of phosphide and nanotechnology, can solve problems such as contradictions and complex reactions, and achieve the effects of broad application prospects, simple preparation process, and easy-to-obtain raw materials
Active Publication Date: 2017-01-25
SHAANXI UNIV OF SCI & TECH
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But the use of surfactants complicates the reaction and goes against the idea of green chemistry
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Embodiment 1
[0029] A method for preparing cobalt phosphide three-dimensional flakes, comprising the following steps:
[0030] 1) Add ethylene glycol with a volume of 10mL to the beaker, add 0.048g of cobalt chloride hexahydrate to each milliliter of ethylene glycol, and stir until the solid is completely dissolved to form a clear and transparent solution;
[0031] 2) Add 3mL of cyclohexanol to each milliliter of the clear and transparent solution, and continue stirring until a homogeneous solution is formed;
[0032] 3) Transfer the homogeneous solution into the polytetrafluoroethylene lining, add 0.015g of white phosphorus to each milliliter of the homogeneous solution, then seal the polytetrafluoroethylene lining into a stainless steel mold, and place it in a constant temperature oven at 210°C for heating reaction 16h;
[0033] 4) After the reaction is completed, cool to room temperature with an oven, and then centrifuge to obtain a crude product;
[0034] 5) washing the crude product...
Embodiment 2
[0037] Change the amount of cyclohexanol to 2mL in step 2 of embodiment 1) per milliliter of clear and transparent solution, and keep other conditions unchanged. Co 2 P crystallinity decreased significantly.
Embodiment 3
[0039] The temperature of the constant temperature oven in Step 3) of Example 1 was changed to 190° C., and other conditions remained unchanged. There were a large number of small particles in the three-dimensional cobalt phosphide flakes obtained at this temperature.
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Abstract
The invention relates to a preparation method of a cobalt phosphide three-dimensional sheet flower. The preparation method comprises the following steps that glycol is added into a beaker, then, soluble cobalt salt is added, stirring is carried out until solid is completely dissolved, and a clear and transparent solution is formed; then, cyclohexanol is added into the clear and transparent solution, and the stirring is continuously carried out until a uniform solution is formed; next, the uniform solution is transferred into a polytetrafluoroethylene inner liner, white phosphorus is added, then, the polytetrafluoroethylene inner liner is sealed into a stainless steel mold, and is placed in a constant temperature drying oven for to be heated for reaction, after the reaction is completed, the polytetrafluoroethylene inner liner is cooled to the room temperature along with the drying oven, then, centrifugal separation is carried out, and crude products are obtained; next, distilled water, absolute ethyl alcohol and benzene are sequentially and respectively used for washing crude products, finally, the washed products are subjected to vacuum drying, the cobalt phosphide three-dimensional sheet flower is obtained, and the cobalt phosphide three-dimensional sheet flower has good photocatalytic dye wastewater degradation performance. The preparation method has the advantages that the cost is low, raw materials can be easily obtained, surfactants are not needed, the repeatability is good, the preparation process is simple, green and environment-friendly effects are realized, and the expanded production is convenient.
Description
technical field [0001] The invention relates to the technical field of preparation of inorganic nano-micron materials, in particular to a preparation method of cobalt phosphide three-dimensional flakes. Background technique [0002] Iron group transition metal phosphides, such as cobalt phosphide, nickel phosphide, iron phosphide and other nanomaterials, have attracted a lot of attention due to their unique physical and chemical properties. Cobalt phosphide (Co 2 P) as an important member, not only has unique magnetic properties, is a potential negative electrode material for lithium-ion batteries, but also has good performance in catalysis, such as photocatalysis and hydrogenation refining catalysis. In the past few years, many methods have been tried to prepare cobalt phosphide nanomaterials with special morphology to show better performance. Among them, three-dimensional assembled nanomaterials have attracted people's attention due to their orderly assembly, low-dimensi...
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