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Mumm-shaped 3D TiO nanometer material and preparation method thereof

A nanomaterial, chrysanthemum technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of loss of titanium raw materials, inability to prepare three-dimensional TiO, and increased cost.

Inactive Publication Date: 2011-01-26
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using titanium plates as raw materials, treatment with a mixed solution of hydrogen peroxide and hydrochloric acid or hydrogen peroxide and nitric acid will cause the loss of titanium raw materials and increase the cost, and only a thin layer of TiO can be prepared on the surface of the titanium plate. 2 , cannot prepare complex three-dimensional TiO 2 Nano-structure

Method used

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  • Mumm-shaped 3D TiO nanometer material and preparation method thereof
  • Mumm-shaped 3D TiO nanometer material and preparation method thereof
  • Mumm-shaped 3D TiO nanometer material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Weigh 0.1 gram of titanium powder and put it into 150ml of a mixed solution composed of 30% hydrogen peroxide and 0.1mol / L nitric acid. The molar ratio of hydrogen peroxide to nitric acid is 90:1. In an oven at 80°C, react for 120 minutes, then take it out immediately, and cool it in air. Measure 12ml of said solution with a graduated cylinder and mix it with 28ml of 40% sodium hydroxide solution with a mass fraction of 40% in a hydrothermal reactor with a capacity of 50ml. Minutes later, react in an oven at 150°C for 5 hours; after the reaction, wash the product with 0.1mol / L nitric acid and high-purity water for several times until the pH value reaches about 7; then bake in an oven at 80°C for 10 hours Dry.

[0034] In this example, the solution obtained after the chemical treatment of titanium powder is a bright yellow solution, and the product after the hydrothermal reaction is a chrysanthemum-shaped three-dimensional TiO 2 nanomaterials.

[0035] figure 1 Shown...

Embodiment 2

[0037] Weigh 100 grams of titanium plates and put them into 1000ml of a mixed solution consisting of 30% hydrogen peroxide and 1mol / L hydrochloric acid. The molar ratio of hydrogen peroxide to hydrochloric acid is 9:1. After stirring evenly, put the solution into a solution whose temperature has reached In an oven at 50°C, react for 24 hours, then take it out immediately, and cool it in air. Measure 30ml of said solution with a graduated cylinder and mix it with 30ml of potassium hydroxide solution with a mass fraction of 30% in a hydrothermal reactor with a capacity of 100ml. The volume ratio of titanium-containing solution and potassium hydroxide solution is 1: 1, and stir for five Minutes later, react in an oven at 200°C for 1 hour; after the reaction, wash the product with 0.01mol / L hydrochloric acid and high-purity water for several times until the pH value reaches about 7; then bake in an oven at 100°C for 5 hours Dry.

[0038] The titanium-containing solution obtained ...

Embodiment 3

[0040] Weigh 50 grams of titanium tube, put it into 500ml of mixed solution composed of 30% hydrogen peroxide and 0.5mol / L nitric acid, the molar ratio of hydrogen peroxide and nitric acid is 18:1; In an oven at 60°C; react for 20 hours, then remove immediately and cool in air. Measure 5ml of said solution with a graduated cylinder and mix it with 75ml of 10% potassium hydroxide solution in a 100ml capacity hydrothermal reactor. The volume ratio of titanium-containing solution to potassium hydroxide solution is 1: 15, and stir for five Minutes later, react in an oven at 180°C for 3 hours; after the reaction, wash the product with 1mol / L nitric acid and high-purity water several times until the pH value reaches about 7; then dry it in an oven at 70°C for 15 hours .

[0041] The titanium-containing solution obtained in this embodiment is a bright yellow solution, and the obtained TiO 2 Chrysanthemum-shaped three-dimensional TiO 2 nanomaterials.

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Abstract

The invention relates to a mumm-shaped 3D TiO2 nanometer material. The diameter of the flower is from 2 to 4 micrometers, a plurality of layers of petals are sent out from the central area, the length of the nanometer belt-shaped petal is from 100 nanometers to 2 micrometers, and the width of the nanometer belt-shaped petal is from 10 to 30 nanometers. The preparation method of the 3D TiO2 nanometer material is as following: titanium is used as a raw material and chemically processed to be mixed with a sodium hydroxide or potassium hydroxide solution, and hydro-thermal reaction is carried outunder a certain temperature. After the reaction is ended, the solution is rinsed until the pH value is about 7, and then the solution is dried in a baking oven. Compared with Degussa P25 nanometer TiO2, the absorption performance and the photochemical catalysis activity of the 3D TiO2 nanometer material of the invention for degrading methylene blue dye are higher.

Description

technical field [0001] The invention relates to titanium dioxide nanomaterials and preparation methods thereof, in particular to a chrysanthemum-shaped three-dimensional TiO 2 Nanomaterials and their preparation methods. Background technique [0002] Titanium dioxide is a safe, non-toxic, chemically stable, and low-cost semiconductor oxide that has been widely used in cosmetics, textiles, coatings, rubber, printing, photocatalysis, sewage treatment, and solar cells. [0003] At present, the methods for preparing titanium dioxide mainly include: magnetron sputtering method, chemical vapor deposition method, sol-gel method, hydrothermal method, etc. Magnetron sputtering and chemical vapor deposition usually require high vacuum and large-scale equipment, requiring large investment and high production costs. The sol-gel method adopts the hydrolysis of titanium tetrachloride or tetrabutyl titanate to prepare the sol, and the reaction process is difficult to control due to the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/047
Inventor 刘敏王文静
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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