Synthesis method of barium titanate nano-needles

A synthesis method and nanoneedle technology, applied in nanotechnology, titanium compounds, nanotechnology, etc., can solve the problems of reported, unexisted barium titanate nanoneedles, difficulty in synthesis, etc., and achieve difficult agglomeration, controllable shape, and low cost Effect

Inactive Publication Date: 2014-05-07
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there have been no reports on barium titanate nanoneedles
Compared with barium titanate nanorods and nanowires with uniform size, this special shape of barium titanate nanoneedles is difficult to synthesize

Method used

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  • Synthesis method of barium titanate nano-needles
  • Synthesis method of barium titanate nano-needles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: After uniformly mixing barium acetate, tetrabutyl titanate and water, put them into a reaction vessel and seal them, wherein the molar ratio of barium acetate to tetrabutyl titanate is 1:1, barium acetate, tetrabutyl titanate The ester accounts for 10% of the weight of the water solvent, and the amount of barium acetate, tetrabutyl titanate and water accounts for 50% of the filling degree of the container. At a temperature of 180° C. for 24 hours, a flocculent white product of barium titanate nanoneedles was finally obtained.

Embodiment 2

[0019] Example 2: After uniformly mixing barium acetate, tetrabutyl titanate and water, put them into a reaction vessel and seal them, wherein the molar ratio of barium acetate to tetrabutyl titanate is 1:1, barium acetate, tetrabutyl titanate The ester accounts for 8% by weight of the water solvent, and the amount of barium acetate, tetrabutyl titanate and water accounts for 40% of the filling degree of the container. At a temperature of 180° C. for 12 hours, a flocculent white product of barium titanate nanoneedles was finally obtained.

Embodiment 3

[0020] Example 3: After uniformly mixing barium acetate, tetrabutyl titanate and water, put them into a reaction vessel and seal them, wherein the molar ratio of barium acetate to tetrabutyl titanate is 1:1, barium acetate, tetrabutyl titanate The ester accounts for 6% of the weight of the water solvent, and the amount of barium acetate, tetrabutyl titanate and water accounts for 50% of the filling degree of the container. At a temperature of 180° C. for 6 hours, a flocculent white product of barium titanate nanoneedles was finally obtained.

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Abstract

The invention discloses a synthesis method of barium titanate nano-needles, belonging to the technical field of preparation of nano-materials. The synthesis method comprises the following steps: taking barium acetate and tetrabutyl titanate as raw materials, and taking water as a solvent, wherein the molar ratio of barium acetate to tetrabutyl titanate is 1: 1; uniformly mixing barium acetate, tetrabutyl titanate and water, then placing into a reaction container, sealing, and performing heat preservation at the temperature of 120-180 DEG C for 0.5-24h, wherein the amount of barium acetate and tetrabutyl titanate is not more than 10% of the weight of water, and the amount of barium acetate, tetrabutyl titanate and water is not more than 50% of the filling degree of the container; finally obtaining a barium titanate nano-needle-like white flocculent product. The barium titanate nano-needles synthesized by the synthesis method disclosed by the invention have excellent ferroelectric, dielectric and thermoelectric properties, and can be applied to capacitors, transducers, semiconductor ceramics, ferroelectric and piezoelectric devices and other fields.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for synthesizing barium titanate nanoneedles. Background technique [0002] Barium titanate has good ferroelectric, dielectric and pyroelectric properties, and has good application prospects in capacitors, transducers, semiconductor ceramics, piezoelectric ceramics, and ferroelectric devices. Granular barium titanate powder can be prepared by solid phase reaction method, chemical co-precipitation method, sol-gel method and spray pyrolysis method. The size and shape of the material play an important role in its physical and chemical properties, especially when the size of the material reaches the nanoscale, due to the small size effect, surface effect, and quantum size effect of the nanomaterial, the performance of the nanomaterial is significantly better than that of the corresponding Properties of bulk materials. Therefore, the synthesis o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/00B82Y30/00B82Y40/00
Inventor 裴立宅
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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