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Preparation method of fluorine-doped lamellar black titanium dioxide nano material

A technology of black titanium dioxide and nanomaterials, applied in the field of nanomaterials, can solve the problems of visible light absorption and the influence of carrier transport and separation ability, and achieve the effect of improving photocatalytic performance, enhancing performance and low cost

Active Publication Date: 2015-12-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to TiO2 being a wide bandgap semiconductor (~3eV), its visible light absorption and carrier transport and separation capabilities are affected

Method used

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  • Preparation method of fluorine-doped lamellar black titanium dioxide nano material
  • Preparation method of fluorine-doped lamellar black titanium dioxide nano material
  • Preparation method of fluorine-doped lamellar black titanium dioxide nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Add 25mL of n-propanol into the beaker, then add 2mL of tetra-n-butyl titanate, and stir well;

[0021] (2) Add 0.4mL of hydrofluoric acid to the solution, then stir for 2 hours;

[0022] (3) Transfer the obtained solution to a high-pressure reactor, and conduct a hydrothermal reaction at 180°C for 18 hours;

[0023] (4) Wash the precipitate obtained after the reaction with deionized water and absolute ethanol until the filtrate is neutral, and then dry it;

[0024] (5) The obtained sample was calcined at 430°C under an atmosphere of argon and hydrogen to obtain fluorine-doped lamellar black titanium dioxide nanomaterials.

Embodiment 2

[0026] (1) Add 20mL of n-propanol into the beaker, then add 1mL of tetra-n-butyl titanate, and stir well;

[0027] (2) Add 0.15mL of hydrofluoric acid to the solution, then stir for 1 hour;

[0028] (3) Transfer the obtained solution to a high-pressure reactor, and conduct a hydrothermal reaction at 180°C for 15 hours;

[0029] (4) Wash the precipitate obtained after the reaction with deionized water and absolute ethanol until the filtrate is neutral, and then dry it;

[0030] (5) Calcining the obtained sample at 450°C under an atmosphere of argon and hydrogen to obtain fluorine-doped black sheet-like titanium dioxide nanomaterials.

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Abstract

The invention discloses a preparation method of a fluorine-doped lamellar black titanium dioxide nano material and belongs to the technical field of nano materials. The preparation method comprises the steps of 1) preparing a mixture system of tetrabutyl titanate, n-propyl alcohol and hydrofluoric acid and stirring the system for a certain time; 2) moving the mixed solution to a high-pressure reaction kettle and performing a reaction for a certain time at a certain temperature; 3) washing and drying a reaction product, and heating the reaction product under a protective atmosphere for a certain time to prepare the fluorine-doped lamellar black titanium dioxide nano material. The fluorine-doped lamellar black titanium dioxide nano material, compared with titanium dioxide P25 which has been commercially produced, is more excellent in photo-absorption and electron transmission performances.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, in particular to a method for preparing a fluorine-doped lamellar black titanium dioxide nanomaterial, which has excellent light absorption and electrochemical properties, can be used as a catalyst for photocatalysis, and can also be used as a Anode materials are used in dye-sensitized solar cells. Background technique [0002] Titanium dioxide (TiO 2 ) is an environmentally friendly, chemically stable, and relatively inexpensive semiconductor material. Due to its excellent charge transport performance and high catalytic performance under light conditions, it has been widely used in photoelectrochemical catalysis, dye-sensitized solar cells, perovskite batteries, and lithium-ion batteries. However, due to TiO2 being a wide bandgap semiconductor (~3eV), its visible light absorption and carrier transport and separation capabilities are affected. Therefore, by improving the electronic energ...

Claims

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Application Information

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IPC IPC(8): B01J21/06H01G9/20H01G9/042B82Y30/00B82Y40/00
CPCB01J37/031Y02E10/542C01G23/053C09C1/3653C01P2002/54C01P2002/85C01P2004/64C01P2004/84B01J27/135B01J37/06B01J37/08H01G9/2031B01J35/30B01J35/23B01J35/39
Inventor 李美成陈杰威贺延聪谢碧霞刘文健李瑞科
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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