A silver-doped nanoanatase phase tio 2 Powder preparation method

A nano-anatase and silver doping technology, applied in the direction of titanium oxide/hydroxide, titanium dioxide, etc., can solve the problems of easy pollution of the environment, difficult control, high production cost, etc., and achieve simple and efficient process, high powder purity, The effect of increasing the doping ratio

Active Publication Date: 2021-04-27
合肥龙智机电科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process is complex and difficult to control, and the production cost is high
In addition, the main problems faced by the above methods are: The raw materials used are usually organic matter such as titanium alkoxide, The synthesis process will produce acid or the synthesis process will use more acid; the above two problems lead to huge environmental challenges in the synthesis process, which is very easy to pollute the environment

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
  • A silver-doped nanoanatase phase tio <sub>2</sub> Powder preparation method
  • A silver-doped nanoanatase phase tio <sub>2</sub> Powder preparation method
  • A silver-doped nanoanatase phase tio <sub>2</sub> Powder preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A silver-doped nano anatase phase TiO 2 The preparation method of powder, its implementation process is carried out according to the following steps successively:

[0029] (1) Prepare 10ml of sodium borohydride with a concentration of 1mol / L and 5ml of AgNO with a concentration of 2mol / L 3 solution, the AgNO 3 The solution was dropped into the sodium borohydride solution at a rate of 0.2ml / min to obtain a suspension;

[0030] (2) Weigh 2 g of titanium metal powder with a mass percentage of 99.9% and a particle size of 300 mesh, and mix it with 200 ml of deionized water to obtain a mixture of titanium powder and deionized water;

[0031] (3) Add the suspension to the mixture of titanium powder and deionized water, heat it from room temperature to 120°C in a temperature-controlled and pressure-controlled device, continuously feed air, keep the pressure at 8 MPa, and keep it warm for 5 hours to obtain a solid-liquid mixture;

[0032] (4) Centrifuge the obtained solid-li...

Embodiment 2

[0035] A silver-doped nano anatase phase TiO 2 The preparation method of powder, its implementation process is carried out according to the following steps successively:

[0036] (1) Prepare 10ml of sodium borohydride with a concentration of 1mol / L and 5ml of AgNO with a concentration of 2mol / L 3 solution, at 10 °C the AgNO 3 The solution was dropped into the sodium borohydride solution at a rate of 0.5ml / min to obtain a suspension;

[0037] (2) Weigh 2 g of titanium metal powder with a mass percentage of 99.93% and a particle size of 400 mesh, and mix it with 400 ml of deionized water to obtain a mixture of titanium powder and deionized water;

[0038] (3) Add the suspension to the mixture of titanium powder and deionized water, heat it from room temperature to 170°C in a temperature-controlled and pressure-controlled device, continuously feed air, keep the pressure at 10MPa, and keep it warm for 6 hours to obtain a solid-liquid mixture;

[0039] (4) Centrifuge the obtaine...

Embodiment 3

[0042] A silver-doped nano anatase phase TiO 2 The preparation method of powder, its implementation process is carried out according to the following steps successively:

[0043] (1) Prepare 10ml of sodium borohydride with a concentration of 2mol / L and 5ml of AgNO with a concentration of 2.5mol / L 3 solution, AgNO at 7 °C 3 The solution was dripped into the sodium borohydride solution at a rate of 0.3ml / min to obtain a suspension;

[0044] (2) Weigh 1 g of titanium metal powder with a mass percentage of 99.92% and a particle size of 400 mesh, and mix it with 150 ml of deionized water to obtain a mixture of titanium powder and deionized water;

[0045](3) Add the suspension to the mixture of titanium powder and deionized water, heat it from room temperature to 150°C in a temperature-controlled and pressure-controlled device, continuously feed air, keep the pressure at 9MPa, and keep it warm for 5.5h to obtain a solid-liquid mixture;

[0046] (4) Centrifuge the obtained solid-...

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
particle sizeaaaaaaaaaa
Login to view more

Abstract

A silver-doped nano anatase phase TiO 2 The preparation method of the powder belongs to the field of material preparation; the preparation method: 1) the AgNO 3 The solution is mixed with sodium borohydride solution to obtain a suspension; 2) Metal titanium powder is mixed with deionized water; 3) The suspension is added to the mixture of titanium powder and deionized water, heated, pressurized and kept warm; 4) The obtained The solid-liquid mixture was centrifuged, washed, and dried to obtain silver-doped anatase TiO 2 Powder; the process temperature of the present invention is low, only need to heat the solution to boiling, without heating to high temperature, and the process is simple, efficient, environmentally friendly, without introducing other foreign impurities, the obtained anatase phase TiO 2 The powder has high purity, and high-purity products can be prepared, which greatly improves the doping efficiency of silver.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a silver-doped nano anatase phase TiO 2 Powder preparation method. Background technique [0002] TiO 2 Materials are widely used in various fields of national economy, TiO 2 There are three crystal forms: anatase, rutile and brookite. Among them, the anatase phase TiO 2 Due to its strong photocatalytic performance, the material has received more attention. However, as a typical semiconductor material, its band gap is 3.2eV and can only be excited by short ultraviolet light ( lambda <387 nm), and ultraviolet light (below 400nm) in the solar spectrum only accounts for 5%. Therefore, the utilization rate of solar energy for anatase phase photocatalytic materials is seriously insufficient at present. In order to overcome this shortcoming, people have developed noble metal doped Improving its photocatalytic performance by a heterogeneous method, and preparing silver-doped ...

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 Patents(China)
IPC IPC(8): C01G23/07
CPCC01G23/07C01P2006/80
Inventor 张武田道来李思成王永宁刘荣荣
Owner 合肥龙智机电科技有限公司
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