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A method for preparing anatase titanium dioxide nanoribbon array film

A technology of titanium dioxide and nanobelts, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of high industrialization cost, poor environmental friendliness, and high equipment requirements, and achieve low equipment requirements, Low cost and good repeatability

Active Publication Date: 2016-01-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a high temperature and high pressure environment, high energy consumption, poor environmental friendliness, great safety hazards, and high industrialization costs
Invention patent CN101306839A discloses a method for preparing titanium dioxide nanoribbons by electrospinning, but the titanium source used in this method is titanium alkoxide, which is easily hydrolyzed; polymethyl methacrylate (PMMA) and polyvinylpyrrolidone ( PVP) as a polymer template; at the same time, it requires high equipment
So far, there is no simple, template-free method for fabricating titania nanoribbon array thin films

Method used

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  • A method for preparing anatase titanium dioxide nanoribbon array film
  • A method for preparing anatase titanium dioxide nanoribbon array film
  • A method for preparing anatase titanium dioxide nanoribbon array film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Mix hydrofluoric acid with a mass percentage concentration of 55%, nitric acid with a mass percentage concentration of 65% and deionized water in a volume ratio of 1:3:6 to obtain a pickling solution;

[0022] 2) Add 0.0024 mol / L melamine and 0.04 mol / L tungstic acid to 50 ml of 30% hydrogen peroxide solution by mass to obtain a reaction solution;

[0023] 3) Set the size to 5×5×0.01 (cm 3 ) The surface of the metal titanium plate is pickled with pickling solution, and then cleaned with deionized water in ultrasonic waves. Immerse the cleaned metal titanium plate in 50 ml of reaction solution, at 90 o Reaction under C for 60 hours;

[0024] 4) After the reaction, the titanium plate was washed with deionized water, and dried at 450 o C heat treatment for 1 hour.

[0025] Response result

[0026] The surface of the titanium plate is uniformly generated as figure 1 In the titanium dioxide nanobelt film shown, the average width of the nanobelt is about 55 nanometer...

Embodiment 2

[0028] 1) Mix hydrofluoric acid with a mass percentage concentration of 55%, nitric acid with a mass percentage concentration of 65% and deionized water in a volume ratio of 1:3:6 to obtain a pickling solution;

[0029] 2) Add 0.0024 mol / L melamine and 0.004 mol / L tungstic acid to 50 ml of 30% hydrogen peroxide solution by mass to obtain a reaction solution;

[0030] 3) Set the size to 5×5×0.01 (cm 3 ) The surface of the metal titanium plate is pickled with pickling solution, and then cleaned with deionized water in ultrasonic waves. Immerse the cleaned metal titanium plate in 50 ml of reaction solution, at 60 o Reaction under C for 12 hours;

[0031] 4) After the reaction, the titanium plate was washed with deionized water, and dried at 450 o C heat treatment for 1 hour.

[0032] Response result

[0033] The surface of the titanium plate is uniformly generated as image 3 In the titanium dioxide nanoribbon film shown, the average width of the nanoribbon is about 35 nano...

Embodiment 3

[0035] 1) Mix hydrofluoric acid with a mass percentage concentration of 55%, nitric acid with a mass percentage concentration of 65% and deionized water in a volume ratio of 1:3:6 to obtain a pickling solution;

[0036] 2) Add 0.0024 mol / L melamine and 0.008 mol / L tungstic acid to 50 ml of 30% hydrogen peroxide solution by mass to obtain a reaction solution;

[0037] 3) Set the size to 5×5×0.01 (cm 3 ) The surface of the metal titanium plate is pickled with pickling solution, and then cleaned with deionized water in ultrasonic waves. Immerse the cleaned metal titanium plate in 50 ml of reaction solution, at 85 o Reaction under C for 48 hours;

[0038] 4) After the reaction, the titanium plate was washed with deionized water, and dried at 450 o C heat treatment for 1 hour.

[0039] Response result

[0040] The surface of the titanium plate is uniformly generated as Figure 4 In the titanium dioxide nanoribbon film shown, the average diameter of the nanoribbon is about 58 ...

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Abstract

The invention discloses a method for preparing an anatase titanium dioxide nanoribbon array membrane. The method adopts a non-hydrothermal sedimentation method and comprises the following steps: immersing a pickled metal titanium plate into a hydrogen peroxide reaction liquid with melamine and tungstic acid, reacting for 6-60 hours at 60-90 DEG C, washing the reacted titanium plate by using deionized water, drying, and preserving heat for 1 hour at 450 DEG C. The method does not need a hydrothermal environment of high temperature and high pressure and is simple and feasible in preparation process and low in cost, the prepared anatase titanium dioxide nanoribbon array membrane is uniform, good in crystallization, solid in combination with a substrate, applicable to large-scale industrial production, and has the potential to be practically applied to fields such as photocatalysis, photoelectrocatalysis and thin-film solar cell photoelectrodes.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide nano-belt array film, in particular to a non-hydrothermal deposition method for an anatase titanium dioxide nano-belt array film. Background technique [0002] Titanium dioxide thin films are widely used in photocatalysis, photoelectrocatalysis, solar cells, electrochromism, gas sensors and other fields. Studies have shown that the morphology of titanium dioxide has an important impact on its performance, therefore, the research on the preparation of titanium dioxide nanomaterials with special morphology has received extensive attention. So far, nanotubes, nanowires, nanorods, nanosheets, nanoflowers, hollow microspheres, etc. have been prepared, but relatively little research has been done on nanobelts. Nanoribbons are sheet-like structures with a large aspect ratio, and their size characteristics are between one-dimensional nanowires and two-dimensional nanosheets, taking into accoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/40B82Y40/00B82Y30/00
Inventor 赖璐璐吴进明
Owner ZHEJIANG UNIV
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