Cu2O ultra-fine nano-particles and self-assembly nanospheres as well as preparation method thereof

A technology of ultra-fine nano and nano microspheres, which is applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of environmental hazards, inability to prepare, and inability to solve the problem of agglomeration, etc., and achieve the effect of simple process

Inactive Publication Date: 2010-08-18
XIAMEN UNIV
View PDF3 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Publication number is that the invention patent application of CN1693204 provides a kind of Cu 2 The disadvantage of the preparation method of O nanoparticles is that the solvent used in the preparation is water, which cannot solve the problem of agglomeration caused by the too strong polarity of water, so that ultrafine Cu cannot be prepared. 2 O nanoparticles; in addition, the reducing agent used in this method is hydrazine hydrate, because hydrazine hydrate has extremely strong reducibility, has strong toxicity to organisms, so using hydrazine hydrate as a raw material not only poses a threat to the health of oper...

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
  • Cu2O ultra-fine nano-particles and self-assembly nanospheres as well as preparation method thereof
  • Cu2O ultra-fine nano-particles and self-assembly nanospheres as well as preparation method thereof
  • Cu2O ultra-fine nano-particles and self-assembly nanospheres as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: 0.175g of PVP was dispersed in 8mL of ethylene glycol in which NaOH was dissolved (the pH of the ethylene glycol solution was 12.7) to prepare a PVP solution. Dissolve 1.5 g of ascorbic acid in 12 mL of ethylene glycol in which NaOH is dissolved (the pH value of this NaOH / ethylene glycol solution is also 12.7) to prepare an ascorbic acid solution. Add 16mL of ethylene glycol, 0.4g of copper chloride dihydrate, and 1.5mL of oleic acid to the container in turn, and stir vigorously for 40min. Then add the PVP solution prepared above into this container, slowly raise the temperature of the mixed liquid in the container to 70°C, keep it warm for 30min, and wait until the mixed liquid in the container is divided into two phases (see figure 1 ). Pour the previously prepared ascorbic acid solution into the container at one time. Raise the temperature to 80°C and keep it warm for 30 minutes, the reactant in the container gradually turns green. Add 10 mL of ethanol ...

Embodiment 2

[0042] Example 2: 0.175g of PVP was dispersed in 8mL of ethylene glycol in which a certain amount of NaOH was dissolved (the pH of the ethylene glycol solution was 12.7) to prepare a PVP solution. Dissolve 1.5 g of ascorbic acid in 12 mL of ethylene glycol in which NaOH is dissolved (the pH value of this NaOH / ethylene glycol solution is also 12.7) to prepare an ascorbic acid solution. Add 16mL of ethylene glycol, 0.4g of copper chloride dihydrate, and 1.5mL of oleic acid to the container in turn, and stir vigorously for 40min. Then add the PVP solution prepared above into this container, slowly raise the temperature of the mixed liquid in the container to 70°C, keep it warm for 30min, and wait until the mixed liquid in the container is divided into two phases (see figure 1 ). Pour the previously prepared ascorbic acid solution into the container at one time. Raise the temperature to 80°C and keep it warm for 30min. The reactant in the container gradually turns green. Continu...

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 Cu2O ultra-fine nano-particles and self-assembly nanospheres as well as a preparation method thereof, relating to the preparation method of the nano-particles. A whole reaction mixed liquid is divided into two phases through regulating the proportion of each substance in a reaction system, wherein one phase contains metal salt while the other phase contains a reducing agent. The metal salt is released to the phase containing the reducing agent, and contacted with the reducing agent at a part close to the interface of two phases to carry out reduction reaction, and the release action and a protecting agent in the reaction system commonly act in the whole reaction system so as to achieve the aim of controlling the appearances and the sizes of the product Cu2O ultra-fine nano-particles. The Cu2O ultra-fine nano-particles can be prepared by using the release method; if the reaction mixed liquid containing the Cu2O ultra-fine nano-particles continuously keeps the temperature for certain time at certain temperature, Cu2O self-assembly nanospheres with larger particle sizes formed by self-assembling the Cu2O ultra-fine nano-particles are prepared due to the Ostwald maturating action.

Description

technical field [0001] The invention relates to a preparation method of nanoparticles, in particular to a method of controlling the addition rate of main reaction drugs by a slow release method and then preparing ultrafine Cu 2 O nanoparticles and their method of self-assembling nanospheres. Background technique [0002] Nanoparticles cause the small size effect due to their small size (from one nanometer to several hundred nanometers). This effect causes a qualitative change in the properties of nanoparticles compared with bulk materials, leading to a series of peculiar physical phenomena, which also makes nanoparticles have the potential to be used in new fields. Cu 2 O nanoparticles, especially ultrafine Cu 2 O nanoparticles (particle size below 10nm), as a P-type semiconductor, have broad application prospects in the fields of magnetic devices, solar energy conversion, catalysts, electrode materials, etc. (1. Maji T.K., Matasuda R., Kitagawa S, Nat .Mater.2007, 6, 14...

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
IPC IPC(8): C01G3/02B82B3/00
Inventor 王翠萍吴建林刘兴军黄艺雄张锦彬马云庆施展
Owner XIAMEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap