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Nanocrystalline titanium dioxide film of two-specification pore structure and manufacturing method of nanocrystalline titanium dioxide film

A pore structure, titanium dioxide technology, applied in titanium dioxide, titanium oxide/hydroxide, nanotechnology for materials and surface science, etc., can solve the problems of complex preparation process, unfavorable industrialization, single pore size, etc. Simple process, low cost and low synthesis temperature

Inactive Publication Date: 2014-04-16
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the titanium dioxide film prepared by this method, the pore size is single, and the preparation process is complicated, the cost is high, and it is not conducive to industrialization.

Method used

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  • Nanocrystalline titanium dioxide film of two-specification pore structure and manufacturing method of nanocrystalline titanium dioxide film
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  • Nanocrystalline titanium dioxide film of two-specification pore structure and manufacturing method of nanocrystalline titanium dioxide film

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Mix anhydrous ethanol, tetrabutyl titanate and diethanolamine in a water bath at 30°C with continuous stirring and uniform mixing, and let stand for 30 minutes to form tetrabutyl titanate ethanol complex solution, tetrabutyl titanate and diethanolamine The molar ratio of is 1: 1.5;

[0025] (2) Mix deionized water and absolute ethanol uniformly at a volume ratio of 1:2 to form an aqueous ethanol solution, and then drop the aqueous ethanol solution into the titanic acid prepared in step (1) at a speed of 2mL / min under stirring conditions of 500rpm In the tetrabutyl alcohol complex solution, the pH value of the control solution is at 5.5, and the molar ratio of tetrabutyl titanate to water is 1: 25;

[0026] After the titration, add the non-ionic surfactant polyethylene glycol 2000, and continue to stir until the concentration is 0.3mol L -1 Titanium dioxide sol, the addition of polyethylene glycol 2000 is 1.6g / 100ml, and the temperature of the control system is 30°C...

Embodiment 2

[0030] (1) Mix anhydrous ethanol, tetrabutyl titanate and citric acid in a water bath at 35°C with continuous stirring and uniform mixing, and let stand for 30 minutes to form tetrabutyl titanate ethanol complex solution, tetrabutyl titanate and citric acid The molar ratio is 1: 2;

[0031] (2) Evenly mix deionized water and absolute ethanol at a volume ratio of 1:2 to form an aqueous ethanol solution, and then drop the aqueous ethanol solution into the titanic acid prepared in step (1) at a speed of 3mL / min under stirring at 600rpm In the tetrabutyl alcohol complex solution, the pH value of the control solution is at 6.0, and the molar ratio of tetrabutyl titanate to water is 1:30;

[0032] After the titration, add the non-ionic surfactant polyethylene glycol 2000, and continue to stir until the concentration is 0.45mol L -1 Titanium dioxide sol, the amount of polyethylene glycol 2000 added is 2.0g / 100ml, and the temperature of the system is controlled at 30°C during the who...

Embodiment 3

[0037] (1) Mix anhydrous ethanol, tetrabutyl titanate and acetylacetone under the condition of 40°C water bath with continuous stirring and uniformity, and let stand for 30 minutes to form tetrabutyl titanate ethanol complex solution, tetrabutyl titanate and acetylacetone The mol ratio is 1: 5;

[0038] (2) Mix deionized water and absolute ethanol uniformly at a volume ratio of 1:4 to form an aqueous ethanol solution, and then drop the aqueous ethanol solution into the titanic acid prepared in step (1) at a speed of 4mL / min under stirring at 700rpm In the tetrabutyl alcohol complex solution, the pH value of the control solution is 6.5, and the molar ratio of tetrabutyl titanate to water is 1: 35;

[0039] After the titration, add the non-ionic surfactant polyethylene glycol 2000, and continue to stir until the concentration is 0.5mol L -1 Titanium dioxide sol, the addition of polyethylene glycol 2000 is 2.5g / 100ml, and the temperature of the control system is 40°C during the ...

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Abstract

The invention belongs to the technical field of nanocrystalline solar cell manufacturing, and particularly relates to a nanocrystalline titanium dioxide film of a two-specification pore structure and a manufacturing method of the nanocrystalline titanium dioxide film. The pore structure of the nanocrystalline titanium dioxide film includes two specifications, that is, 1-5nm and 100-300nm, and the crystal form is anatase nanocrystalline. The manufacturing method includes the steps that non-ionic surface active agents serve as a soft template, firstly, absolute ethyl alcohol, tetrabutyl titanate and organic chelating agents are uniformly stirred and mixed to form tetrabutyl titanate and ethyl alcohol complexation solutions, ethanol water is dropped into the tetrabutyl titanate and ethyl alcohol complexation solutions, the non-ionic surface active agents are added after titration is finished, stirring continues to be carried out until titanium dioxide sol with the concentration of 0.3-0.65mol.L-1 is obtained, film coating and calcination are carried out after still ageing, and ultimately the anatase nanocrystalline titanium dioxide film of the two-specification pore structure of 1-5nm and 100-300nm is obtained. The manufacturing method is simple and can be widely used for film coating of substrates which are of different shapes and made of different materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanocrystalline solar cells, and in particular relates to a nanocrystalline titanium dioxide film with a double-scale pore structure and a preparation method thereof. Background technique [0002] Energy crisis and environmental pollution have promoted the research of solar cells and environmental pollution treatment materials, nanocrystalline Ti0 2 It has the characteristics of high catalytic activity, good chemical stability, direct use of solar energy for reaction, non-toxic safety, low price, etc., thus becoming an ideal new solar cell photoanode material and self-cleaning material for photocatalytic degradation of pollutants. Materials, photocatalysis, gas sensors, etc. have a wide range of applications. At present, the main obstacle hindering its application and popularization is the low photocatalytic efficiency of the reaction and the low absorption efficiency of visible light. Ti...

Claims

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Application Information

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IPC IPC(8): H01G9/20H01G9/042C01G23/053B82Y30/00
Inventor 李明春伍阳李昆刘鹏
Owner SHENYANG POLYTECHNIC UNIV
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