Monodisperse Cu2O single crystal solid sphere with controllable particle size and preparation method thereof

A monodisperse, solid sphere technology, applied in the direction of copper oxide/copper hydroxide, nanotechnology, etc., can solve problems that have not been reported before, and achieve the effect of expanding the application range and precisely controlling the particle size

Active Publication Date: 2019-06-07
DALIAN UNIV OF TECH
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At room temperature, the precursor copper hydroxide is reduced by ascorbic acid to obtain polyhedral-like single crystal cuprous oxide microspheres (see S.R.Zhang, R.B. Jiang, Y.M.Xie, Q.F.Ruan, B.C.Yang, J.F.Wang, H.Q.Lin, Adv Mater., 2015 , 27, 7432-7439. and Y.K.Bai,; T.F.Yang, Q.Gu, G.h

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
  • Monodisperse Cu2O single crystal solid sphere with controllable particle size and preparation method thereof
  • Monodisperse Cu2O single crystal solid sphere with controllable particle size and preparation method thereof
  • Monodisperse Cu2O single crystal solid sphere with controllable particle size and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] The copper source 13.4mM, the small molecule ligand 26.8mM sodium citrate dihydrate, and polyvinylpyrrolidone (molecular weight Mw=30000) 2.3mM were added to the mixed solvent of water and polyol (ethylene glycol) (ethylene glycol and water). The mass ratio is 3:10), add 20mL of NaOH solution with a concentration of 0.5M to the mixed solution; at a temperature of 20℃; add 7mL of 0.12M ascorbic acid to the above mixed solution, react for 20min, add to the mixed solution Add 8 mL of ascorbic acid to the mixture, react for 1 hour, centrifuge to separate the precipitate, and dry the product under vacuum at 60 ℃ to obtain uniform solid microspheres of single crystal cuprous oxide with a particle size of 170 nm, such as figure 1 Shown. Use 170nm monodisperse cuprous oxide single crystal solid spheres as the building unit to construct an amorphous structure, and conduct reflectance spectrum test and structural color photos as shown in Figure 5 As shown, the r...

Example Embodiment

[0028] Example 2

[0029] The copper source 13.4mM, small molecule ligand 16.2mM disodium ethylenediaminetetraacetate), polyvinylpyrrolidone (molecular weight Mw = 40000) 2.3mM were added to the mixed solvent of water and glycerol (glycerol and water The mass ratio is 2:5), add 20mL of NaOH solution to the mixed solution with a concentration of 0.5M; at a temperature of 60℃; under vigorous stirring, add 7mL of 0.12M glucose dropwise to the above mixed solution to react After 10 minutes, add 8 mL of glucose to the mixed solution, react for 1 hour, centrifuge to separate the precipitate, and dry the product under vacuum at 60°C to obtain monodisperse single crystal cuprous oxide solid microspheres with a uniform particle size of 200 nm ,Such as figure 2 Shown.

Example Embodiment

[0030] Example 3

[0031] The copper source 13.4mM, the small molecule ligand 18.7mM pentasodium diethylenetriaminepentaacetate (, polyvinylpyrrolidone (molecular weight Mw=10000) 2.3mM were added to the mixed solvent of water and neopentyl glycol glycol (new The mass ratio of pentanediol to water is 7:10), 20mL of NaOH solution with a concentration of 0.5M is added dropwise to the mixed solution; the temperature is 80℃; 7mL of 0.12M is added dropwise to the above mixed solution Glucose, after reacting for 10 minutes, add 8 mL of glucose to the mixed solution, react for 1 hour, centrifuge to separate the precipitate, and dry the product under vacuum at 60°C to obtain a monodisperse solid single crystal cuprous oxide with a particle size of 270nm Microspheres, such as image 3 Shown.

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a monodisperse Cu2O single crystal solid sphere with a controllable particle size and a preparation method thereof. A micromolecule ligand at least comprises two carboxyl groups, and a high-molecular ligand is polyvinylpyrrolidone. The specific process comprises the following steps: preparing a copper source, the high-molecular ligand, the micromolecule ligand and a mixed solution of water and polyhydric alcohol, then dropwise adding a certain amount of an alkali solution into the solution, adding a reducing agent step by step at 20-80 DEG C, and carrying out centrifuging to obtain the monodisperse Cu2O single crystal solid sphere. According to the monodisperse Cu2O single crystal solid sphere with controllable particle size and the preparation method thereof, operation is simple and cost is low, and the monodisperse Cu2O single crystal solid sphere with a particle size of 40-600 nm can be obtained only by adjusting the amount and variety of the micromolecule ligand. The microsphere provided by the invention can be widely applied to the fields of photonic crystals, electrodes of lithium-sulfur batteries, and catalytic photolysis of water.

Description

technical field [0001] The invention relates to a monodisperse Cu with adjustable particle size 2 O single crystal solid sphere and preparation method thereof, belonging to Cu 2 The technical field of preparation of O single crystal microspheres. Background technique [0002] Cuprous oxide is a P-type semiconductor material with a theoretical refractive index of 2.7, which has been widely used in photolysis of water, catalysts, lithium-sulfur battery electrodes, and photonic crystals. Usually the building blocks of photonic crystals are low refractive index such as PS, SiO 2 etc. will lead to weaker photonic bandgap and pale structural color, in recent years with high refractive index microspheres such as TiO 2 , ZnS, CdS, etc., as the building blocks of photonic crystals, make them have low-angle correlation and high-brightness structural colors and other excellent properties, which have attracted extensive attention of researchers at home and abroad. However, most of t...

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): C01G3/02B82Y40/00
Inventor 武素丽毕佳捷常杰
Owner DALIAN UNIV OF TECH
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