Preparation method of purificant in nano titanic oxide photochemical catalyst chamber

A nano-titanium dioxide, photocatalytic technology, applied in physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., can solve the problems of innocuous pollutants, unsuitable for large-scale promotion, secondary pollution and energy consumption, etc. , to achieve the effect of improving photon efficiency, low production cost and inhibiting agglomeration

Inactive Publication Date: 2009-01-07
UNIV OF JINAN
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional treatment methods include physical adsorption method and chemical oxidation method, etc. These methods play an important role in the protection and treatment of indoor air purification, but these technologies have low efficiency to varying degrees, cannot completely harmless pollutants, and are easy to produce Secondary pollution or high energy consumption, not suitable for large-scale promotion and other defects, therefore, it is urgent to develop green indoor pollutant treatment technology that is more efficient, more economical, has deep oxidation ability, and has a wide range of applications

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the reaction tank, add 100 parts by mass of deionized water, under stirring, add 1 part by mass of composite surfactant; after 10 minutes, adjust the pH value of the solution to 1 with hydrochloric acid; after 15 minutes, add 100 parts by mass of methanol; Heat to a slight boil, add 10 parts by mass of propyl titanate until the reaction becomes a white gel; distill the gel with a 300W microwave, cool down, wash with 0.1mol / L ammonia water, and then dry it with a 300W microwave The material is discharged to obtain a visible light-responsive nano-titanium dioxide photocatalytic indoor air purifier;

[0022] The composite surfactant is composed of palmitic acid and fatty alcohol polyoxyethylene ether in a mass ratio of 1:5, wherein the degree of polymerization of polyoxyethylene is 6.

Embodiment 2

[0024] In the reaction tank, add 100 parts by mass of deionized water, under stirring, add 3 parts by mass of composite surfactant; after 10 minutes, adjust the pH value of the solution to 2 with nitric acid; after 15 minutes, add 70 parts by mass of ethanol; Heat to a slight boil, add 10 parts by mass of isopropyl titanate until the reaction becomes a white gel; distill the gel with a 400W microwave, cool down, wash with 0.1mol / L ammonia water, and then use a 400W microwave Dried, cooled and discharged to obtain a visible light-responsive nano-titanium dioxide photocatalytic indoor air purifier;

[0025] The composite surfactant is composed of stearic acid and octylphenol polyoxyethylene ether in a mass ratio of 1:7, wherein the degree of polymerization of polyoxyethylene is 10.

Embodiment 3

[0027] Add 100 parts by mass of deionized water to the reaction tank, and add 7 parts by mass of composite surfactant under stirring; after 10 minutes, adjust the pH value of the solution to 4 with p-toluenesulfonic acid; after 15 minutes, add isopropanol 10 parts by mass; heat the mixed solution to a slight boil, add 10 parts by mass of butyl titanate until the reaction becomes a white gel; distill the gel with 700W microwave, lower the temperature, and wash with 0.1mol / L ammonia water , and then dried with 500W microwave, cooled and discharged to obtain nano-titanium dioxide photocatalytic indoor air purifier responding to visible light;

[0028] The composite surfactant is composed of linoleic acid and dodecylphenol polyoxyethylene ether blended at a mass ratio of 1:10, wherein the degree of polymerization of polyoxyethylene is 16.

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 method for preparing a nanometer TiO2 photocatalytic indoor purificant as follows: under the combined action of microwave radiation and higher fatty acid and nonionic surfactants in a proper proportion, the purificant can be prepared under common temperature calcination. In a retort, deionized water is firstly added, a complex surfactant is added under stirring, a hydrolysis inhibitor is used for adjusting the pH value of the solution, then a dipolar organic solvent is added, and the mixture is heated to be slightly boiled, and then titanate is added until a white gel is formed; the gel is distilled by microwaves, washed by ammonia water after the temperature is cooled down, then dried by microwaves, and cooled for discharging, thereby obtaining the nanometer TiO2 photocatalytic indoor purificant responded by visible light. The nanometer TiO2 prepared by the invention has obvious absorption in a visible light region, the wavelength of which is 400-650 nm, and has higher bacteriostatic rate to Escherichia coli, staphylococcus aureus and bacillus subtilis under an indoor fluorescent lamp or an energy-saving lamp; the production cost is low; and the production efficiency is high.

Description

technical field [0001] The invention relates to a preparation method of a nano-titanium dioxide photocatalytic indoor purifier, in particular to a preparation method of a visible light-responsive nano-titanium dioxide photocatalytic indoor air purifier. Background technique [0002] At present, all countries in the world are facing the problem of deteriorating environment to varying degrees, and indoor organic matter and bacterial pollution are the two most serious types of indoor pollutants. Traditional treatment methods include physical adsorption method and chemical oxidation method, etc. These methods play an important role in the protection and treatment of indoor air purification, but these technologies have low efficiency to varying degrees, cannot completely harmless pollutants, and are easy to produce Secondary pollution or high energy consumption, not suitable for large-scale promotion and other defects, therefore, the development of more efficient, more economical...

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): B01J21/06B01D53/86
Inventor 王志玲崔玉孟平蕊刘志莲
Owner UNIV OF JINAN
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