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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.

Active Publication Date: 2020-09-08
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of a tellurene / graphene hybrid porous fiber with radial openings provided by the present invention can effectively solve the problems of uneven dispersion of tellurene and graphene, difficulty in controlling the ratio of tellurene and graphene in the prior art, Poor spinnability, relatively large flexibility in the selection of additives and the content of additives, etc. The prepared tellurene / graphene hybrid fibers are easy to control in terms of flexibility, diameter, etc., with superior physical properties and remarkable photoelectric effect. Widely used in flexible photodetectors

Method used

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  • Tellurium terpene/graphene hybridization porous fibers with radial opening holes and preparation method and application thereof
  • Tellurium terpene/graphene hybridization porous fibers with radial opening holes and preparation method and application thereof

Examples

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preparation example Construction

[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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Abstract

The invention provides a preparation method of tellurium terpene / graphene hybridization porous fibers with radial opening holes. The method includes the steps that a mixture of the tellurium terpene and oxidized graphene is prepared, a mixing dispersion solution of the tellurium terpene / oxidized graphene is prepared, and spinning and post-processing are made. According to the preparation method oftellurium terpene / graphene hybridization porous fibers with radial opening holes, the defects that the tellurium terpene is prone to stacking with each other, the dispersity in water is poor, and thetellurium terpene dispersion solution itself has no spinnability is solved through the function of the oxidized graphene to assist dispersion and spinning, and the orientation construction of holes of porous tellurium terpene / oxidized graphene in the process of spinning is achieved. Tellurium terpene / graphene hybridization porous fibers with radial opening holes and an application thereof are provided.

Description

technical field [0001] The present invention relates to the technical field of nano-semiconductor materials, in particular to a tellurene / graphene hybrid porous fiber with radial openings, and the present invention also relates to the tellurene / graphene hybrid porous fiber with radial openings preparation methods and applications. Background technique [0002] The working principle of the photodetector is based on the photoelectric effect, and the photodetector can convert light signals into electrical signals. It is widely used in various fields of military and national economy. In the visible or near-infrared band, it is mainly used for ray measurement and detection, industrial automatic control, photometry, etc.; in the infrared band, it is mainly used for missile guidance, infrared thermal imaging, infrared remote sensing, etc. The electrodes of existing photodetectors are usually noble metals such as gold and silver, or ITO electrodes with poor bending properties. Ph...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01D5/06D01D1/02H01L51/46
CPCD01F9/08D01D5/06D01D1/02H10K85/20H10K2102/00Y02E10/549
Inventor 张晗孟思
Owner SHENZHEN UNIV
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