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

Piezoelectric catalytic film used in air purifier and preparation method thereof

An air purifier and catalytic membrane technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as complex implementation conditions, and achieve the effect of good piezoelectric catalytic performance

Active Publication Date: 2021-06-04
CHINA UNIV OF GEOSCIENCES (BEIJING)
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There have been many studies using photocatalysis to degrade organic pollutants. It has been proved to be an effective technology, but it requires additional light source preparation and effective light contact area, and the implementation conditions are relatively complicated.

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
  • Piezoelectric catalytic film used in air purifier and preparation method thereof
  • Piezoelectric catalytic film used in air purifier and preparation method thereof
  • Piezoelectric catalytic film used in air purifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Preparation and Power Generation Performance of Piezoelectric Catalytic Film

[0028] Attached below figure 1 Embodiments of the present invention are further described:

[0029] First prepare the precursor mixed solution: weigh 0.0204~0.1111g of carbon black (or graphene or carbon nanotubes) and 1g of polyvinylidene fluoride-hexafluoropropylene particles into 5-10ml of acetone, dissolve and disperse at room temperature for 6 hours, to obtain the spinning solution; weigh 0.0204~0.1111g carbon black (or graphene or carbon nanotubes) and 1g polyvinylidene fluoride-hexafluoropropylene particles into 10-20ml acetone, dissolve at room temperature, add 1 -3ml of water to obtain a phase-separated spray solution.

[0030] Porous membrane preparation on fabrics by electrospinning or phase-separation spray coating.

[0031] Then stand at room temperature for 24 hours to obtain a porous polyvinylidene fluoride-hexafluoropropylene composite membrane;

[0032] The comp...

Embodiment 2

[0033] Embodiment 2 Piezoelectric catalytic membrane catalytic performance

[0034] Attached below figure 2 Embodiments of the present invention are further described:

[0035] Prepare porous polyvinylidene fluoride-hexafluoropropylene composite films (3, 5, 8wt%) with different carbon black contents on commercial filter screens of the same area. The commercial filter screen has only filtering function and no catalytic function. After the ethylene-hexafluoropropylene composite porous piezoelectric catalytic membrane, the effects of carbon black content and wind force on the removal rate of indoor organic pollutants were tested. Table 1 shows the removal effects of different carbon black contents and wind power on formaldehyde, benzene, and CO. The test conditions were 30 flat indoor environments, and the purification was performed for 1 hour.

[0036] Table 1 The removal effect of different carbon black contents and wind power on formaldehyde, benzene and CO

[0037]

...

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 diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of air purification, and discloses a piezoelectric catalytic membrane used in an air purifier, comprising a piezoelectric polymer and a carbon material used as a piezoelectric polymer electrode, and its preparation method is to make polyvinylidene fluoride ‑Hexafluoropropylene is mixed with one or more of carbon black, graphene, and carbon nanotubes to prepare a precursor solution, and to prepare polyvinylidene fluoride‑hexafluoro with a high voltage phase by electrospinning or phase separation spraying Propylene is porous and thin, and it is loaded on the filter element of a commercial air purifier. The airflow disturbance in the air purifier makes the polyvinylidene fluoride-hexafluoropropylene porous composite membrane vibrate, and produces piezoelectric catalytic function, which makes it efficiently remove indoor volatile organic matter.

Description

technical field [0001] The invention belongs to the field of indoor air purification and provides a piezoelectric catalytic film used in an air purifier and a preparation method thereof. Background technique [0002] There are many pollutants indoors, including particulate matter, gaseous pollutants, microorganisms and hydrocarbons (toluene, xylene, formaldehyde and other organic components), among which formaldehyde is one of the most common pollutants in indoor air. These pollutants affect health and even cause cancer. Therefore, it is imminent to remove PM, microorganisms and formaldehyde from indoor air. [0003] At present, methods such as biological treatment, adsorption, photocatalysis, plasma, and thermal catalytic oxidation have been widely used for treatment, but there are many limitations. Adsorption technology is limited by the capacity of the adsorbent; photocatalytic oxidation requires additional light sources and effective irradiation; plasma technology is c...

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): B01J31/06B01J35/10B01J37/02B01D53/32B01D53/44B01D53/86
CPCB01D53/32B01D53/44B01D53/86B01D53/8687B01D2258/06B01J31/06B01J35/0033B01J35/065B01J35/10B01J37/0215Y02A50/20
Inventor 佟望舒张以河柴梦楠安琪
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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