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Preparing method of nano band potassium titanate (K2Ti6O13)

A technology of potassium hexatitanate and ribbons, which is applied in the field of preparation of nanobelt-shaped potassium hexatitanate, which can solve the problems affecting the size uniformity of hydrothermal products, weak light absorption characteristics, and uneven diameter of potassium titanate nanowires. , to achieve the effect of improving the hydrothermal reaction efficiency, simplifying the process and realizing controllability

Active Publication Date: 2014-08-06
HEBEI UNIV OF TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of nanoribbon-shaped potassium hexatitanate, adopting a method combining sol-gel method and hydrothermal synthesis to prepare nanoribbon-shaped potassium hexatitanate, method to prepare TiO with smaller size 2 Nanopowder, on the one hand, can effectively control TiO 2 The size of the nanopowder as the precursor of the hydrothermal reaction, thus realizing the controllability of the bandwidth of the nanoribbon-shaped potassium hexatitanate synthesized by the hydrothermal method, on the other hand, the TiO prepared by the sol-gel method 2 The nanopowder can be used for hydrothermal reaction immediately, can give full play to its reactivity, and improve the efficiency of hydrothermal reaction; the nanoribbon-shaped potassium hexatitanate prepared by the method of the present invention is a kind of nanoribbon with a width of 4nm to 10nm and a length of 100nm ~50μm triple-bandgap semiconductor material, and its spectral absorption range has been extended from the ultraviolet region to the visible region, and has shown very high photocatalytic activity in both the ultraviolet region and the visible region, overcoming the existing hydrothermal In the process of preparing potassium titanate nanowires, the hydrothermal reaction rate is low, and the diameter of potassium titanate nanowires is extremely uneven, which seriously affects the size uniformity of hydrothermal products, and the prepared K 2 Ti 6 o 13 One-dimensional nanomaterials have only one bandgap width and weak light absorption properties in the visible region

Method used

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  • Preparing method of nano band potassium titanate (K2Ti6O13)
  • Preparing method of nano band potassium titanate (K2Ti6O13)
  • Preparing method of nano band potassium titanate (K2Ti6O13)

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Effect test

Embodiment 1

[0028] In the first step, TiO was prepared by sol-gel method 2 Nano powder

[0029] Using butyl titanate as the precursor, mix butyl titanate and absolute ethanol at a ratio of 1:1 to form a uniform solution, prepare solution A, add 2% nitric acid and 5% sodium polyacrylate solution in distilled water for magnetic stirring, The volume ratio of distilled water: 2% nitric acid: 5% sodium polyacrylate is 75:2.5:1, and it is prepared into solution B, and then the required amount of solution A is added into solution B, and the volume ratio of solution A to solution B is 1: 5. Hydrolyze at room temperature, stir for 2 hours and then filter and dry the resulting white precipitate to obtain anatase phase white TiO 2 Nanopowder, the particle size of which is between 4nm and 10nm, and the above percentages are mass percent concentrations;

[0030] In the second step, the nanoribbon-like K 2 Ti 6 o 13 One-dimensional nanomaterials

[0031] Take 1g of TiO produced in the first step ...

Embodiment 2

[0035] In the first step, TiO was prepared by sol-gel method 2 Nano powder

[0036] Using butyl titanate as the precursor, mix butyl titanate and absolute ethanol at a ratio of 1:1 to form a uniform solution, prepare solution A, add 2% nitric acid and 5% sodium polyacrylate solution in distilled water for magnetic stirring, The volume ratio of distilled water: 2% nitric acid: 5% sodium polyacrylate is 75:2.5:1, and it is prepared into solution B, and then the required amount of solution A is added into solution B, and the volume ratio of solution A to solution B is 1: 5. Hydrolyze at room temperature, stir for 2 hours and then filter and dry the resulting white precipitate to obtain anatase phase white TiO 2 Nanopowder, the particle size of which is between 4nm and 10nm, and the above percentages are mass percent concentrations;

[0037] In the second step, the nanoribbon-like K 2 Ti 6 o 13 One-dimensional nanomaterials

[0038] Get 2.25g of the TiO produced in the first...

Embodiment 3

[0042] In the first step, TiO was prepared by sol-gel method 2 Nano powder

[0043] Using butyl titanate as the precursor, mix butyl titanate and absolute ethanol at a ratio of 1:1 to form a uniform solution, prepare solution A, add 2% nitric acid and 5% sodium polyacrylate solution in distilled water for magnetic stirring, The volume ratio of distilled water: 2% nitric acid: 5% sodium polyacrylate is 75:2.5:1, and it is prepared into solution B, and then the required amount of solution A is added into solution B, and the volume ratio of solution A to solution B is 1: 5. Hydrolyze at room temperature, stir for 2 hours and then filter and dry the resulting white precipitate to obtain anatase phase white TiO 2 Nanopowder, the particle size of which is between 4nm and 10nm, and the above percentages are mass percent concentrations;

[0044] In the second step, the nanoribbon-like K 2 Ti 6 o 13 One-dimensional nanomaterials

[0045] Take 5g of TiO produced in the first step ...

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Abstract

The invention provides a preparing method of a nano band potassium titanate (K2Ti6O13), and relates to a titanium compound. The preparing method comprises the following steps of adopting a sol-gel method to prepare a TiO2 (titanium dioxide) nano powder; carrying out hydro-thermal reaction to prepare a nano band K2Ti6O13 one-dimensional nano material; and finally, cleaning and drying, so as to obtain the nano band K2Ti6O13 product, wherein the nano band K2Ti6O13 product is the nano band K2Ti6O13 one-dimensional nano material, the width of a nano band is 4nm to 10nm, and the length of the nano band is 100nm to 50mu.m. The nano band K2Ti6O13 product is a three-band gap semiconductor material with three band gap widths of 4.925eV, 3.05eV and 2.173eV, and the spectrum absorbing range is expanded from an ultraviolet light area to a visible light area. The method has the advantages that the defects of the prior art that the K2Ti6O13 one-dimensional nano material only has one band gap width and the light absorbing property of the visible light area is weak are overcome; and the pollution is avoided, the cost is low, the procedure is simple, and the controllability is high.

Description

technical field [0001] The technical scheme of the present invention relates to a titanium compound, specifically a preparation method of nanoribbon-shaped potassium hexatitanate. Background technique [0002] The unique optical, electrical, magnetic, mechanical and catalytic physical properties of one-dimensional nanomaterials have attracted the attention of more and more scientific researchers. The preparation of one-dimensional nanomaterials plays an important role in the research field of nanomaterials. Through the research and preparation of low-dimensional nanomaterials, it will help to understand the nucleation and growth process of crystals at the atomic and molecular levels, and lay a material foundation for the research and development of nanodevices, nanomedicine carriers, nanobiological materials and environmentally friendly materials. [0003] Potassium titanate is an inorganic material with excellent physical and chemical properties, among which potassium tetr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00B82Y30/00
Inventor 戚玉敏崔春翔刘双进肖建国刘慧何云耿月娇马柏慧王晶
Owner HEBEI UNIV OF TECH
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