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Preparation method of tetragonal-phase barium titanate ceramic powder with antibacterial property

A technology of phase barium titanate and ceramic powder, which is applied in the field of piezoelectric ceramic materials and ferroelectricity, can solve the problems of difficult large-scale industrial production, unsatisfactory use effect, and difficulty in meeting performance requirements, so as to achieve cross-promoting, low cost, and Simple and reproducible effects

Pending Publication Date: 2021-11-30
XIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

The solid phase method is to prepare BaTiO 3 The traditional synthesis method, the BaTiO synthesized by this method 3 Although the powder has a high tetragonal phase content, the prepared powder has a large particle size, serious agglomeration, poor dispersion, unsatisfactory use effect, and is difficult to meet the performance requirements of industrial applications; liquid phase production methods mainly include hydrothermal method, sol -Gel method, chemical precipitation method, etc., have been widely used in recent years to synthesize ultrafine tetragonal barium titanate powders with high purity and uniform size in nanometer and micrometer scales. However, tetragonal BaTiO obtained by these methods 3 The output of powder is limited, it is difficult to produce on a large scale

Method used

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  • Preparation method of tetragonal-phase barium titanate ceramic powder with antibacterial property
  • Preparation method of tetragonal-phase barium titanate ceramic powder with antibacterial property
  • Preparation method of tetragonal-phase barium titanate ceramic powder with antibacterial property

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preparation example Construction

[0028] The present invention provides a technical solution: a method for preparing tetragonal phase barium titanate ceramic powder with antibacterial properties, such as figure 1 As shown in the process flow chart, the specific operation steps are as follows:

[0029] Step 1, prepare barium salt solution system: with BaCl 2 2H 2 O is barium source, C 6 h 8 o 7 As a reaction chelating agent, weigh an appropriate amount of BaCl 2 2H 2 O in a beaker and add an appropriate amount of deionized water, stir until completely dissolved to obtain a colorless transparent solution; another appropriate amount of C 6 h 8 o 7 Add it, stir to obtain the barium salt solution system; wherein C 6 h 8 o 7 with BaCl 2 2H 2 The molar ratio of O is 1:1, the added deionized water and BaCl 2 2H 2The mass ratio of O is 3-5:1.

[0030] Step 2, prepare titanium salt solution system: use C 16 h 36 o 4 Ti is the source of titanium, weigh an appropriate amount of C 16 h 36 o 4 Put Ti i...

Embodiment 1

[0036] Step 1, prepare barium salt solution system: with BaCl 2 2H 2 O is barium source, C 6 h 8 o 7 As a reaction chelating agent, weigh 0.05mol (12g) BaCl 2 2H 2 Add O into a beaker and add 50mL deionized water, stir until completely dissolved to obtain a colorless transparent solution; otherwise known as 0.05mol (3g) C 6 h 8 o 7 Add it and stir to obtain barium salt solution system;

[0037] Step 2, prepare titanium salt solution system: use C 16 h 36 o 4 Ti is titanium source, weigh 0.05mol (17mL) C 16 h 36 o 4 Put Ti in a beaker and add 30mL of absolute ethanol, mix thoroughly to obtain a titanium salt solution system;

[0038] Step 3, preparing an alkaline solution: Weigh 0.15mol (6.25g) NaOH powder and dissolve it in 30mL deionized water successively for 5 times, and stir evenly to obtain an alkaline solution;

[0039] Step 4, mix to get BaTiO 3 Precursor solution: mix the barium salt solution obtained in step 1 with the titanium salt solution obtained i...

Embodiment 2

[0043] Step 1, prepare barium salt solution system: with BaCl 2 2H 2 O is barium source, C 6 h 8 o 7 As a reaction chelating agent, weigh 0.05mol (12g) BaCl 2 2H 2 Add O into a beaker and add 50mL deionized water, stir until completely dissolved to obtain a colorless transparent solution; otherwise known as 0.05mol (3g) C 6 h 8 o 7 Add it and stir to obtain barium salt solution system;

[0044] Step 2, prepare titanium salt solution system: use C 16 h 36 o 4 Ti is titanium source, weigh 0.05mol (17mL) C 16 h 36 o 4 Put Ti in a beaker and add 30mL of absolute ethanol, mix thoroughly to obtain a titanium salt solution system;

[0045] Step 3, prepare alkaline solution: weigh 0.3mol (12.50g) NaOH powder and dissolve in 50mL deionized water successively for 10 times, stir evenly to obtain alkaline solution;

[0046] Step 4, mix to get BaTiO 3 Precursor solution: mix the barium salt solution obtained in step 1 with the titanium salt solution obtained in step 2, stir...

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Abstract

The invention discloses a preparation method of tetragonal-phase barium titanate ceramic powder with antibacterial performance, and belongs to the technical field of ferroelectric and piezoelectric ceramic materials. The method comprises the steps: completing atomic-scale mixing of a barium source and a titanium source in a liquid-phase state by means of a liquid-phase chemical process; then, fixing the mixture in the form of a liquid precursor through a rotary evaporation reaction; and finally, carrying out a certain heat treatment process on the washed and dried precursor, thereby controllably synthesizing the tetragonal-phase barium titanate ceramic powder with good antibacterial performance. In the synthesis process, common inorganic salts and simple reagents are mainly used, so that the method is low in cost, simple and easy to implement and good in repeatability. The synthesized tetragonal-phase barium titanate ceramic powder is stable in component, narrow in size and particle size distribution, high in crystal face index, good in antibacterial performance and suitable for large-scale batch production, and a certain theoretical basis is provided for antibacterial research of ferroelectric materials.

Description

technical field [0001] The invention relates to the technical field of ferroelectric and piezoelectric ceramic materials, in particular to a method for preparing tetragonal phase barium titanate ceramic powder with antibacterial properties. Background technique [0002] With the continuous development of social economy, global environmental pollution is becoming more and more serious, and pathogenic bacteria, molds and harmful microorganisms that can be seen everywhere in life affect people's health. Therefore, the use and research of antibacterial materials has become an urgent scientific research goal and an important means to maintain human health. Antibacterial material is a new type of functional material that can inhibit the growth and reproduction of bacteria and other microorganisms or inactivate bacteria. It can be obtained by adding antibacterial agents to the material or introducing antibacterial groups into the carrier material in other ways. It mainly plays a ro...

Claims

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Application Information

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IPC IPC(8): C04B35/468C04B35/626
CPCC04B35/4682C04B35/62605C04B2235/444C04B2235/48C04B2235/96
Inventor 焦华靳洁晨赵康周雪蕊白嘉瑜张鑫媛汤玉斐
Owner XIAN UNIV OF TECH
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