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

Graduated porous titanium dioxide microsphere, and preparation method and applications thereof

A hierarchical porous and titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, material resistance, etc., can solve the problems of complex preparation methods, achieve simple and practical process, facilitate large-scale production, and enhance the effect of gas sensing performance

Active Publication Date: 2015-10-28
JIANGXI NORMAL UNIV
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a hierarchical porous titanium dioxide microsphere and its preparation method and application, which solves the shortcomings of the existing hierarchical porous titanium dioxide material, such as complex preparation methods and the need for subsequent treatment, and constructs this material for the first time. Gas sensor, applied to the detection of acetone gas

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
  • Graduated porous titanium dioxide microsphere, and preparation method and applications thereof
  • Graduated porous titanium dioxide microsphere, and preparation method and applications thereof
  • Graduated porous titanium dioxide microsphere, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The beneficial effects of the present invention will be described in detail below in conjunction with the embodiments of the accompanying drawings, aiming at helping readers better understand the essence of the present invention, but not limiting the implementation and protection scope of the present invention.

[0016] The graded porous titanium dioxide has a microspherical structure with a diameter of 2-5 μm. The graded porous titanium dioxide microspheres are assembled from truncated octahedral nanocrystals, and the diameter of the truncated octahedral nanocrystals is 50-100 nm, and The high-energy {001} crystal face of the anatase phase is exposed, and the hierarchically porous titanium dioxide microspheres have a hierarchical porous structure, and the pore diameters thereof are distributed in the range of 5-20 nm.

[0017] The preparation process of the hierarchical porous titanium dioxide microspheres is completed according to the following steps: first, titanium s...

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
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a graduated porous titanium dioxide microsphere, and a preparation method and applications thereof. According to the preparation method, preparation is completed via one-step hydrothermal reaction; the preparation method is simple and convenient; yield is high; large-scale production can be realized easily; the graduated porous titanium dioxide microsphere possesses a microspheric structure; microsphere diameter ranges from 2 to 5<mu>m; the graduated porous titanium dioxide microsphere is obtained via assembling of truncated-octahedral nanocrystals; the particle size of the truncated-octahedral nanocrystals ranges from 50 to 100nm; anatase phase high-energy (001) crystal faces are exposed; the graduated porous titanium dioxide microsphere possesses a graduated porous structure; pore size ranges from 5 to 20nm. Indirectly-heated gas sensor technology can be adopted for coating, welding, and aging of the graduated porous titanium dioxide microsphere material so as to prepare semi-conductive type gas sensors. It is shown by gas sensitive property testing results that the semi-conductive type gas sensors possesses structural enhanced gas-sensitive property on acetone, and research approach of resistance-type semiconductor gas sensors is widened.

Description

technical field [0001] The invention relates to a graded titanium dioxide microsphere, in particular to a graded porous titanium dioxide microsphere and its preparation method and application. Background technique [0002] Due to the small size effect, surface effect, quantum size effect and quantum tunneling effect of nanoparticles, they have characteristics that conventional materials do not have in terms of magnetism, light, electricity, and sensitivity. Therefore, they are used in electronic materials, optical materials, and catalysis. , sensing, ceramic toughening and other aspects have broad application prospects. However, in the process of actual use, it is found that nanoparticles also have many problems. For example, although their specific surface area is large and their activity is high, their structure is unstable and easy to agglomerate, resulting in a sharp decrease in their actual available specific surface area and activity. Assembling nanoparticles (includi...

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): C01G23/047C01G23/053G01N27/12
Inventor 杨勇
Owner JIANGXI NORMAL 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