Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method for monodisperse bismuth nano-particles with controllable particle sizes

A monodisperse, bismuth nanotechnology, applied in nanotechnology and other directions, to achieve the effects of simple operation, controllable reaction conditions and uniform particle size

Inactive Publication Date: 2014-10-01
YANGZHOU UNIV
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve large-scale industrial production of monodisperse nanocrystals, more simple, economical, rapid and macro-scale preparation methods still need to be further developed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method for monodisperse bismuth nano-particles with controllable particle sizes
  • Preparation method for monodisperse bismuth nano-particles with controllable particle sizes
  • Preparation method for monodisperse bismuth nano-particles with controllable particle sizes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Preparation of tetrahydrofuran solution of bis(trimethylsilyl)aminobismuth:

[0020] At 0°C (such as in an ice-water bath), 2.15 g of lithium bis(trimethylsilyl)amide (Li[N(SiMe 3 ) 2 ]) was dissolved in 20 mL of diethyl ether solution to form a diethyl ether solution of lithium bis(trimethylsilyl)amide.

[0021] Dissolve 1.35 g of bismuth trichloride in a mixed solution of 20 mL of diethyl ether and 5 mL of tetrahydrofuran, and slowly add it dropwise to the diethyl ether solution of lithium bis(trimethylsilyl)amide, and magnetically stir for reaction 1 Hour.

[0022] After the reaction was completed, the reaction solution was filtered, and the yellow-green filtrate was rotary evaporated. Then, 10 mL of pentane was added to dissolve, and after filtration, the rotary evaporation was performed again to obtain a yellow powder, bis(trimethylsilyl)aminobismuth, which was dispersed into tetrahydrofuran to form a tetrahydrofuran solution of bis(trimethylsilyl)aminobismut...

Embodiment 2

[0030] 1. Preparation of tetrahydrofuran solution of bis(trimethylsilyl)aminobismuth:

[0031] At 0°C (such as in an ice-water bath), 2.15 g of lithium bis(trimethylsilyl)amide (Li[N(SiMe 3 ) 2 ]) was dissolved in 20 mL of diethyl ether solution to form a diethyl ether solution of lithium bis(trimethylsilyl)amide.

[0032] Dissolve 1.35 g of bismuth trichloride in a mixed solution of 20 mL of diethyl ether and 5 mL of tetrahydrofuran, and slowly add it dropwise to the diethyl ether solution of lithium bis(trimethylsilyl)amide, and magnetically stir for reaction 1 Hour.

[0033] After the reaction was completed, the reaction solution was filtered, and the yellow-green filtrate was rotary evaporated. Then, 10 mL of pentane was added to dissolve, and after filtration, the rotary evaporation was performed again to obtain a yellow powder, bis(trimethylsilyl)aminobismuth, which was dispersed into tetrahydrofuran to form a tetrahydrofuran solution of bis(trimethylsilyl)aminobism...

Embodiment 3

[0041] 1. Preparation of tetrahydrofuran solution of bis(trimethylsilyl)aminobismuth:

[0042] At 0°C (such as in an ice-water bath), 2.15 g of lithium bis(trimethylsilyl)amide (Li[N(SiMe 3 ) 2 ]) was dissolved in 20 mL of diethyl ether solution to form a diethyl ether solution of lithium bis(trimethylsilyl)amide.

[0043] Dissolve 1.35 g of bismuth trichloride in a mixed solution of 20 mL of diethyl ether and 5 mL of tetrahydrofuran, and slowly add it dropwise to the diethyl ether solution of lithium bis(trimethylsilyl)amide, and magnetically stir for reaction 1 Hour.

[0044] After the reaction was completed, the reaction solution was filtered, and the yellow-green filtrate was rotary evaporated. Then, 10 mL of pentane was added to dissolve, and after filtration, the rotary evaporation was performed again to obtain a yellow powder, bis(trimethylsilyl)aminobismuth, which was dispersed into tetrahydrofuran to form a tetrahydrofuran solution of bis(trimethylsilyl)aminobismut...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method for monodisperse bismuth nano-particles with controllable particle sizes, which belongs to the technical field of nano-material synthesis. According to the preparation method disclosed by the invention, bis(trimethylsilyl) aminobismuth (Bi[N(SiMe3)2]3) is taken as a bismuth source, polyvinylpyrrolidone-hexadecane segmented copolymer (GanexV-216) is used as a protector, and diphenyl ether is taken as a solvent; the centrifuged product is dispersed in methylbenzene to keep the good dispersibility thereof. According to the preparation method disclosed by the invention, the monodisperse bismuth nano-particles with the controllable particle sizes are prepared by a simple solvent hot process. The method disclosed by the invention is simple and convenient to operate, and controllable in reaction conditions; the obtained bismuth nano-particles are good in dispersibility and uniform in particle sizes, thus providing great bismuth nano-catalyst seed crystals for the subsequent applications.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to a preparation method of monodisperse bismuth nanoparticles with controllable particle diameters. Background technique [0002] Monodisperse nanocrystals refer to nanomaterials with uniform size and shape and good dispersibility in specific media. They are also ideal building blocks for assembling nanostructured materials with functional properties. Therefore, the synthesis of monodisperse nanocrystals is of great significance. Since Bawendi's research group successfully prepared CdS / CdSe monodisperse semiconductor quantum dots in 1993, a series of important progress has been made in the synthesis of monodisperse nanocrystals. At present, all kinds of monodisperse nanocrystals can basically be obtained through certain preparation methods. However, in order to realize the large-scale industrial production of monodisperse nanocrystals, more simple, econo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 陈铭沈枭杜江
Owner YANGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com