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

TiO2 nanometer powder of different Sn doping amounts prepared through direct solution oxidation method and application thereof

A technology of nano powder and mixed solution, applied in the field of nano materials, can solve the problems of many kinds of raw materials, large energy band gap and high reaction temperature, and achieve the effect of improving photocatalytic efficiency, broadening application range and high photocatalytic performance.

Active Publication Date: 2019-10-11
DALIAN JIAOTONG UNIVERSITY
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, TiO 2 The semiconductor has a large energy band gap (3.2eV) and can only be excited by ultraviolet light
But TiO 2 Photocatalysts have encountered two major bottlenecks in the process of popularization and application: (1) low utilization rate of visible light
The preparation process of the above-mentioned method is complicated, and there are many kinds of raw materials required, and the reaction temperature is high. Alkaline or organic reagents such as ammonia water and ethanol are often used, as well as equipment such as hydrothermal reaction kettles and resistance furnaces (muffle furnaces), and the cost is also relatively high.

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
  • TiO2 nanometer powder of different Sn doping amounts prepared through direct solution oxidation method and application thereof
  • TiO2 nanometer powder of different Sn doping amounts prepared through direct solution oxidation method and application thereof
  • TiO2 nanometer powder of different Sn doping amounts prepared through direct solution oxidation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of 0.5at% Sn-doped TiO at 75 °C 2 The method for nanopowder, comprises the steps:

[0026] (1) Put 270mL of deionized water in a beaker, add 15mL of glacial acetic acid to adjust the pH value of the solution to 2, and obtain an acidic aqueous solution. Put the beaker on a magnetic stirrer and stir continuously at 30°C. The stirring speed is 300r / min.

[0027] (2) Put 270mL deionized water in another beaker, add 0.175g tin tetrachloride pentahydrate solid to dissolve it in deionized water, then add 30mL glacial acetic acid, dissolve for 15min, then add 34mL tetrabutyl titanate ester to obtain a mixed solution of tin tetrachloride pentahydrate, water, glacial acetic acid and tetrabutyl titanate. (The molar ratio of tetrabutyl titanate, glacial acetic acid and deionized water is 1:5:150)

[0028] (3) Add the mixed solution of tin tetrachloride pentahydrate, water, glacial acetic acid and tetrabutyl titanate obtained in step (2) dropwise to the acidic aqueou...

Embodiment 2

[0031] Preparation of 2at% Sn-doped TiO at 75 °C 2 The method for nanopowder, comprises the steps:

[0032] (1) Put 270mL of deionized water in a beaker, add 15mL of glacial acetic acid to adjust the pH value of the solution to 2, and obtain an acidic aqueous solution. Put the beaker on a magnetic stirrer and stir continuously at 30°C. The stirring speed is 300r / min.

[0033] (2) Put 270mL deionized water in another beaker, add 0.7012g tin tetrachloride pentahydrate solid to dissolve in deionized water, then add 30mL glacial acetic acid, dissolve for 15min, then add 34mL tetrabutyl titanate ester to obtain a mixed solution of tin tetrachloride pentahydrate, water, glacial acetic acid and tetrabutyl titanate. (The molar ratio of tetrabutyl titanate, glacial acetic acid and deionized water is 1:5:150)

[0034] (3) Add the mixed solution of tin tetrachloride pentahydrate, water, glacial acetic acid and tetrabutyl titanate obtained in step (2) dropwise to the acidic aqueous so...

Embodiment 3

[0037] Preparation of 4at% Sn-doped TiO at 75 °C 2 The method for nanopowder, comprises the steps:

[0038] (1) Put 270mL of deionized water in a beaker, add 15mL of glacial acetic acid to adjust the pH value of the solution to 2, and obtain an acidic aqueous solution. Put the beaker on a magnetic stirrer and stir continuously at 30°C. The stirring speed is 300r / min.

[0039] (2) Dissolve in another beaker, put 270mL deionized water, add 1.4024g tin tetrachloride pentahydrate solid to dissolve in deionized water, then add 30mL glacial acetic acid, dissolve for 15min, then add 34mL tetratitanate Butyl ester to obtain a mixed solution of tin tetrachloride pentahydrate, water, glacial acetic acid and tetrabutyl titanate. (The molar ratio of tetrabutyl titanate, glacial acetic acid and deionized water is 1:5:150)

[0040] (3) Add the mixed solution of tin tetrachloride pentahydrate, water, glacial acetic acid and tetrabutyl titanate obtained in step (2) dropwise to the acidic ...

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
The average particle sizeaaaaaaaaaa
Bandgap widthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of nanometer materials, in particular to Sn-doped TiO2 nanometer powder prepared through a direct solution oxidation method. For overcoming the defect thatSn-doped TiO2 nanometer powder is prepared under high temperature (300 DEG C or above) traditionally, the novel direct solution oxidation method is utilized, tetrabutyl titanate and stannic chloridepentahydrate are adopted as raw materials, glacial acetic acid is adopted as a stabilizer, the TiO2 nanometer powder of different Sn doping amounts is prepared under the temperature of 50-100 DEG C, the average grain size ranges from 2 nanometers to 6 nanometers, and the energy gap ranges from 3.1 eV to 3.4 eV. The TiO2 nanometer powder of the Sn doping amount being 0.5 at% has the best crystallinity degree and the highest photo-catalytic performance, in an experiment, the TiO2 nanometer powder of the Sn doping amount being 0.5 at% invades a towel to remove formaldehyde, compared with the pureTiO2 nanometer powder with no doped Sn, the effect is good, the application range of the TiO2 nanometer material on the market is broadened, and meanwhile the theoretical basis is supplied to application for surface modification of base materials (such as glass, plastics and textile) which cannot bear high temperature.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to the preparation of TiO with different Sn doping amounts by direct solution oxidation 2 Nano powder and its application. Background technique [0002] TiO 2 As a cheap, stable and non-toxic semiconductor oxide, it is widely used in the field of photocatalysis. However, TiO 2 Semiconductors have a large energy band gap (3.2eV) and can only be excited by ultraviolet light. But TiO 2 Photocatalysts have encountered two major bottlenecks in the process of popularization and application: (1) The utilization rate of visible light is low. This is mainly because TiO 2 Visible light with a wide band gap (3.23eV) and longer wavelength (λ>387nm) cannot excite electrons in the valence band, and the energy of this part of light is about 96% in the solar spectrum (Zhang Ying et al., Functional Materials, 2003 , 44:172); (2) TiO 2 The light quantum efficiency is low, and the pho...

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): B01J23/14B01J37/10B01J37/12B82Y30/00B82Y40/00B01D53/86B01D53/72
CPCB01J23/14B01J37/10B01J37/12B82Y30/00B82Y40/00B01D53/8668B01J35/39
Inventor 郭玉刘世民赵东扬
Owner DALIAN JIAOTONG UNIVERSITY
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