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Method for preparing BaTiO3 nanowire through two-step salt melting method

A technology of nanowire and molten salt method, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effects of good repeatability, simple process flow and wide application range

Inactive Publication Date: 2015-09-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no two-step molten salt method to prepare BaTiO 3 Related reports about nanowires

Method used

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  • Method for preparing BaTiO3 nanowire through two-step salt melting method
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  • Method for preparing BaTiO3 nanowire through two-step salt melting method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] 1. Raw materials: Analytical pure barium carbonate, anatase phase titanium dioxide, sodium chloride, potassium chloride.

[0033] 2. Follow the steps below to prepare BaTiO 3 Nanowires

[0034] 1). The following four raw materials: ① barium carbonate, ② titanium dioxide (anatase phase), ③ sodium chloride, ④ potassium chloride, BaCO 3 : TiO 2 : NaCl: KCl is mixed in a molar ratio of 1:2:10:10, specifically: barium carbonate is 6.3032g, titanium dioxide is 5.1020g, sodium chloride is 18.6711g, potassium chloride is 23.8131g;

[0035] 2). Manually grind the mixture in step 1) for 30 minutes;

[0036] 3) Put the powder obtained in step 2) in a corundum crucible, and keep it in a muffle furnace at 875° C. for 5 hours;

[0037] 4) After the product of step 3) was cooled with the furnace, it was washed with deionized water several times, collected by centrifugation, and washed with 0.1mol / L AgNO 3 The solution was detected until Cl could not be found - ions, dried in an ...

Embodiment 2

[0055] 1. Raw materials: Analytical pure barium carbonate, anatase phase titanium dioxide, sodium chloride, potassium chloride.

[0056] 2. Follow the steps below to prepare BaTiO 3 Nanowires

[0057] 1). The following four raw materials: ① barium carbonate, ② titanium dioxide (anatase phase), ③ sodium chloride, ④ potassium chloride, BaCO 3 : TiO 2 : NaCl: KCl is mixed in a molar ratio of 1:2:10:10, specifically: barium carbonate is 6.3032g, titanium dioxide is 5.1020g, sodium chloride is 18.6711g, potassium chloride is 23.8131g;

[0058] 2). Manually grind the mixture in step 1) for 30 minutes;

[0059] 3) Put the powder obtained in step 2) in a corundum crucible, and keep it in a muffle furnace at 875° C. for 5 hours;

[0060] 4) After the product of step 3) was cooled with the furnace, it was washed with deionized water several times, collected by centrifugation, and washed with 0.1mol / L AgNO 3 The solution was detected until Cl could not be found - ions, dried in an ...

Embodiment 3

[0067] 1. Raw materials: Analytical pure barium carbonate, anatase phase titanium dioxide, sodium chloride, potassium chloride.

[0068] 2. Follow the steps below to prepare BaTiO 3 Nanowires

[0069] 1). The following four raw materials: ① barium carbonate, ② titanium dioxide (anatase phase), ③ sodium chloride, ④ potassium chloride, BaCO 3 : TiO 2 : NaCl: KCl is mixed in a molar ratio of 1:2:10:10, specifically: barium carbonate is 6.3032g, titanium dioxide is 5.1020g, sodium chloride is 18.6711g, potassium chloride is 23.8131g;

[0070] 2). Manually grind the mixture in step 1) for 30 minutes;

[0071] 3) Put the powder obtained in step 2) in a corundum crucible, and keep it in a muffle furnace at 875° C. for 5 hours;

[0072] 4) After the product of step 3) was cooled with the furnace, it was washed with deionized water several times, collected by centrifugation, and washed with 0.1mol / L AgNO 3 The solution was detected until Cl could not be found - ions, dried in an ...

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Abstract

The invention relates to a method for preparing a BaTiO3 nanowire through a two-step salt melting method and belongs to the technical field of BaTiO3 nanowires. The two-step salt melting method is adopted, the first step salt melting process is carried out, BaCO3 and TiO2 are taken as raw materials, NaCl and KCl eutectic salt with the ratio of the NaCl and the KCl being 1:1 serves as a medium, a BaTi2O5 nanowire is obtained and serves as a template, the second step of salt melting process is carried out, and a pure-phase BaTiO3 nanowire material with the large draw ratio is synthesized. The production method is simple in process and low in energy consumption, the BaTiO3 nanowire has the large draw ratio and the even appearance. A new approach capable of massively preparing the BaTiO3 nanowire is provided.

Description

technical field [0001] The invention belongs to the field of nanomaterials and nanotechnology, in particular to a BaTiO 3 Nanowire preparation method, belonging to BaTiO 3 field of nanowire technology. Background technique [0002] In recent years, with the development of electronic information technology, dielectric materials with superior performance have become the focus of research in the field of electronic materials. BaTiO 3 It is a well-developed electronic ceramic material, and its preparation methods and corresponding product shapes are also various, and it is still widely concerned in the field of electronic materials due to its excellent electrical properties. Compared with granular materials, nanowire materials have better electrical properties due to their special size and shape effects, and the preparation methods of nanowire materials still need to be further explored. [0003] BaTiO 3 It is a perovskite structure at room temperature, connected by TiO6 oc...

Claims

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Application Information

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IPC IPC(8): C01G23/00B82Y30/00
Inventor 侯育冬付靖郑木鹏朱满康严辉
Owner BEIJING UNIV OF TECH
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