Titanium dioxide nanowire and preparation method thereof

A titanium dioxide and nanowire technology, applied in the directions of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of difficult nanowire shape control, cumbersome preparation steps, high production cost, and achieve good photocatalysis. , The effect of shortening the process flow and reducing the production cycle

Inactive Publication Date: 2018-01-26
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation steps of these two methods are all cumbersome, the production cost is high, the production cycle is long, and in the preparation process, the TiO 2 It is difficult to control the shape of nanowires

Method used

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  • Titanium dioxide nanowire and preparation method thereof
  • Titanium dioxide nanowire and preparation method thereof
  • Titanium dioxide nanowire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] TiO was prepared by the following procedure 2 Nanowires:

[0043] (1) Fully mix 8mL butyl titanate and 16mL absolute ethanol, slowly drop 3mL of 10mol / L NaOH solution under magnetic stirring, and obtain a uniform precursor solution after magnetic stirring for 30min;

[0044] (2) Put the precursor solution in a 50mL hydrothermal reaction kettle, and conduct a hydrothermal reaction at 180°C in a constant temperature drying oven for 24 hours;

[0045] (3) Separate the solid substance obtained after the hydrothermal reaction, pickle with 0.1mol / L HCl for 12 hours, wash the precipitate after pickling with deionized water until neutral, and then dry the precipitate after washing with water at 80°C drying in the oven to obtain metatitanic acid;

[0046] (4) Grind the dried metatitanate into powder, put it into a muffle furnace, heat it for 1 hour, then raise the temperature to 450°C, keep it for 2 hours, and then cool it with the furnace;

[0047] (5) Grinding the sintered ...

Embodiment 2

[0053] TiO was prepared by the following process 2 Nanowires:

[0054] (1) Mix the titanium source with an organic reagent, and conduct a hydrothermal reaction under the action of an alkali to obtain a nano-titanium salt;

[0055] (2) reacting the nano-titanium salt with an acid to obtain an intermediate product;

[0056](3) roasting the intermediate product to obtain the titanium dioxide nanowire;

[0057] in:

[0058] Titanium source is butyl titanate;

[0059] The organic reagent is ethanol;

[0060] The volume ratio of titanium source to organic reagent is 1:1.5~3;

[0061] The concentration of alkali is 5~15mol / L, preferably strong alkali, further, the volume ratio of titanium source and alkali is 1:0.3~0.4;

[0062] The temperature of the hydrothermal reaction is 170~190°C, and the reaction time is preferably 18~26h;

[0063] H of the acid described in step (2) + The concentration is 0.05~0.15mol / L;

[0064] The roasting temperature in the step (3) is 400-500° C...

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Abstract

The invention discloses a titanium dioxide nanowire and a preparation method thereof. The preparation method comprises the following process: (1) a titanium source and an organic reagent are mixed andsubjected to a hydrothermal reaction under the action of alkali, and nano titanium salt is obtained; (2) the nano titanium salt reacts with acid, and an intermediate product is obtained; (3) the intermediate product is calcined and the titanium dioxide nanowire is obtained. Titanium dioxide in the nanowire form can be obtained, the production efficiency is high, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide nanowires. Background technique [0002] Nano-TiO 2 As an n-type semiconductor, it can be widely used in solar cells, photocatalytic water splitting to produce hydrogen, photocatalytic degradation of organic matter, chemical sensors, coatings and other fields. [0003] Nano-TiO 2 Common microscopic forms include nanoparticles, nanowires, nanobelts, nanorods, nanospheres, nanotubes, etc., and common crystal structures include amorphous, rutile, anatase, and mixed crystals. The microscopic morphology and crystal structure of nano-TiO 2 Both physical and chemical properties have an important influence. [0004] In different microscopic forms, TiO 2 Nanowires have extremely high specific surface area and regularity, and have strong light absorption ability. After light absorption, more photogenerated electron-hole pairs can be generated, and at the same time, their linear shape provides ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B01J21/06
Inventor 孙艳孔清泉江峰范雨鑫曾俊谚刘强曹明飞刘恩东
Owner CHENGDU UNIV
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