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

Method for synthesizing praseodymium-doped nano titanium dioxide of carbon adsorption tetraisopropyl titanate hydrolysis system

A technology of tetraisopropyl titanate and nano-titanium dioxide is applied in the field of doped nano-titanium dioxide synthesis to achieve the effects of improving thermal stability and crystallinity, reducing sintering and high photocatalytic activity

Inactive Publication Date: 2012-06-20
INNER MONGOLIA UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of agglomeration and sintering of nano-scale titanium dioxide, the present invention provides a method for synthesizing praseodymium-doped nano-titanium dioxide in a carbon-adsorbed tetraisopropyl titanate hydrolysis system that prevents the agglomeration and sintering of nano-scale titanium dioxide in the preparation process

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
  • Method for synthesizing praseodymium-doped nano titanium dioxide of carbon adsorption tetraisopropyl titanate hydrolysis system
  • Method for synthesizing praseodymium-doped nano titanium dioxide of carbon adsorption tetraisopropyl titanate hydrolysis system
  • Method for synthesizing praseodymium-doped nano titanium dioxide of carbon adsorption tetraisopropyl titanate hydrolysis system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Example: Preparation of titanium dioxide powder with a molar ratio of praseodymium and titanium dioxide of 0.07%

[0017] (1) Configure a praseodymium nitrate solution with a concentration of 0.01mol / L, take 2.5g carbon black, mix 1.18ml praseodymium nitrate solution, 8.82ml distilled water and 20ml absolute ethanol, stir and ultrasonically oscillate for 1 hour, adjust with acetic acid, Make the pH value of the system 2 to obtain the mixed system A;

[0018] (2) Take 5ml of tetraisopropyl titanate and 5ml of isopropanol and mix and stir for 10 minutes to obtain solution B;

[0019] (3) Slowly add the solution B dropwise to the mixed system A under the condition of stirring in an ice-water bath. After the dropwise addition, remove the ice-water bath, and seal and stir at room temperature for 6 hours. Then pour it into a polytetrafluoroethylene-lined high-pressure reactor, heat it under magnetic stirring at 150°C for 12 hours, and then cool it to room temperature. The h...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for synthesizing praseodymium-doped nano titanium dioxide of a carbon adsorption tetraisopropyl titanate hydrolysis system, and belongs to the technical field of nanomaterial preparation. By the method, the problems of high probability of agglomeration and sintering of superfine titanium dioxide are prevented; meanwhile, the thermal stability and the photo-catalytic activity of the anatase titanium dioxide are improved. The method comprises the following steps of: taking tetraisopropyl titanate, praseodymium nitrate and carbon black as raw materials; slowly dropwise adding mixed solution of isopropyl alcohol and tetraisopropyl titanate into an aqueous solution system of the carbon black, ethanol and praseodymium nitrate of which the pH is adjusted to be 2 by acetic acid; mixing and stirring at normal temperature and then pouring into a reaction kettle; and performing reduced pressure distillation, drying, grinding and calcining of precipitate adsorbed by the carbon black obtained by hydrothermal reaction to obtain praseodymium-doped nano titanium dioxide with high thermal stability. The method has the characteristics of simple process, easiness and convenience in operation, mild reaction conditions and high yield, and the obtained product has the characteristics of high crystallinity, large specific surface area, small particle diameter and excellent photo-catalytic performance.

Description

technical field [0001] The invention relates to a method for synthesizing praseodymium-doped nano-titanium dioxide in a carbon-adsorbed tetraisopropyl titanate hydrolysis system, and belongs to the technical field of nano-material preparation. Background technique [0002] Photocatalysis is an emerging technology for environmental purification. Nano-titanium dioxide photocatalysis can effectively oxidize or reduce harmful molecules adsorbed on its surface, kill bacteria, inhibit viruses, and convert harmful organic matter and bacteria into harmless substances such as water and carbon dioxide without any secondary pollution . TiO 2 The crystal form, grain size and particle diameter, surface state and other factors have a great influence on its photocatalytic performance. Nanoparticles with large surface area have good catalytic activity and selectivity due to their surface effect and volume effect. Nano-TiO 2 Due to its quantum size effect, the conduction band and valenc...

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): B01J23/10B01J35/10
Inventor 郭贵宝安胜利介瑞华魏洪培赵永旺
Owner INNER MONGOLIA UNIV OF SCI & TECH
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