Preparation method of titanium dioxide based graphene /La3+ carbon fibers

A technology of titanium dioxide and graphene, applied in the field of functional fibers, can solve the problems of low utilization rate of visible light and low photon quantum yield, and achieve good antibacterial effect, simple equipment and simple production equipment

Inactive Publication Date: 2016-09-07
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But TiO 2 There are still some scientific and technical problems in the actual use of photocatalytic materials, mainly in two aspects: 1) TiO 2 As a photocatalytic material, the light absorption wavelength range is limited, and the utilization rate of visible light is not high; 2) The light quantum yield is low

Method used

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  • Preparation method of titanium dioxide based graphene /La3+ carbon fibers
  • Preparation method of titanium dioxide based graphene /La3+ carbon fibers
  • Preparation method of titanium dioxide based graphene /La3+ carbon fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Material preparation: Weigh 2g of polyacrylonitrile (PAN), 25ml of DMF, 2ml of glacial acetic acid and 2.5ml of tetra-n-butyl titanate (Ti(OC 4 h 9 ) 4 )mixture.

[0031] 2. Adopt: Hummers method to prepare graphene, and carry out ultrasonic treatment under the condition of room temperature 25 ℃. The mass ratio of graphene (GO) doping amount to Ti is 0.05.

[0032] 3. Gradually add GO / DMF mixed solution into PAN / DMF, stir in vacuum, and sonicate for 10 hours, and finally get 25ml GO / PAN spinning solution; the volume ratio of GO / DMF to DMF in PAN / DMF is 1:1.

[0033] 4. Then add 0.031g of lanthanum nitrate to the mixture containing 2ml of glacial acetic acid and 2.5ml of tetra-n-butyl titanate (Ti(OC 4 h 9 ) 4 ) in the mixed solution, forming La 3+ Doped TiO(OAc) 2 The solution was then slowly added to the above GO / PAN mixed solution under magnetic stirring. After the dropwise addition, magnetic stirring was continued for 10 h to finally obtain a spinning solu...

Embodiment 2

[0039] 1. Material preparation: Weigh 2g of polyacrylonitrile (PAN), 25ml of DMF, 2ml of glacial acetic acid and 2.5ml of tetra-n-butyl titanate (Ti(OC 4 h 9 ) 4 ) mixed solution, the mass ratio of GO doping amount to Ti is 0.10.

[0040] 2. Steps 2, 3, 4, and 5 are repeated in Example 1.

[0041] 3. Antibacterial test: as in Example 1

[0042] By comparing the size of the antibacterial zone diameter to compare the strength of the sample's bactericidal performance, the antibacterial diameter is 19mm, GO / La3+ co-doped TiO 2 (GLCT) nanofibers have a better antibacterial effect on Escherichia coli.

Embodiment 3

[0044] 1. Material preparation: weigh 2g polyacrylonitrile (PAN), measure 25ml DMF, 2ml glacial acetic acid and 2.5ml tetra-n-butyl titanate (Ti(OC4H9)4) mixed solution, GO doping amount and Ti mass The ratio is 0.2.

[0045] 2. Steps 2, 3, 4, and 5 are repeated in Example 1.

[0046] By comparing the size of the diameter of the inhibition zone to compare the strength of the bactericidal performance of the sample, the antibacterial diameter is 22mm, GO / La 3+ co-doped TiO 2 (GLCT) nanofibers have good antibacterial effect on Escherichia coli.

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Abstract

The invention discloses a preparation method of titanium dioxide based graphene /La3+ carbon fibers. The preparation method includes the following steps that 1, graphene and polyacrylonitrile are dissolved in a DMF solution to prepare a graphene/polyacrylonitrile/DMF mixed solution, wherein the graphene concentration is 0.0007-0.0056 g/mL, and the polyacrylonitrile concentration is 0.08 g/mL; 2, lanthanum nitrate is added to a glacial acetic acid and tetra-n-butyl titanate mixed solution to form an La3+ doped TiO (OAc)2 solution; 3, the solution formed in the step 2 is slowly added to the graphene/polyacrylonitrile/DMF mixed solution in the step 1 under the action of mixing, and vacuum mixing is performed to obtain a spinning solution after adding is performed dropwise; 4, the spinning solution in the step 3 performs electrostatic spinning to obtain a product. The preparation method has the advantages of high strength, simple production equipment, easy and convenient operation and a good antibacterial effect.

Description

technical field [0001] The invention relates to the technical field of functional fibers, in particular to a titanium dioxide-based graphene / La 3+ Preparation method of carbon fiber. Background technique [0002] Since the 20th century, with the development of society and the continuous improvement of people's living standards, environmental pollution has attracted more and more attention. Indoor and outdoor air pollution, soil pollution, water pollution, etc. have increasingly affected people's health. At present, antibacterial materials have become a cross-century environmental protection and health product recognized by countries all over the world. With the development of my country's economy and the improvement of people's living standards, the application of antibacterial materials is also increasing. [0003] Extensive use of semiconductor heterogeneous photocatalytic oxidation technology for antibacterial performance research has become a research hotspot for resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J35/06A01N59/00A01P1/00
CPCA01N59/00B01J23/10B01J35/004B01J35/06
Inventor 王芳芳张伟孙启龙张小丽
Owner NANTONG UNIVERSITY
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