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Diatom mud paint with visible light catalytic capability

A technology of diatom mud coating and catalytic ability, which is applied in the direction of physical/chemical process catalysts, household appliances, and other household appliances. problems, to achieve the effect of low cost, no heavy metal safety, and strong photocatalytic activity

Pending Publication Date: 2019-05-24
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diatom mud coating is porous and can absorb toxic substances such as formaldehyde and toluene indoors. However, since diatom mud itself cannot degrade toxic substances such as formaldehyde and toluene, it is easy to absorb and saturate toxic substances. As the environment changes, toxic substances escape slowly. , causing damage to the human body
Ordinary diatom mud coatings with photocatalytic ability are added with photocatalysts such as nano-titanium dioxide. Nano-titanium dioxide has photocatalytic ability only under ultraviolet light, but there is very little indoor ultraviolet light, so it is difficult to photocatalytically degrade toxic substances such as formaldehyde and toluene.
Therefore, neither the diatom mud coating nor the ordinary diatom mud coating with photocatalytic properties can effectively remove toxic substances such as formaldehyde and toluene.

Method used

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  • Diatom mud paint with visible light catalytic capability
  • Diatom mud paint with visible light catalytic capability
  • Diatom mud paint with visible light catalytic capability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The diatom mud coating with visible light catalytic ability contains the following raw materials in parts by mass: 20 parts of diatomite, 15 parts of heavy calcium carbonate, 6 parts of ash calcium powder, 10 parts of kaolin, 2.0 parts of Wacker rubber powder, hydroxypropyl 1.5 parts of methyl cellulose (HPMC), 0 parts of lignin, 3 parts of inorganic pigments, nano g-C 3 N 4 3 parts; using the conventional preparation method, each raw material is added in sequence and then mechanically mixed directly to obtain the diatom mud coating.

[0020] Among them, nano g-C 3 N 4 By thermal polymerization of urea in a muffle furnace at 550°C for 4 hours, the obtained pale yellow g-C 3 N 4 It is mixed with deionized water according to 100g:200ml, and ball milled at 300r / min for 9h, with a band gap of 2.7eV, an average particle size of 80nm, and a specific surface area of ​​34.5m 2 / g.

Embodiment 2

[0022] The diatom mud coating with visible light catalytic ability contains the following raw materials in mass parts: 50 parts of diatomite, 5 parts of heavy calcium carbonate, 19 parts of ash calcium, 16 parts of kaolin, 0.5 parts of Wacker powder, hydroxypropyl methyl Base cellulose (HPMC) 0.5 parts, lignin 2.0 parts, inorganic pigments 5.0 parts, nano g-C 3 N 4 5 parts; using the conventional preparation method, each raw material is added in sequence and then mechanically mixed directly to obtain the diatom mud coating.

[0023] Among them, nano g-C 3 N 4 By thermal polymerization of urea in a muffle furnace at 550°C for 4 hours, the obtained pale yellow g-C 3 N 4 It is mixed with deionized water according to 100g:200ml, and ball milled at 300r / min for 9h, with a band gap of 2.7eV, an average particle size of 80nm, and a specific surface area of ​​34.5m 2 / g.

Embodiment 3

[0025] The diatom mud coating with visible light catalytic ability contains the following raw materials in parts by mass: 25 parts of diatomite, 20 parts of heavy calcium carbonate, 20 parts of ash calcium, 20 parts of kaolin, 1.5 parts of Wacker powder, hydroxypropyl methyl Base cellulose (HPMC) 1.0 parts, wood cellulose 1.0 parts, inorganic pigment 0 parts, nano g-C 3 N 4 10 parts; using the conventional preparation method, each raw material is added in sequence and then mechanically mixed directly to obtain the diatom mud coating.

[0026] Among them, nano g-C 3 N 4 By thermal polymerization of urea in a muffle furnace at 550°C for 4 hours, the obtained pale yellow g-C 3 N 4 It is mixed with deionized water according to 100g:200ml, and ball milled at 300r / min for 9h, with a band gap of 2.7eV, an average particle size of 80nm, and a specific surface area of ​​34.5m 2 / g.

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Abstract

The invention relates to the technical field of paint product, in particular to diatom mud paint with visible light catalytic capability. The diatom mud paint is characterized in that nano g-C3N4 withthe visible light catalytic capability is taken as a photocatalyst which is added to a porous structure of the diatom mud paint, indoor visible light is used directly to degrade organic toxic substances adsorbed by diatom mud so that the diatom mud has better purification performance and durability, and toxic substance pollution such as indoor formaldehyde and toluene is reduced.

Description

technical field [0001] The invention relates to the technical field of paint products, in particular to a diatom mud paint with visible light catalytic ability. Background technique [0002] Toxic substances such as formaldehyde and toluene in indoor air will have a serious impact on human health, causing diseases of the respiratory system and nervous system, and even carcinogenic and teratogenic. Diatom mud coating is porous and can absorb toxic substances such as formaldehyde and toluene indoors. However, since diatom mud itself cannot degrade toxic substances such as formaldehyde and toluene, it is easy to absorb and saturate toxic substances. As the environment changes, toxic substances escape slowly. , causing damage to the human body. Ordinary diatom mud coatings with photocatalytic ability are added with photocatalysts such as nano-titanium dioxide, which only have photocatalytic ability under ultraviolet light, but there is very little indoor ultraviolet light, so i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B38/08C04B14/32B01J27/24B01J35/10B01J35/02C01B21/082B82Y30/00B01J35/00
Inventor 徐子珍马韵升刘鹏鹏魏国强张学雷巩向辉胡耀路建李振华姜天凯孙峰晋振东王宗
Owner CHAMBROAD CHEM IND RES INST CO LTD
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