Preparation method of blue titanium dioxide particles

A titanium dioxide and particle technology, which is applied in the field of preparation of blue titanium dioxide particles, can solve the problems of unfavorable physical and chemical properties of TiO2, uneven particle surface, and many surface defects, and achieves good visible light response, short reaction time, and preparation. Efficient effect

Active Publication Date: 2020-05-19
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TiO treated by this method 2 Surface, showing a disordered structure, and the surface has a large number of defects
Metal impurities will be introduced during the reduction process using metal vapor, which is important

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 of blue titanium dioxide particles
  • Preparation method of blue titanium dioxide particles
  • Preparation method of blue titanium dioxide particles

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] A fast laser irradiation of TiO 2 Particles, a method for preparing blue titanium dioxide particles with visible light response, the method includes the following steps:

[0044] 1) In the muffle furnace, at 200 degrees Celsius, the TiO 2 The particles (particle size is 100nm) are pre-heated to clean their surface;

[0045] 2) Step 1) preheated TiO 2 The particles are pressed on the quartz glass substrate to ensure the surface flatness of the sample after pressing;

[0046] 3) Use laser to treat step 2) TiO after treatment 2 The particles are irradiated for 5 seconds, and the laser parameters are selected as: pulse width 8 nanoseconds; wavelength 355nm; power 3W; frequency 1000Hz;

[0047] 4) Step 3) treated TiO 2 After the particles are uniformly mixed again, repeat step 2) and step 3) 6 times to obtain uniform blue TiO 2 Particles.

[0048] After this method, TiO 2 The particles change from white to uniform blue. 4-6 layers of TiO coating are grown on the su...

Example Embodiment

[0049] Example 2

[0050] A fast laser irradiation of TiO 2 Particles, a method for preparing blue titanium dioxide particles with visible light response, the method includes the following steps:

[0051] 1) In the muffle furnace, at 300 degrees Celsius, the TiO 2 The particles (particle size is 25nm) are pre-heated to clean their surface;

[0052] 2) Step 1) preheated TiO 2 The particles are pressed on the quartz glass substrate to ensure the surface flatness of the sample after pressing;

[0053] 3) Use laser to treat step 2) TiO after treatment 2 The particles are irradiated for 3 seconds, and the laser parameters are selected as: pulse width 8 nanoseconds; wavelength 1700nm; power 1W; frequency 1000Hz;

[0054] 4) Step 3) treated TiO 2 After the particles are uniformly mixed again, repeat step 2) and step 3) 6 times to obtain uniform blue TiO 2 Particles.

[0055] After this method, TiO 2 The particles change from white to uniform blue. Several TiO coatings are grown on the surface...

Example Embodiment

[0056] Example 3

[0057] A fast laser irradiation of TiO 2 Particles, a method for preparing blue titanium dioxide particles with visible light response, the method includes the following steps:

[0058] 1) In the muffle furnace, at 200 degrees Celsius, the TiO 2 The particles (particle size is 5000nm) are pre-heated to clean their surface;

[0059] 2) Step 1) preheated TiO 2 The particles are pressed on the quartz glass substrate to ensure the surface flatness of the sample after pressing;

[0060] 3) Use laser to treat step 2) TiO after treatment 2 The particles are irradiated for 10 seconds, and the laser parameters are selected as: pulse width 8 nanoseconds; wavelength 1064nm; power 5W; frequency 1000Hz;

[0061] 4) Step 3) treated TiO 2 After the particles are re-mixed uniformly, repeat step 2) and step 3) 20 times to obtain uniform blue TiO 2 Particles.

[0062] After this method, TiO 2 The particles change from white to uniform blue. Several TiO coatings are grown on the surfac...

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 provides a preparation method of blue titanium dioxide particles. The method comprises the following steps: 1) removing surface impurities of TiO2 particles; 2) tabletting the TiO2 particles treated in the step 1), so that the surfaces of the tabletted TiO2 particles are flat; 3) irradiating the TiO2 particles treated in the step 2) for 3-10 seconds by using rapid laser with a pulsewidth of picoseconds or nanoseconds to obtain TiO2 particles with TiO films growing on the surfaces in situ; and 4) uniformly mixing the TiO2 particles treated in the step 3) again, and repeating thestep 2) and the step 3) until the whole TiO2 particles are uniform in blue color. According to the method, the preparation process is clean and free of pollution, the required single reaction time isextremely short and is only 3-10 seconds, and the preparation efficiency is high; the prepared blue titanium dioxide particles have good color stability in natural air and show good electrical transport performance, the photocurrent density is improved by about 3 times compared with that of the raw material TiO2, and the current impedance is obviously reduced.

Description

technical field [0001] The invention belongs to the field of nanomaterials and relates to a blue titanium dioxide (TiO2) with visible light response. 2 ) method for the preparation of particles. Background technique [0002] TiO 2 It is an important industrial inorganic raw material, widely used in coatings, plastics, papermaking, printing ink, chemical fiber, rubber, cosmetics and other industries. Especially as a dye, it has the best opacity, whiteness and brightness. It is considered to be a white pigment with the best performance, and its adhesion is strong, it is not easy to change chemically, and it has good stability in the air environment. Color durability. At the same time, TiO 2 It is also a kind of direct bandgap wide bandgap semiconductor material with excellent performance. Its bandgap width reaches 3.0-3.2eV, which can effectively absorb ultraviolet light. Pollutants, light-induced sterilization, and air purification are also widely used. However, TiO 2 ...

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): C01G23/047
CPCC01G23/047C01P2002/84C01P2004/01C01P2004/04C01P2006/40C01P2006/66
Inventor 陈小龙王达金士锋
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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