Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method for CuS/TiO2 core/shell structure nanometer powder

A technology of shell structure and nanopowder, which is applied in the synthesis field of CuS/TiO2 core/shell structure composite nanopowder, to achieve the effect of accelerating preparation efficiency and reducing equipment requirements

Inactive Publication Date: 2015-06-03
BEIJING UNIV OF TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of CuS / TiO by chemical method 2 Core / shell structure nanopowders have not been reported yet

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 CuS/TiO2 core/shell structure nanometer powder
  • Preparation method for CuS/TiO2 core/shell structure nanometer powder
  • Preparation method for CuS/TiO2 core/shell structure nanometer powder

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040] Variation of core CuS size with reaction time

[0041] By controlling the reaction time within 20min~60min, the size of the core CuS can be changed to a certain extent. The experiment was divided into 4 groups, and the reaction time was 20min, 40min, 60min respectively. The only remaining variable reaction conditions are CuCl 2 The concentration of aqueous solution is 20mmol / L, TiCl 4 The concentration of the ethanol solution is 5% by volume, and the centrifugation speed is 11000r / min. The prepared powder can be observed under a scanning electron microscope with a magnification of 200,000 times, and the size of the core CuS gradually increases between about 10nm and 100nm.

example 2

[0043] TiO 2 Coating layer with TiCl 4 Changes in concentration of ethanol solution

[0044] By controlling TiCl 4 The concentration of ethanol solution changes within 3% to 15% by volume, and the coated TiO 2 The thickness of the layers varies to some extent. The experiments were divided into 4 groups, TiCl 4 The concentration of the ethanol solution is 3%, 5%, 10%, and 15% by volume respectively. The only remaining variable reaction conditions are CuCl 2The concentration of the aqueous solution is 20mmol / L, the core reaction time is 30min, and the centrifugal speed is 11000r / min. The prepared powder can be observed under a scanning electron microscope with a magnification of 200,000 times, and the size of the core CuS gradually increases between about 10nm and 100nm.

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
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method for CuS / TiO2 core / shell structure nanometer powder. The preparation method is characterized by performing core / shell coating structure composition on Cus and TiO2 which have the performances of good catalytic activity, good visible light absorption, good photoluminescence, good third-order nonlinear susceptibility and good response speed. Firstly, CuCl2.5H2O and CH3CSNH2 are prepared into CuS nanocrystalline in a water solution of 60 DEG C, and then TiO2 generated by reaction of TiCl4 and H2O is used for coating the CuS nanocrystalline, so that the preparation of the core / shell structure is finished. According to the method, the core / shell structure nano powder with the core of CuS flowerlike nanocrystalline and the shell of TiO2 is synthesized with a two-step continuous chemical method at low temperature.

Description

technical field [0001] The present invention relates to a kind of CuS / TiO 2 Synthesis method of core / shell structure composite nanopowder. Background technique [0002] As an important semiconductor material, metal sulfides are widely used in solar cells, sensors, nanoswitches and catalysis due to their excellent electrical and optical properties. Among them, copper sulfide is an important transition metal sulfide. Its nanocrystalline materials have various forms such as nanoparticles, nanorods, nanowires, nanotubes, and nanoflowers. It has good catalytic activity, visible light absorption, and photoluminescence. , third-order nonlinear susceptibility and response speed performance. At present, CuS nanocrystals and CuS-based composite nanostructures are prepared by various methods including hydrothermal method, wet chemical synthesis method, template method, and microwave method. Composite nanostructures, especially core-shell structures, have attracted attention because ...

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): B01J13/02C01G3/12C01G23/053B82Y30/00
Inventor 黄毓娜刘富荣范振坤
Owner BEIJING UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com