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

Preparation method of high temperature phase TiO2(B) material

A high-temperature, pure-phase technology, applied in the field of photocatalytic degradation of pollutants, can solve problems such as limited applications, and achieve the effects of simple preparation methods, low raw material prices, and good thermal stability

Active Publication Date: 2018-12-21
SHAANXI NORMAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the TiO prepared by these methods 2 (B) After the temperature is above 500 °C, the crystal phase will gradually transform into anatase phase, which limits its application in some fields
TiO2 has not been inhibited at high temperature 2 (B) Phase transition reports

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 high temperature phase TiO2(B) material
  • Preparation method of high temperature phase TiO2(B) material
  • Preparation method of high temperature phase TiO2(B) material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 6 mL of titanium tetra-n-butoxide and 3 mL of acetic acid to 20 mL of ethylene glycol, and stir uniformly for 15 minutes, then add 30 mL of 15 mol / L NaOH aqueous solution, and continue to stir for 10 minutes. The resulting mixture was transferred to a 100mL hydrothermal reactor, placed in an oven at 180°C for 12h, then cooled to room temperature naturally, taken out, filtered with suction, and washed with deionized water and ethanol to neutralize the product. The resulting filtrate was 300mL Stir in 0.1mol / L HCl aqueous solution for 12h, filter with suction, wash with deionized water and ethanol to neutrality, then dry at 80℃ for 12h to obtain TiO 2 (B) Precursor H 2 Ti 4 O 9 . 0.3g TiO 2 (B) Precursor H 2 Ti 4 O 9 Disperse with 0.01mL of hydrofluoric acid (the mass fraction of hydrogen fluoride is 49%) in 10mL of deionized water, place it in a 20mL small crucible and stir evenly for 4h to form a uniformly dispersed suspension. The mass fraction of hydrogen fluoride i...

Embodiment 2

[0025] In this example, the amount of hydrofluoric acid is 0.03 mL, and the other steps are the same as in Example 1, to obtain high temperature phase TiO 2 (B) Material, denoted as 0.3% F-HT.

Embodiment 3

[0027] In this embodiment, the amount of hydrofluoric acid is 0.05 mL, and the other steps are the same as in embodiment 1, to obtain high temperature phase TiO 2 (B) Material, denoted as 0.5% F-HT.

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
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a high temperature phase TiO2(B) material. The preparation method comprises the steps that firstly a TiO2(B) precursor or a pure phase TiO2(B) is prepared by a conventional method, and then a fluoride, distilled water and the TiO2 (B) precursor or the pure phase TiO2(B) are uniformly mixed, slowly evaporated, and then subjected to high temperature thermal oxidation treatment in an atmospheric atmosphere to obtain a high temperature phase TiO2(B) excellent in stability. The preparation method is simple, is low in raw material price, has no complete phase transformation of the material at a high temperature, has good thermal stability, is environmentally friendly, and can be effectively applied to the fields of photocatalysis, electrocatalysis,photoelectric catalysis, lithium ion batteries and the like.

Description

Technical field [0001] The invention belongs to the technical field of photocatalytic degradation of pollutants, and specifically relates to a high-temperature phase TiO 2 (B) Preparation method of material. Background technique [0002] TiO 2 (B) is a homogeneous variant of metastable titanium oxide with a lower density and a loose structure than anatase and rutile. It has attracted much attention in the fields of lithium ion batteries, capacitors, sensors, and photocatalysis and photocatalysis. At present, people can prepare TiO by various methods 2 (B), the traditional preparation method is acetic acid solvothermal method (Changhua Wang, Xintong Zhangand Yichun Liu. Coexistence of an anatase / TiO 2 (B)heterojunction and an exposed(001)facet in TiO 2 nanoribbon photocatalysts synthesized via a fluorine-freeroute and topotactic transformation[J].Nanoscale,2014,6:5329–5337.), strong alkali hydrothermal method (Yan X,Zhang Y,Zhu K,et al.Enhanced electrochemical properties of 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
Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047C01G23/07B01J21/06
CPCC01G23/047C01G23/07B01J21/063B01J35/33B01J35/39
Inventor 马艺王奕岚王子豪张婉尹志广王增林
Owner SHAANXI 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