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

Preparation method and application of composite material Bi2O3-Co3O4 for degrading gaseous pollutants at room temperature

A technology of bi2o3-co3o4 and composite materials, applied in the direction of separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of air secondary pollution, high cost, inconvenient use, etc., and achieve easy reaction conditions, The effect of no pollution to the environment

Active Publication Date: 2019-08-06
LIAONING UNIVERSITY
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures are costly, inconvenient to use, limited by conditions, and slow to take effect. Some products may even cause secondary pollution to the air. Therefore, finding a method that can efficiently, conveniently and safely degrade formaldehyde has become the focus of attention.

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 and application of composite material Bi2O3-Co3O4 for degrading gaseous pollutants at room temperature
  • Preparation method and application of composite material Bi2O3-Co3O4 for degrading gaseous pollutants at room temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Composite material Bi for degradation of gaseous pollutants at room temperature 2 o 3 -Co 3 o 4 preparation method

[0024] 1) Dissolve 1.94 g of cobalt nitrate hexahydrate and 1.94 g of bismuth nitrate pentahydrate in 15 mL of nitric acid, respectively, and then dilute to 50 mL respectively to obtain a solution containing bismuth and a solution containing cobalt.

[0025] 2) Mix the bismuth-containing solution and the cobalt-containing solution obtained in step 1) evenly, pour into the mixed solution of 3mL polyethylene glycol and 50mL NaOH solution with a concentration of 0.8mol / L, precipitate after stirring, and centrifuge , the obtained precipitate was washed twice with deionized water and once with ethanol, and the sample obtained after centrifugation was placed in a drying oven and dried at 100° C. for 10 h.

[0026] 3) The dried sample was calcined in a muffle furnace under air conditions at a heating rate of 5°C / min, 500°C for 2h, cooled to room temperat...

Embodiment 2

[0030] Composite Bi 2 o 3 -Co 3 o 4 Application as a catalyst in the degradation of gaseous pollutants at room temperature

[0031] (1) Degradation of formaldehyde

[0032] Method: get the composite material Bi prepared by 0.1 gram embodiment 1 2 o 3 -Co 3 o 4 Put it into a closed experimental device, inject 5 μL of 37% formaldehyde solution into the experimental device, and regularly detect the concentration of formaldehyde gas in the experimental device.

[0033] Comparative test: Inject 5 μL of 37% formaldehyde solution directly into the airtight experimental device, and regularly detect the concentration of formaldehyde gas in the experimental device.

[0034] After standing still at room temperature for 10 h, the concentration of formaldehyde gas in the experimental device was measured. Such as figure 2 as shown, figure 2 In A is the addition of composite material Bi 2 o 3 -Co 3 o 4 histogram of figure 2 In A, it can be seen that after 10 hours, the for...

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
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method and application of composite material Bi2O3-Co3O4 for degrading gaseous pollutants at room temperature. The method includes separately dissolving a ceriumsalt and a cobalt salt into an acid solution to obtain a solution containing cerium and a solution containing cobalt; mixing the solution containing cerium and the solution containing cobalt, pouringthe mixture into an alkaline solution containing a dispersing agent, precipitating the precipitate, and performing centrifugation and drying; calcining the dried product under inert gas or air condition, cooling the product to room temperature, and grinding the product to obtain the composite material Bi2O3-Co3O4. The composite material Bi2O3-Co3O4 has the ability to adsorb and degrade pollutants,so that the composite material can effectively and conveniently degrade gaseous pollutants such as formaldehyde at room temperature, thereby purifying the air.

Description

technical field [0001] The invention belongs to the technical field of composite material air purification, in particular to a composite material Bi that degrades gaseous pollutants at room temperature 2 o 3 -Co 3 o 4 The preparation method and its application. Background technique [0002] With the development of economy and the improvement of social level, people's material life has also been greatly improved, and people have begun to pay more attention to their own health. In recent years, the home decoration industry has developed rapidly, and indoor volatile organic compound pollution has become increasingly serious. Among the volatile pollutants, formaldehyde is the largest pollution source of indoor home decoration, and is the most harmful pollutant to the human body. According to relevant data analysis and statistics, living in an environment with excessively high concentrations of gaseous pollutants for a long time will cause serious damage to the human body, in...

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): B01J23/843B01D53/86B01D53/44B01D53/72
CPCB01D53/864B01D53/8668B01D53/8687B01D2257/7022B01D2257/704B01D2257/708B01D2259/4508B01J23/002B01J23/8437
Inventor 范晓星李林丽成祥祥
Owner LIAONING UNIVERSITY
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