Titanium-based composite catalyst gauze capable of high-effectively degrading formaldehyde and preparation method thereof

A composite catalytic net and catalytic net technology, applied in chemical instruments and methods, separation methods, physical/chemical process catalysts, etc., can solve the problems of low degradation efficiency, low absorption efficiency, difficult formaldehyde degradation, etc., and achieve good mechanical properties, The effect of prolonging the single use time and increasing the specific surface area

Active Publication Date: 2020-03-31
湖南省尤利威科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that formaldehyde pollution cannot be completely avoided in the existing indoor furniture and decoration process, although the existing formaldehyde adsorption materials such as diatomaceous earth, activated alumina, activated carbon, etc. can achieve the purpose of absorbing formaldehyde, the absorption efficiency is low, and Due to the limitation of its own shape, its use is limited. On the other hand, the existing formaldehyde adsorption materials have low degradation efficiency after absorbing formaldehyde, and it is difficult to effectively and quickly degrade formaldehyde. Titanium-based composite catalytic net and preparation method thereof

Method used

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  • Titanium-based composite catalyst gauze capable of high-effectively degrading formaldehyde and preparation method thereof
  • Titanium-based composite catalyst gauze capable of high-effectively degrading formaldehyde and preparation method thereof
  • Titanium-based composite catalyst gauze capable of high-effectively degrading formaldehyde and preparation method thereof

Examples

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Effect test

Embodiment 1

[0062] A preparation method of a titanium-based composite catalytic net for efficiently degrading formaldehyde, the method comprising the following steps:

[0063] 1) Use 300-mesh titanium mesh as the substrate for pretreatment, sequentially use mixed acid containing 0.2wt% hydrofluoric acid and 15wt% nitric acid, acetone, ethanol and water to ultrasonically clean the titanium mesh for 5 minutes, and use it as an anode after pretreatment, and place In 0.5wt% hydrofluoric acid aqueous solution, with graphite as the cathode, the titanium mesh was anodized, the anodizing voltage was 20V, the anodizing temperature was 60°C, the anodizing time was 60min, and titanium dioxide nanotubes were grown on the surface of the titanium mesh array, forming a carrier;

[0064] 2) Prepare a pre-solution by dissolving sodium lauryl sulfate in water, adjust the pH of the pre-solution to 3 with glacial acetic acid, preheat to 60°C and keep it for 20 minutes, then add potassium permanganate to prep...

Embodiment 2

[0067] A preparation method of a titanium-based composite catalytic net for efficiently degrading formaldehyde, the method comprising the following steps:

[0068] 1) Use 400-mesh titanium mesh as the substrate for pretreatment, sequentially use mixed acid containing 0.3wt% hydrofluoric acid and 22wt% nitric acid, acetone, ethanol and water to ultrasonically clean the titanium mesh for 5 minutes, and use it as an anode after pretreatment, and place In 1.0wt% hydrofluoric acid aqueous solution, with graphite as the cathode, the titanium mesh was anodized, the anodizing voltage was 60V, the anodizing temperature was 25°C, and the anodizing time was 30min, and titanium dioxide nanotubes were grown on the surface of the titanium mesh array, forming a carrier;

[0069] 2) Dissolve ammonium lauryl sulfate and potassium lauryl sulfate at a molar ratio of 1:1 in water to prepare a pre-solution, and use sulfuric acid to adjust the pH of the pre-solution to 1, preheat to 90°C and keep i...

Embodiment 3

[0072] A preparation method of a titanium-based composite catalytic net for efficiently degrading formaldehyde, the method comprising the following steps:

[0073] 1) Use 300-mesh titanium mesh as the substrate for pretreatment, sequentially use mixed acid containing 0.3wt% hydrofluoric acid and 20wt% nitric acid, acetone, ethanol and water to ultrasonically clean the titanium mesh for 5 minutes, and use it as an anode after pretreatment In a 1.0wt% hydrofluoric acid ethanol solution, graphite is used as a cathode, and the titanium mesh is anodized. The anodizing voltage is 25V, the anodizing temperature is 30°C, and the anodizing time is 180min. Titanium dioxide nanometers are grown on the surface of the titanium mesh. an array of tubes, forming a carrier;

[0074] 2) Prepare a pre-solution by dissolving sodium lauryl sulfate in water, adjust the pH of the pre-solution to 3 with glacial acetic acid, preheat to 65°C and keep it for 15 minutes, then add sodium permanganate and ...

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Abstract

The invention relates to the field of catalytic materials and especially relates to titanium-based composite catalyst gauze capable of high-effectively degrading formaldehyde and a preparation methodthereof. The base body of the titanium-based composite catalyst gauze is titanium gauze, wherein TiO2 nanoarray grows on the surface of the titanium gauze. A manganese based catalytic component is supported on the surfaces of the titanium gauze and TiO2 nanoarray. The titanium-based composite catalyst gauze has a netlike structure and great mechanical performance, is better in adaptability, can bedirectly used for manufacturing a composite filter screen in an air purifier, allows non-photo catalytic degradation of formaldehyde, can achieve self-regeneration, is prolonged in one-time working period, and has great electric-conductivity and can be electrified for self-heating regeneration further. The composite catalyst gauze also can be integrated with a one-key regeneration function when being assembled into equipment.

Description

technical field [0001] The invention relates to the field of catalytic materials, in particular to a titanium-based composite catalytic net for efficiently degrading formaldehyde and a preparation method thereof. Background technique [0002] Indoor wood, boards, furniture and wall surface coatings basically contain formaldehyde, and it has been found through research that the release period of formaldehyde is usually three to fifteen years. Even after a long time of decoration, many appliances will continue to Release formaldehyde. The No. 153 Bulletin released by the World Health Organization in 2004 determined that formaldehyde is a carcinogenic and teratogenic substance. Formaldehyde is also a recognized source of allergies and is one of the risk factors for childhood leukemia. According to medical journals and related literature reports, the harm of indoor formaldehyde to human health can be summarized as stimulation, toxicity and carcinogenicity. [0003] However, e...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J35/04B01D53/86B01D53/72
CPCB01J23/34B01D53/8668B01D2255/802B01J35/56B01J35/39Y02C20/30
Inventor 张惠斌陈捷任彩戴思雨唐文武张乾坤
Owner 湖南省尤利威科技有限公司
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