Formaldehyde scavenger and preparation method thereof

A formaldehyde scavenger, a certain amount of technology, applied in the field of preparation of formaldehyde scavenger, can solve the problem of limiting nano-TiO, achieve the effect of improving photocatalytic effect and short reaction cycle

Pending Publication Date: 2020-08-11
尚国龙
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiO 2 The thin film is generally coated on a certain substrate, and then processed at a high temperature above 300 ° C to convert it into a photocatalytically active TiO 2 Nanocrystalline film, and high temperature treatment is not conducive to t

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
  • Formaldehyde scavenger and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Measure 200mL of deionized water, TiO 2 Nano powder 10g, TiO 2 Add the nano powder into deionized water and stir to obtain TiO 2 For colloid, put the above raw materials in a beaker, and add 2g of PVP powder into the beaker at room temperature. Next, 0.1 g of silane coupling agent was added to the colloid, stirred for 1 hour and left to age for 24 hours to obtain a formaldehyde scavenger. It has been determined that the formaldehyde scavenger can remove 1m 3 The concentration is 0.3mg / m 3 The formaldehyde is degraded to 0.03mg / m 3 , The degradation rate can reach 90%.

[0020] Comparative experiment 1: Measure 200mL of deionized water, TiO 2 Nano powder 10g, TiO 2 Add the nano powder into deionized water and stir to obtain TiO 2 Colloid, the above raw materials are placed in a beaker, and 2g of PVP powder is added to the beaker at room temperature to obtain a formaldehyde scavenger. It has been determined that the formaldehyde scavenger can remove 1m 3 The con...

Embodiment 2

[0024] Measure 100mL of deionized water, TiO 2 Nano powder 2g, TiO 2 Add the nano powder into deionized water and stir to obtain TiO 2 For colloid, put the above raw materials in a beaker, and add 1.2g of PVP powder into the beaker at room temperature. Next, 0.2 g of silane coupling agent was added to the colloid, stirred for 0.5 hours, and left to age for 36 hours to obtain a formaldehyde scavenger. It has been determined that the formaldehyde scavenger can remove 1m 3 The concentration is 0.3mg / m 3 The formaldehyde is degraded to 0.06mg / m 3 , The degradation rate can reach 80%.

Embodiment 3

[0026] Measure 100mL of deionized water, TiO 2 Nano powder 2g, TiO 2 Add the nano powder into deionized water and stir to obtain TiO2 For colloid, put the above raw materials in a beaker, and add 1.2g of PVP powder into the beaker at room temperature. Next, 0.2 g of silane coupling agent was added to the colloid, stirred for 2 hours and left to age for 12 hours to obtain a formaldehyde scavenger. It has been determined that the formaldehyde scavenger can remove 1m 3 The concentration is 0.3mg / m 3 The formaldehyde is degraded to 0.07mg / m 3 , the degradation rate can reach 76.6%.

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 TiO2/PVP/silane coupling agent formaldehyde scavenger and a preparation method thereof. The particle size of the TiO2/PVP/silane coupling agent formaldehyde scavenger is 5-7nm, and the TiO2/PVP/silane coupling agent formaldehyde scavenger has high dispersion crystallinity. According to the method, the formaldehyde scavenger with high catalytic performance is prepared by utilizing organic-inorganic hybrid composite modification measures of PVP and a silane coupling agent, and the formaldehyde scavenger prepared by the method is good in visible light photocatalytic performance; the preparation method does not need acid-base neutralization or ethanol synthesis and has the characteristics of simple process, low cost, short preparation period, environmental friendliness and the like. The formaldehyde scavenger can be used in the field of efficient formaldehyde removal under visible light and can also be used for other air purification, environmental protection andthe like and has a good application prospect.

Description

technical field [0001] The invention relates to a preparation method of a formaldehyde scavenger, in particular to a TiO 2 / PVP / silane coupling agent and preparation method thereof. Background technique [0002] There are many types of formaldehyde scavengers, mainly including chemical reaction consuming type and photocatalytic non-consuming type. Photocatalytic non-consumable formaldehyde scavenger based on nanoscale TiO 2 As a representative, it is a photo-semiconductor material with photocatalytic function. Usually TiO 2 The powder is milled, stirred, and dispersed into an aqueous medium to form a stable slurry. The slurry can be coated on the surface of walls, furniture, sofas, ceilings, curtains, etc. Under the action of ultraviolet light, it will produce a strong catalytic degradation function, which can effectively degrade formaldehyde gas in the air; the formaldehyde scavenger can also effectively kill many species of bacteria, and can decompose and harmlessly t...

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): B01J31/38B01J31/06B01J21/06B01D53/86B01D53/72B82Y30/00B82Y40/00
CPCB01J31/38B01J31/069B01J21/063B01J35/004B01J35/0013B01D53/007B01D53/8668B82Y30/00B82Y40/00B01D2257/704
Inventor 尚国龙
Owner 尚国龙
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