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Method for preparation of composite material by embedding nanoparticles into perovskite nanowire

A technology of nanoparticles, composite materials, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc.

Inactive Publication Date: 2016-11-02
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can realize the embedding of nanoparticles into perovskite nanowires to form an integrated nanocomposite material, overcome the material phase separation problem easily caused by physical mixing, and ensure the long-term performance stability of the composite material. At the same time, the method has reaction conditions Mild, easy to operate, easy to prepare in large quantities

Method used

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  • Method for preparation of composite material by embedding nanoparticles into perovskite nanowire
  • Method for preparation of composite material by embedding nanoparticles into perovskite nanowire
  • Method for preparation of composite material by embedding nanoparticles into perovskite nanowire

Examples

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Embodiment 1

[0016] Accurately weigh 50mg polyethylene glycol and dissolve it in 15mL chloroform, then add 30mL chloroform solution dispersed with 5mg of 23nm nanoparticles in this solution, stir at room temperature for 24h; add cyclohexane and centrifuge to obtain the surface of polyethylene glycol For modified nanoparticles, disperse the nanoparticles in 20 mL of deionized water with 12 mg (0.1 mmol) of cysteine ​​molecules dissolved, and then add 1 mL of 0.1 M lead acetate trihydrate deionized water solution to this solution. The reaction system Produce a large number of nano-particles embedded in organic / inorganic hybrid perovskite precursor nanowires, centrifuge to obtain a white solid, and then disperse the product in 10 mL of isopropanol solution. Finally, take 1 mL of isopropanol dispersion of precursor nanowires, and quickly add 30 mL of isopropanol solution with 0.5 g of iodomethylamine and 50 uL of hydroiodic acid under vigorous stirring, react at room temperature for 2 hours, and...

Embodiment 2

[0018] Accurately weigh 50mg of polyvinylpyrrolidone and dissolve it in 15mL of chloroform, then add 30mL of chloroform solution dispersed with 5mg of 2 nanometer nanoparticles in this solution, stir at room temperature for 24h; add cyclohexane and centrifuge to obtain polyvinylpyrrolidone surface-modified Nanoparticles, disperse the nanoparticles in 20mL of deionized water with 6mg (0.05mmol) of cysteine ​​molecules dissolved, and then add 10mL of 0.1M lead chloride deionized water solution to this solution, the reaction system produces a lot of The organic / inorganic hybrid perovskite precursor nanowires embedded with nanoparticles were centrifuged to obtain a white solid, and then the product was dispersed in 10 mL of isopropanol solution. Finally, take 1 mL of isopropanol dispersion of precursor nanowires, and quickly add 30 mL of isopropanol solution with 0.5 g of iodomethylamine and 50 uL of hydrobromic acid under vigorous stirring, react at room temperature for 2 hours, an...

Embodiment 3

[0020] Accurately weigh 50mg of polyethyleneimine and dissolve it in 15mL of chloroform, then add 30mL of chloroform solution dispersed with 5mg of 23nm nanoparticles in this solution, stir at room temperature for 24h; add cyclohexane and centrifuge to obtain the surface of polyethyleneimine The modified nanoparticles were dispersed in 20 mL of deionized water with 12 mg (0.1 mmol) of cysteine ​​molecules dissolved, and then 1 mL of 0.1 M lead nitrate deionized water solution was added to the solution, and the reaction system produced The organic / inorganic hybrid perovskite precursor nanowire embedded with a large number of nanoparticles was centrifuged to obtain a white solid, and then the product was dispersed in 10 mL of isopropanol solution. Finally, take 1 mL of isopropanol dispersion of precursor nanowires, and quickly add 30 mL of isopropanol solution with 0.5 g of iodomethylamine and 50 uL of hydroiodic acid under vigorous stirring, react at room temperature for 2 hours,...

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Abstract

The invention discloses a method for preparation of a composite material by embedding nanoparticles into a perovskite nanowire. The specific method includes: firstly, preparing nanoparticles with regular shape and uniform size; then dispersing the pretreated nanoparticles uniformly into an aqueous solution of cysteine, adding an inorganic salt of lead into the solution to prepare a nanoparticle embedded perovskite precursor nanowire; at room temperature, adding a mixed solution of haloid acid and halogen methanamine salt into the precursor nanowire so as to form an organic / inorganic hybrid material finally. The method has the advantages of artful design, mild reaction conditions, simple operation, high yield and easy mass preparation, and has broad application prospects in preparation of novel hybrid nanomaterials based on perovskite.

Description

Technical field [0001] The invention belongs to the technical field of material chemistry, and specifically relates to a preparation method of nano particles embedded perovskite nanowires. Background technique [0002] In recent years, organic / inorganic hybrid perovskite materials have aroused the research enthusiasm of researchers. Recently, researchers have become very interested in the preparation of perovskite-based nanocomposites. This is due to the composition of nanocomposites. Unique properties that the single nanomaterial does not have. [0003] In the research field of synthesizing perovskite-based nanocomposite materials, it is not easy to use the "one-pot method" to synthesize due to the large difference between the preparation conditions of perovskite materials and the synthesis conditions of most nanoparticles. Then it is realized through a simple physical mixing method. The composite material prepared by this method is easy to separate two-phase materials with time,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G23/047C01P2004/64C01P2004/04C01P2004/16
Inventor 黄岭杨冰筱王修文谢娟谢小吉黄维
Owner NANJING UNIV OF TECH
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