Tellurium terpene/graphene hybridization porous fibers with radial opening holes and preparation method and application thereof
A technology of porous fibers and hybrid fibers, applied in the preparation of tellurene/graphene hybrid porous fibers, in the field of tellurene/graphene hybrid porous fibers, can solve the problem of uneven dispersion of tellurene and graphene, tellurene and graphene The graphene ratio is difficult to control, and the spinnability is poor, so as to achieve excellent performance, significant photoelectric effect, and good flexibility.
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[0037] In a first aspect, the present invention provides a method for preparing a tellurene / graphene hybrid porous fiber with radial openings, comprising the following steps:
[0038] Preparation of a mixture of tellurene and graphene oxide: provide a tellurene pre-exfoliation dispersion, add graphene oxide to the tellurene pre-exfoliation dispersion, perform ultrasonication in a constant temperature water bath, centrifuge, collect the bottom layer mixture, and then disperse the bottom layer mixture in water, washing, concentrating and drying to obtain a mixture of tellurene and graphene oxide;
[0039] Preparation of tellurene / graphene oxide mixed dispersion: add water to the mixture of tellurene and graphene oxide and stir to obtain a mixed solution, use pulsed tip ultrasonic method to ultrasonicate the mixed solution, and concentrate the mixed solution after the ultrasound is completed, Prepare tellurene / graphene oxide mixed dispersion;
[0040] Spinning: use the tellurene...
Embodiment 1
[0073] Such as figure 1 Shown, a kind of preparation method of tellurene / graphene hybrid porous fiber with radial opening comprises the steps:
[0074] Prepare the mixture of tellurene and graphene oxide: provide tellurene pre-exfoliation dispersion liquid, take 10ml tellurene pre-exfoliation dispersion liquid from it, weigh it, record its mass as m g, and obtain the concentration w=0.1 of tellurene pre-exfoliation dispersion liquid *mg / ml. Add graphene oxide to the remaining tellurene pre-stripping dispersion according to the mass ratio of tellurene to graphene oxide at 1:1 to obtain a mixed solution B. Put the mixed solution B in a constant temperature water bath ultrasonic machine for ultrasonication, keep the temperature of the water bath below 10°C, and ultrasonicate for 12 hours. The mixed solution after the ultrasonication was completed was centrifuged with a centrifuge at a rotation speed of 10000 rpm and a centrifugation time of 60 min. After centrifugation, discar...
Embodiment 2
[0079] The difference between Example 2 and Example 1 is that the source of the tellurene pre-exfoliation dispersion is different. In Example 2, tellurene / graphene with radial openings can also be prepared by preparing the tellurene pre-exfoliation dispersion. Hybrid porous fibers.
[0080] The preparation process of tellurene pre-stripping dispersion is as follows:
[0081] Take 3g of Te powder and add it to 500ml of N-methylpyrrolidone and shake for 1min for preliminary mixing to obtain mixed solution A. The prepared mixed solution A was placed in a constant temperature water bath ultrasonic machine to ultrasonically peel off Te powder. The ultrasonic constant temperature should be lower than 10°C. Ultrasound for 72 hours. During the ultrasonic process, the mixture needs to be taken out every 6 hours and shaken for 1 minute. After shaking, put it back into the ultrasonic machine to continue ultrasonication. After the ultrasonication is completed, the mixed solution A is c...
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