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Metal phosphide nanofiber and preparation method thereof

A metal phosphide and nanofiber technology, applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of polluting the environment, entering phosphine gas, endangering health, etc., and achieving large specific surface area and controllable structural units. Effect

Active Publication Date: 2020-03-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phosphine gas produced by this method is highly toxic. Although the tail gas can be treated by the oxidant, a small amount of phosphine gas will still enter the atmosphere, pollute the environment, and endanger health.

Method used

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  • Metal phosphide nanofiber and preparation method thereof
  • Metal phosphide nanofiber and preparation method thereof
  • Metal phosphide nanofiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Dissolve 0.8g of PVA in 10ml of deionized water, heat and stir to 70°C to form a uniform PVA solution.

[0026] 2) Get ammonium molybdate powder (H 24 Mo 7 N 6 o 24 4H 2 O) 0.883g, phytic acid 0.550g (the ratio of the amount of Mo and P is 1:1) was added to the above PVA solution together to obtain a mixed solution.

[0027] 3) Add 0.1ml Triton-X-100 surfactant to the above mixed solution, stir evenly to form spinning precursor solution.

[0028] 4) Pour the spinning precursor solution in step 3) into the syringe, debug the instrument to carry out electrospinning, the parameters of the electrospinning are: the distance from the spinning needle to the collecting plate is 15cm, the spinning voltage is 20kV, and the spinning solution Flow rate 0.3mL / h. After electrospinning, the precursor nanofibers on the plate are stripped.

[0029] 5) Heat treatment of the precursor nanofibers, the heat treatment process is: in Ar / H 2 Mixed atmosphere (volume ratio of 95% Ar ...

Embodiment 2

[0032] 1) Dissolve 0.9g of PVA in 10ml of deionized water, heat and stir to 70°C to form a uniform PVA solution.

[0033] 2) Take cobalt chloride powder (CoCl 2 ·6H 2 O) 1.189g, and 0.550g of phytic acid powder (the ratio of the amount of Co to P is 2:1) were added to the above PVA solution together to obtain a mixed solution.

[0034] 3) Add 0.05ml of Triton-X-100 surfactant into the above mixed solution, and stir evenly to form a spinning precursor solution.

[0035] 4) Pour the spinning precursor solution in step 3) into the syringe, and debug the instrument to carry out electrospinning. The parameters of the electrospinning are: the distance from the spinning needle to the collecting plate is 15cm, the spinning voltage is 20KV, and the spinning solution Flow rate 0.4mL / h. After electrospinning, the precursor nanofibers on the plate are stripped.

[0036]5) Heat treatment of the precursor nanofibers, the heat treatment process is: in Ar / H 2 Mixed atmosphere (volume rat...

Embodiment 3

[0039] 1) Dissolve 1.0g of PVA in 10ml of deionized water, heat and stir to 70°C to form a uniform PVA solution.

[0040] 2) Take nickel chloride powder (NiCl 2 ·6H 2 O) 1.188g, and 0.550g of phytic acid powder (the ratio of the amount of Ni to P is 2:1) were added to the above PVA solution together to obtain a mixed solution.

[0041] 3) Triton-X-100 surfactant with a concentration of 1ml is added to the above mixed solution, and stirred evenly to form a spinning precursor solution.

[0042] 4) Pour the spinning precursor solution in step 3) into the syringe, and debug the instrument for electrospinning. The parameters of the electrospinning are: the distance from the spinning needle to the collecting plate is 15cm, the spinning voltage is 18KV, and the spinning solution Flow rate 0.5mL / h. After electrospinning, the precursor nanofibers on the plate are stripped.

[0043] 5) Heat treatment of the precursor nanofibers, the heat treatment process is: in Ar / H 2 Mixed atmosp...

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Abstract

The invention discloses a metal phosphide nanofiber and a preparation method thereof. The preparation method of the metal phosphide nanofiber includes the steps: 1) preparing spinning precursor solution; taking metal inorganic salt as a metal source, taking phytic acid as a phosphorus source, taking polyvinyl alcohol as a high-molecular polymer and taking water as a solvent and taking Triton-X-100as a surfactant; 2) acquiring a metal phosphide precursor nanofiber by electrostatic spinning; 3) performing heat treatment on the metal phosphide precursor nanofiber to obtain the metal phosphide nanofiber; 4) enabling the general formula of chemical components of the metal phosphide nanofiber prepared by the method to be MxPy, wherein M can be any one or any proportional combination of Co, Ni,Cu and Mo, P is phosphorus, and x and y are stoichiometric amounts of metal and phosphorus in metal phosphide. The preparation method has the advantages of simple flow, easiness in acquiring raw materials and no pollution. The prepared metal phosphide nanofiber can be used for catalysts, super-capacitors, lithium ion batteries and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of one-dimensional nanofiber materials, and in particular relates to a process for preparing metal phosphide nanofibers. Background technique [0002] One-dimensional nanofibrous materials are considered ideal materials for directional electron transport due to their orientation properties along a certain direction. In addition, the unique structure of one-dimensional nanomaterials also gives play to its unique advantages in the fields of ceramic toughening technology, micro-electromechanical systems, and catalysis. Due to the large specific surface area of ​​nanofibers, hierarchical porous structure, high thermal stability, the bonding state and electronic state of the surface are different from those inside the fiber, and the incomplete coordination of surface atoms leads to an increase in the active sites on the surface, which makes it possess as Basic conditions for catalysts. At present...

Claims

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Application Information

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IPC IPC(8): D01F9/10
CPCD01F9/10
Inventor 洪樟连全鑫瑶支明佳
Owner ZHEJIANG UNIV
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