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Diatomite loaded nitrogen-doped nano titanium dioxide environment functional material

A nano-titanium dioxide and functional material technology, applied in the field of materials, can solve the problems of fragile finished products, easy agglomeration, low utilization of sunlight, etc., and achieve the effect of strong bending resistance and increasing contact area.

Inactive Publication Date: 2019-03-19
NANJING COLLEGE OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, nano-TiO 2 There are two defects: one is that it can only be excited by ultraviolet light, the utilization rate of sunlight is low, generally less than 5%, and the photogenerated electrons and holes are easy to recombine; the other is that the dispersion of nanoparticles is poor and easy to agglomerate
[0005] At present, TiO is generally 2 Made into environmental functional materials, but the spectral response range of these environmental functional materials is still narrow
In addition, when making environmental functional materials, TiO 2 Ions are easy to agglomerate and affect TiO 2 photocatalytic efficiency, and the finished product is fragile, which is not conducive to use

Method used

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  • Diatomite loaded nitrogen-doped nano titanium dioxide environment functional material
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  • Diatomite loaded nitrogen-doped nano titanium dioxide environment functional material

Examples

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Effect test

Embodiment 1

[0039] 1# Nitrogen-doped nano-TiO supported on diatomite 2 Environmental functional materials, in parts by weight, its raw materials are composed of: 35 parts of water, diatomaceous earth-loaded nitrogen-doped nano-TiO 2 50 parts, 7 parts of plant debris made from Ginkgo biloba, 3 parts of glutinous rice glue powder, 2 parts of sodium carboxymethylcellulose, 3 parts of dispersant, the dispersant specifically adopts Sokalan CP5 acrylic acid-maleic acid copolymer of BASF sodium salt.

[0040] Nitrogen-doped nano-TiO supported on diatomaceous earth 2 Specifically, the following steps are used to make it, please refer to figure 1 :

[0041] First purify diatomaceous earth:

[0042] Use a 325-mesh sieve to sieve diatomite, put the diatomite under the sieve into 60wt% sulfuric acid solution, stir and wash for 2 hours; use 200W power ultrasonic treatment for 1 hour at 25°C, and wash repeatedly with distilled water to neutral; put it in a vacuum drying oven and dry it at 80°C fo...

Embodiment 2

[0052] 2# Nitrogen-doped nano-TiO loaded on diatomite 2 Environmental functional materials, in parts by weight, its raw materials are composed of: 35 parts of water, diatomaceous earth-loaded nitrogen-doped nano-TiO 2 50 parts, 5 parts of plant debris made of ginkgo leaves, 2 parts of fluorescent powder, 3 parts of glutinous rice glue powder, 2 parts of sodium carboxymethyl cellulose, 3 parts of dispersant, the dispersant is specifically acrylic acid-maleic acid copolymer Sodium salt, the phosphor specifically adopts blue-violet phosphor CaAl 2 o 4 :Eu 2+ ,Nd 3+ .

[0053] Nitrogen-doped nano-TiO supported on diatomaceous earth 2 Specifically, the following steps are used to make:

[0054] First purify diatomaceous earth:

[0055] Use a 325-mesh sieve to sieve the diatomite, put the diatomite under the sieve into 60wt% sulfuric acid solution, stir and wash for 2 hours; Properties; put it in a vacuum drying oven and dry it at 80°C for 6 hours, then put it in a muffle f...

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Abstract

The invention discloses a diatomite loaded nitrogen-doped nano titanium dioxide environment functional material which comprises, by mass, 25-35 parts of water, 40-50 parts of diatomite loaded nitrogen-doped nano TiO2, 5-10 parts of plant fragments, 3-5 parts of binder, 2-5 parts of thickener and 3-5 parts of dispersant. The material can expand spectrum responding range of TiO2 to a visible light area, and treatment effect of the material on organic pollutants is improved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a diatomite-loaded nitrogen-doped nano-titanium dioxide environmental functional material. Background technique [0002] With the rapid economic development and the continuous improvement of people's living standards, people's requirements for a healthy, safe and comfortable living environment are becoming more and more urgent. Harmful gases in the living environment are generally dominated by organic pollutants such as benzene, toluene, and formaldehyde. Among them, formaldehyde has been identified by the World Health Organization as a potential strong carcinogen, which seriously endangers people's health. Nano titanium dioxide (TiO 2 ) is a commonly used semiconductor photocatalytic material. Because of its advantages of safety, non-toxicity, high photocatalytic activity, strong oxidation ability, stable photochemical performance and low price, it has broad application in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/39
Inventor 陈和祥张成庆万瑞张君朱宪忠
Owner NANJING COLLEGE OF INFORMATION TECH
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