A kind of preparation method and product of tungsten nitride nanofiber
A technology of tungsten nitride nanofibers, which is applied in the field of nanomaterials, can solve the problems of poor conductivity of tungsten nitride nanofibers, and achieve the effects of complete continuity, good conductivity, and simple and fast methods
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[0033] figure 1 It is a flow chart of the method for preparing tungsten nitride nanofibers constructed according to a preferred embodiment of the present invention, such as figure 1 Shown, a kind of method for preparing tungsten nitride nanofiber and product thereof, comprises the following steps:
[0034] (1) Preparation of electrospinning solution. Dissolve the compound containing tungsten element and polymer binder in the mixture of water and organic solvent, the weight percentage of each component is: 5%~20% of compound containing tungsten element, 5%~20% of polymer binder 30%, organic solvent 20%~40%, water 40%~60%;
[0035] (2) Electrospinning. Move the electrospinning solution obtained in step (1) to the electrospinning equipment, set the process parameters and perform electrospinning to obtain tungsten-containing precursor nanofibers. The electrospinning process parameters are as follows: Electrospinning Voltage 8kV~40kV, electrospinning distance 10cm~30cm, flow ra...
Embodiment 1
[0040] Such as figure 1 As shown, first, 8 g of ammonium metatungstate and 4 g of PVP were dissolved in a mixture of 20 g of water and 15 g of ethanol to obtain an electrospinning liquid; then, the electrospinning liquid was transferred to the electrospinning equipment , set the spinning voltage to 20 kV, the spinning distance to 18 cm, and the solution flow rate to 5 mL / h for electrospinning to obtain tungsten-containing precursor nanofibers; secondly, the obtained tungsten-containing precursor nanofibers The fibers were placed in a resistance furnace, and the temperature was raised to 600 °C at a rate of 5 °C / min for 3 hours to obtain WO 3 nanofibers; finally, the WO 3 The nanofibers were placed in a tube furnace for nitriding treatment, and the temperature was raised to 600 °C at a heating rate of 5 °C / min for 3 hours to obtain WN nanofiber samples.
Embodiment 2
[0042] Such as figure 1 As shown, first, 8g of ammonium metatungstate and 4g of PVP are dissolved in a mixture of 20g of water and 15g of ethanol to obtain an electrospinning solution; then, transfer the electrospinning solution to the electrospinning equipment, set the spinning The wire voltage is 20kV, the spinning distance is 18cm, and the solution flow rate is 5mL / h, and electrospinning is performed to obtain tungsten-containing precursor nanofibers; secondly, the obtained tungsten-containing precursor nanofibers are placed in a resistance furnace, Raise the temperature at a rate of 10°C / min to 600°C for 3 hours to obtain WO 3 nanofibers; finally, the WO 3The nanofibers were placed in a tube furnace for nitriding treatment, and the temperature was raised to 700°C at a heating rate of 15°C / min for 3 hours to obtain WN nanofiber samples.
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