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Barium titanate nano array and preparation method thereof

A nano-array and barium titanate technology, applied in the field of materials, can solve the problems that are not suitable for the increasingly miniaturized characteristics of electronic devices, and achieve the effect of improving the photoelectric response

Pending Publication Date: 2022-04-12
HAINAN UNICAN SCI & TECH INNOVATION INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since BTO materials are often prepared and characterized by macroscopic bulk in the laboratory and industry, they are no longer suitable for the increasingly miniaturized characteristics of electronic devices, and because nanostructures have many physical and chemical characteristics unique to macroscopic structures.

Method used

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  • Barium titanate nano array and preparation method thereof
  • Barium titanate nano array and preparation method thereof
  • Barium titanate nano array and preparation method thereof

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preparation example Construction

[0026] The invention provides a method for preparing a barium titanate nanoarray, comprising:

[0027] A) Titanium dioxide foil and sodium hydroxide are subjected to hydrothermal reaction to obtain an intermediate product;

[0028] B) Mix the intermediate product with barium hydroxide and react to obtain barium titanate nano-arrays.

[0029] The preparation method of the barium titanate nano-array provided by the present invention first prepares the titanium dioxide foil.

[0030] The preparation method of the titanium dioxide foil of the present invention is specifically: the titanium foil is ultrasonically cleaned with absolute ethanol, acetone and deionized water in sequence, and then reacted to obtain the titanium dioxide foil.

[0031] Firstly, a titanium foil with a size of 1.5-2.0cm*3.0-3.5cm is selected.

[0032] Then use anhydrous ethanol, acetone and deionized water in order to clean them in ultrasonic for 10-20 minutes respectively to obtain a clean foil.

[0033...

Embodiment 1

[0053]Put the titanium dioxide foil into the inner lining of polytetrafluoroethylene, add 12mol / L sodium hydroxide solution, put it into the reaction kettle for packaging, put the reaction kettle into the drying oven, and react at 210°C for 4 to 12 hours respectively , to obtain products under different concentrations of sodium hydroxide and different reaction times, and use ultrasonic to clean the obtained samples with deionized water and absolute ethanol, and then perform the second step of hydrothermal. Put the sample into the inner liner of polytetrafluoroethylene, add saturated barium hydroxide solution, put it into the reaction kettle and seal it, then put the reaction kettle into the drying oven, react at 210 ° C for 12 hours, and the obtained sample is deionized Ultrasonic cleaning with water and absolute ethanol can grow barium titanate nano-arrays on the titanium dioxide base.

[0054] The result is as Image 6 as shown, Image 6 It is a graph showing the photoelec...

Embodiment 2

[0058] Put the titanium dioxide foil into the inner lining of polytetrafluoroethylene, add 11mol / L sodium hydroxide solution, put it into the reaction kettle for packaging, put the reaction kettle into the drying oven, and react at 210°C for 4 to 12 hours respectively , to obtain products under different concentrations of sodium hydroxide and different reaction times, and use ultrasonic to clean the obtained samples with deionized water and absolute ethanol, and then perform the second step of hydrothermal. Put the sample into the lining of polytetrafluoroethylene, add saturated barium chloride solution, put it into the reaction kettle and seal it, then put the reaction kettle into the drying oven, react at 200°C for 14h, and the obtained sample is deionized Ultrasonic cleaning with water and absolute ethanol can grow barium titanate nano-arrays on the titanium dioxide base.

[0059] The result is as Figure 5 as shown, Figure 5 It is a photoelectric performance result grap...

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Abstract

The invention provides a preparation method of a barium titanate nano array, which comprises the following steps: A) carrying out hydrothermal reaction on titanium dioxide foil and sodium hydroxide to obtain an intermediate product; and B) mixing the intermediate product with barium hydroxide, and reacting to obtain the barium titanate nano array. According to the invention, the barium titanate nano array is grown on the titanium dioxide substrate, so that the photoelectric response is improved by more than 4 times compared with that of the traditional barium titanate material.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a barium titanate nano-array and a preparation method thereof. Background technique [0002] The photocatalytic effect was first discovered by Professor Akira Fujishima of the University of Tokyo. In 1972, Akira Fujishima, a graduate student, irradiated a single crystal of titanium oxide placed in water with light, and found that water was decomposed into hydrogen and oxygen at room temperature. This phenomenon is accomplished with the help of the power of light, so the photocatalytic effect is also called a photocatalyst. Because of its low cost and high stability, perovskite materials are a type of light often studied by technicians; barium titanate is one of them, with a face-centered cubic lattice, composed of oxygen ions and Ca2+ ions with a larger radius (A-site ions) together form the cubic closest packing s, and Ti with a smaller radius 2+ The ions are located in the ...

Claims

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Application Information

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IPC IPC(8): B01J23/02B01J21/06C01G23/00
Inventor 朱世恩林正玺符坚符智豪黄修彩
Owner HAINAN UNICAN SCI & TECH INNOVATION INST CO LTD
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