A kind of synthetic method of NIO multilevel micro-nano fiber and the product obtained therefrom
A technology of micro-nano fiber and synthesis method, which is applied in the field of synthesis of NiO multi-level micro-nano structure, can solve problems such as difficult multi-level structure, multi-level process control factors on the surface of micro-nano materials, complex high-temperature chemical reactions, etc. Achieve the effects of controllable composition, adjustable static spinning parameters, and simple process parameters
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Embodiment 1
[0030] 1.1 Mix 0.0437 g of p-phenylenediamine, 0.0534 g of glutaric acid, 0.4802 g of nickel chloride (NiCl 2 . 6H 2O) and 0.6660 g of PVP were dissolved in a mixed solvent consisting of 4 mL of DMF and 1 mL of ethanol, and stirred until transparent to obtain a precursor spinning solution.
[0031] 1.2 The precursor fiber was obtained by electrospinning the precursor spinning solution. The spinning parameters were: positive voltage 18KV, negative voltage 0.5 KV, receiving distance 18 cm, and syringe advancing speed 0.002 mm / s.
[0032] 1.3 Place the precursor fiber in a muffle furnace, raise the temperature from room temperature to 600 °C at a rate of 1 °C / min in an air atmosphere, and keep it for 2 h. After the sample is cooled with the furnace, NiO multi-level micro-nano fibers are obtained.
[0033] The XRD result of the product is as follows figure 1 As shown, it can be seen from the figure that all the diffraction peaks are consistent with the standard XRD card (44-115...
Embodiment 2
[0035] 2.1 Add 0.0413 g of p-phenylenediamine, 0.0216 g of glutaric acid, and 0.3241 g of NiCl 2 . 6H 2 O and 0.3297g of PVP were dissolved in a mixed solvent of 4 mL of DMF and 1 mL of ethanol, and stirred until transparent to obtain a precursor spinning solution.
[0036] 2.2 The precursor fiber was obtained by electrospinning the precursor spinning solution. The spinning parameters were: positive voltage 16KV, negative voltage 0.5 KV, receiving distance 20 cm, and syringe advancing speed 0.001 mm / s.
[0037] 2.3 Place the precursor fiber in a muffle furnace, raise the temperature from room temperature to 700 °C at a rate of 2 °C / min in an air atmosphere, and keep it for 7 h. After the sample is cooled with the furnace, the NiO multi-level micro-nano fiber is obtained. The NiO multi-level micro-nano fiber is composed of NiO porous fibers and NiO nanoparticles, and NiO nanoparticles are grown in situ on the surface of the NiO porous fibers, wherein the diameter of the NiO p...
Embodiment 3
[0039] 3.1 Add 0.0447 g of p-phenylenediamine, 0.1135 g of glutaric acid, and 0.7562 g of NiCl 2 . 6H 2 O and 1.2937g of PVP were dissolved in a mixed solvent of 4 mL of DMF and 1 mL of ethanol, and stirred until transparent to obtain a precursor spinning solution.
[0040] 3.2 The precursor fiber was obtained by electrospinning the precursor spinning solution. The spinning parameters were: positive voltage 17KV, negative voltage 0.5 KV, receiving distance 19 cm, and syringe advancing speed 0.002 mm / s.
[0041] 3.3 Place the precursor fiber in a muffle furnace, raise the temperature from room temperature to 550 °C at a rate of 3 °C / min in an air atmosphere, and keep it for 3 h. After the sample is cooled with the furnace, the NiO multi-level micro-nano fiber is obtained. The NiO multilevel micro-nanofiber is composed of NiO porous fibers and NiO nanoparticles, and NiO nanoparticles are grown in situ on the surface of the NiO porous fibers, wherein the diameter of the NiO por...
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