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

Preparation method of anatase black nano titanium oxide powder

A technology of nano-titanium oxide and anatase, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve problems such as difficult to meet industrialization, narrow light absorption range, complex process, etc., and meet production requirements and use requirements, easy industrialization, and simple preparation process

Inactive Publication Date: 2015-08-19
JINGDEZHEN CERAMIC INSTITUTE
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, titanium dioxide faces great challenges in solar energy utilization, mainly due to its narrow light absorption range and low separation efficiency of electron-hole pairs.
Titanium dioxide can only absorb ~5% of the ultraviolet light in the solar spectrum, but cannot use the energy of visible light and near-infrared light; the intrinsic conductivity is only ~10 -10 S / cm, which is not conducive to the separation and transport of photogenerated electron-hole pairs
Among them, the hydrogen reduction method has the disadvantages of complex process, long time consumption, high cost, etc., and there are unsafe factors such as inflammability and explosion; the hydrogen plasma reduction method and aluminum reduction method also have high equipment investment costs, high energy consumption, and process The conditions are complex and the production yield is low; the black titanium oxide prepared by the two-step non-metallic doping method has the disadvantage of insufficient light absorption
To sum up, the existing black titanium oxide preparation methods are still difficult to meet the needs of industrialization, and a new method to easily prepare anatase black titanium oxide powder is sought to produce black titanium oxide powder with excellent performance in batches is an urgent problem to be solved

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 anatase black nano titanium oxide powder
  • Preparation method of anatase black nano titanium oxide powder
  • Preparation method of anatase black nano titanium oxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of a kind of anatase black nano titanium oxide powder of the present embodiment, its steps are as follows:

[0029] (1) Ti 4+ Solution preparation

[0030] At room temperature, add 20g of ammonium fluorotitanate powder into 200ml of deionized water and stir until the ammonium fluorotitanate powder is completely dissolved to form a transparent Ti 4+ solution;

[0031] (2) Preparation of raw material solution

[0032] According to molar ratio Ti 3+ / Ti 4+ = 1, in the above Ti 4+ 15% TiCl was added to the solution 3 The solution was stirred and mixed for 10 minutes to obtain a raw material solution;

[0033] (3) Precipitation reaction

[0034] Add 40g of precipitant propionic acid to the above raw material solution, stir and add 0.1mol / L dilute ammonia water until the pH value of the solution system is 5, and a blue precipitate is formed;

[0035] (4) Precipitate Calcination

[0036] The above precipitate was filtered and washed repeatedly ...

Embodiment 2

[0038] The preparation method of a kind of anatase black nano titanium oxide powder of the present embodiment, its steps are as follows:

[0039] (1) Ti 4+ Solution preparation

[0040] At room temperature, add 20g of ammonium fluorotitanate powder into 200ml of deionized water and stir until the ammonium fluorotitanate powder is completely dissolved to form a transparent Ti 4+ solution;

[0041] (2) Preparation of raw material solution

[0042] According to molar ratio Ti 3+ / Ti 4+ = 2, in the above Ti 4+ 15% TiCl was added to the solution 3 The solution was stirred and mixed for 10 minutes to obtain a raw material solution;

[0043] (3) Precipitation reaction

[0044] Add 60g of precipitant propionic acid to the above raw material solution, stir and add 0.1mol / L dilute ammonia water until the pH value of the solution system is 5, and a blue precipitate is formed;

[0045] (4) Precipitate Calcination

[0046] The above precipitate was filtered and washed repeatedly ...

Embodiment 3

[0048] The preparation method of a kind of anatase black nano titanium oxide powder of the present embodiment, its steps are as follows:

[0049] (1) Ti 4+ Solution preparation

[0050] At room temperature, add 20g of ammonium fluorotitanate powder into 200ml of deionized water and stir until the ammonium fluorotitanate powder is completely dissolved to form a transparent Ti 4+ solution;

[0051] (2) Preparation of raw material solution

[0052] According to molar ratio Ti 3+ / Ti 4+ = 3, in the above Ti 4+ 15% TiCl was added to the solution 3 The solution was stirred and mixed for 10 minutes to obtain a raw material solution;

[0053] (3) Precipitation reaction

[0054] Add 90g of precipitant propionic acid to the above raw material solution, stir and add 0.1mol / L dilute ammonia water until the pH value of the solution system is 5, and a blue precipitate is formed;

[0055] (4) Precipitate Calcination

[0056] The above precipitate was filtered and washed repeatedly wi...

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 discloses a preparation method of an anatase black nano titanium oxide powder. The preparation method comprises the steps of mixing a Ti4+ solution and a Ti3+ solution together to obtain a raw material solution, adding a precipitator to the raw material solution and reacting by stirring under the condition of a pH value within the range of 5-7 to obtain precipitate, filtering and cleaning the precipitate, and then roasting to obtain the anatase black nano titanium oxide powder. The anatase black nano titanium oxide powder product prepared by use of the method is of a pure anatase phase, and can be well controlled in the Ti3+ content. The preparation method is capable of greatly reducing the production cost; besides, the preparation method is simple and fast in process; the preparation method is applicable to batch production and prone to industrialization, and further capable of effectively meeting the production and use requirements of the black nano titanium oxide.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a preparation method of anatase black nano titanium oxide powder. Background technique [0002] As an important new energy and environmental protection material, titanium dioxide can be used in photocatalysis, solar power generation, solar heat collection and other fields. However, titanium dioxide faces great challenges in solar energy utilization, mainly due to its narrow light absorption range and low separation efficiency of electron-hole pairs. Titanium dioxide can only absorb ~5% of the ultraviolet light in the solar spectrum, but cannot use the energy of visible light and near-infrared light; the intrinsic conductivity is only ~10 -10 S / cm, which is not conducive to the separation and transport of photogenerated electron-hole pairs. These problems have seriously affected the wide application of titanium dioxide in the fields of energy and environment, so that the s...

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): C01G23/053C01G23/08B01J21/06
Inventor 赵学国王艳香黄丽群杨志胜郭平春
Owner JINGDEZHEN CERAMIC INSTITUTE
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