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spiral tio 2 /Graphene composite fiber, its preparation method and application

A graphene composite and helical technology, which is applied in the direction of spinning solution preparation, fiber chemical characteristics, and measurement of ultrasonic/sonic/infrasonic waves, can solve the problems of undetectable micro-vibration of the liquid phase system and complex structure of the detection device, and achieve experimental results. Simple process, high sensitivity and low cost

Active Publication Date: 2021-06-29
江西省纳米技术研究院
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Problems solved by technology

[0002] The vibration detection devices in the prior art mainly have the following disadvantages: (1) the structure of the existing detection devices is relatively complicated, and the detection is mostly for the detection of relatively large vibrations; (2) the existing vibration detection devices are mostly for the detection of vibrations of actual objects , the microvibration in the liquid phase system cannot be detected

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  • spiral tio <sub>2</sub> /Graphene composite fiber, its preparation method and application
  • spiral tio <sub>2</sub> /Graphene composite fiber, its preparation method and application
  • spiral tio <sub>2</sub> /Graphene composite fiber, its preparation method and application

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[0034] One aspect of the embodiments of the present invention provides a helical TiO 2 / The preparation method of graphene composite fiber, it comprises:

[0035] Provide a spinning solution comprising uniformly dispersed nano-titanium dioxide and / or nano-hydrogenated titanium dioxide and graphene oxide;

[0036] By wet spinning technology, the spinning solution is spun into helical TiO 2 / graphene oxide composite fiber;

[0037] The helical TiO 2 / Graphene oxide composite fiber reduction, then heating and setting to obtain helical TiO 2 / graphene composite fiber.

[0038] In some embodiments, the particle size of the nano-titanium dioxide and / or nano-hydrogenated titanium dioxide is 5-300 nm.

[0039] In some embodiments, the mass ratio of nano titanium dioxide and / or nano hydrogenated titanium dioxide to graphene oxide in the spinning solution is below 1:1.

[0040] Further, the number of layers of the graphene oxide is 2-10, and the sheet size is 4-150 μm.

[0041]...

Embodiment 1

[0074] (1) Nano-titanium dioxide or hydrogenated nano-titanium dioxide with a particle size of 100nm and a graphene oxide dispersion liquid having 2-5 layers are mixed according to a mass ratio of 1:1 to prepare a spinning solution for subsequent use;

[0075] (2) Inject the spinning solution into figure 1 In the spinning device shown, with an injection speed of 15mm / s and a rotation speed of 48r / min, at a position of 3mm from the rotation axis, the helical TiO2 was prepared by wet spinning 2 / Graphite oxide composite ene fiber or helical H-TiO 2 / graphene oxide composite fiber;

[0076] (3) Helical TiO fixed on a glass rod of corresponding size by HI chemical reduction method 2 / graphene oxide composite fiber or helical H-TiO 2 / Graphene oxide composite fiber reduced to TiO 2 / graphene composite fiber or H-TiO 2 / graphene composite fiber, wherein the concentration of HI solution is 10wt%, and reduced at 90°C for 6h;

[0077] (4) the helical TiO 2 / graphene composite...

Embodiment 2

[0084] The conditions of this embodiment and embodiment 1 are basically the same, the difference is that the content of the added titanium dioxide is 10%, with the injection speed of 5mm / s and the rotation speed of 15r / min, the position of 3mm away from the rotation axis passes through the wet Spinning method, HI chemical reduction method adopts a temperature of 120°C and a time of 1h. The optical photo of the spring obtained after reduction annealing is shown in Figure 11 . Wherein, the annealing temperature is 400°C, and the annealing time is 6h. Finally, the fiber is used as the working electrode, and the liquid vibration of the three-electrode system is used for detection. For the results, please refer to Figure 12 .

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Abstract

The invention discloses a helical TiO 2 / Graphene composite fiber, its preparation method and application. The preparation method includes: providing a spinning solution comprising uniformly dispersed nano-titanium dioxide and / or nano-hydrogenated titanium dioxide and graphene oxide; spinning the spinning solution into a helical TiO by wet spinning technology. 2 / graphene oxide composite fiber; the helical TiO 2 / Graphene oxide composite fiber reduction, then heating and setting to obtain helical TiO 2 / graphene composite fiber. The invention also discloses a micro-vibration detection system and a corresponding micro-vibration detection method. The present invention induces helical TiO by vibration 2 The deformation of the graphene / graphene composite fiber causes the effective illumination area of ​​the composite fiber to change, resulting in a photocurrent change for vibration detection; and the preparation is simple and easy, the cost is low, and the micro-vibration detection system has high sensitivity and good stability.

Description

technical field [0001] The present invention relates to a kind of TiO 2 / Graphene composite fiber, especially related to a helical TiO applied to micro-vibration detection 2 / graphene composite fiber or helical H-TiO 2 The invention discloses a graphene / graphene composite fiber, a preparation method thereof, and an application thereof in micro-vibration detection, belonging to the technical field of functional energy devices. Background technique [0002] The vibration detection devices in the prior art mainly have the following disadvantages: (1) the structure of the existing detection devices is relatively complicated, and the detection is mostly for the detection of relatively large vibrations; (2) the existing vibration detection devices are mostly for the detection of vibrations of actual objects , microvibrations in the liquid phase system cannot be detected. Contents of the invention [0003] The main purpose of the present invention is to provide a helical TiO ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01D1/02D01D5/06D01D10/02G01H11/06
CPCD01D1/02D01D5/06D01D10/02D01F8/18G01H11/06
Inventor 张永毅牛宇涛李清文
Owner 江西省纳米技术研究院
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