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Diatom ooze with capability of removing visible light and application thereof

A technology of diatom mud and visible light, applied in applications, other chemical processes, chemicals for biological control, etc., can solve the problems of pollutant degradation and only adsorption of organic pollutants, etc., and achieve the effect of catalytic degradation

Inactive Publication Date: 2018-05-15
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, traditional diatom mud can effectively adsorb organic pollutants by utilizing its porous characteristics, but because diatom mud itself has no function of degrading organic pollutants, it can only adsorb organic pollutants, but cannot enrich pollutants at the same time. Degrade pollutants to achieve complete removal of harmful gases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Nano Ag-Fe 2 o 3 Preparation method: use the method of photoreduction in Fe 2 o 3 Surface modification of silver nanoparticles. First, dissolve a certain amount of silver nitrate in 24mL of ethylene glycol, adjust the quality of silver nitrate, and prepare a concentration of 0.1molL -1 The ethylene glycol solution of silver nitrate is used for later use. 400mgFe 2 o 3 The powder is dispersed in the above solution. In the photochemical reaction apparatus, use a xenon lamp with a main wavelength of 365-720nm and a luminous power of 500W as the sunlight light source for photoreduction. Stir while illuminating. After 15 minutes, take out the reaction solution and repeat the sample. After washing, dry in the oven.

[0026] Nano Ag-WO 3 Preparation method: using photoreduction method in WO 3 Surface modification of silver nanoparticles. First, dissolve a certain amount of silver nitrate in 24mL of ethylene glycol, adjust the quality of silver nitrate, and prepare a ...

Embodiment 2

[0031] Nano Ag-Fe 2 o 3 and nano Ag-WO 3 The preparation method is with embodiment 1.

[0032] Diatom mud ratio:

[0033] 40 parts of 800 mesh diatomite, 15 parts of redispersible latex powder, nano Ag-Fe 2 o 3 10 parts, nano Ag-WO 3 10 parts, 20 parts of bentonite, 20 parts of montmorillonite, 15 parts of light calcium, 1 part of inorganic pigment (iron oxide red), 1 part of dispersant (sodium tripolyphosphate).

[0034] Performance experiment: use a 300W xenon lamp as a visible light source to test the catalytic decomposition efficiency of organic dyes dispersed in water. The organic dye is methylene blue, the concentration is 10mg / L, 6g of this diatom ooze is added to 1L of the solution, and the decomposition rate is 98.5% after 2 hours.

Embodiment 3

[0036] Nano Ag-Fe 2 o 3 and nano Ag-WO 3 The preparation method is with embodiment 1.

[0037] Diatom mud ratio:

[0038] 40 parts of 800 mesh diatomite, 15 parts of redispersible latex powder, nano Ag-Fe 2 o 3 5 parts, nano Ag-WO 3 10 parts, 20 parts of bentonite, 20 parts of montmorillonite, 15 parts of light calcium, 1 part of inorganic pigment (iron oxide red), 1 part of dispersant (sodium tripolyphosphate).

[0039] Performance experiment: use a 300W xenon lamp as a visible light source to test the catalytic decomposition efficiency of organic dyes dispersed in water. The organic dye is methylene blue, the concentration is 10mg / L, 6g of this diatom ooze is added to 1L of the solution, and the decomposition rate is 96.4% after 2 hours.

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Abstract

The invention provides diatom ooze with the capability of removing visible light. The diatom ooze is prepared from the following components in parts by weight: 20-48 parts of diatomite, 3-15 parts ofredispersible latex powder, 5-10 parts of nano Ag-Fe2O3, 5-10 parts of nano Ag-WO3, 10-30 parts of bentonite, 5-30 parts of montmorillonite, 5-20 parts of light calcium, 1-5 parts of inorganic pigmentand 1-3 parts of dispersing agent. The diatom ooze with the capability of removing the visible light has the beneficial effects that the with the characteristic of degrading the visible light is usedas a visible-light catalyst and is added into a porous structure of the diatom ooze, so that the enrichment of the diatom ooze for organic gases is realized; simultaneously, by utilization of the catalytic characteristic of the visible light, the catalytic degradation for the organic gases is realized and the defects of the traditional catalyst are avoided.

Description

technical field [0001] The invention belongs to the field of inorganic materials, and in particular relates to an inorganic porous material containing nano oxides and a method thereof. Background technique [0002] The main component of diatom mud is diatomite, and the chemical composition of diatomite is SiO 2 Mainly, the mineral composition is opal and its variants. The density of diatomite is 1.9~2.3g / cm 3 , the specific surface area is 40~65m 2 / g, pore volume 0.45—0.98m 3 / g, so it is loose, porous and easy to absorb water. The water absorption rate is 2 to 4 times its own volume. Adding water will become diatom mud. [0003] Patent CN106348700A combines diatomite with quartz powder, calcium oxide, sodium benzoate, cellulose and redispersible latex powder to make interior paint; patent CN106220046A combines diatomite 30%-45% with redispersible latex powder 4%-10%, kaolin 10%-15%, cooked rubber powder 3%-5%, cellulose 5%-10%, bentonite 3%-10%, nano-titanium dioxide ...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/72B01D53/00B01J20/14B01J20/30B01D53/02A01N59/16A01P1/00A01P3/00
CPCA01N59/16B01D53/007B01D53/02B01D53/72B01D53/86B01D53/8668B01D2253/106B01D2255/104B01D2255/20738B01D2255/20776B01D2255/65B01D2255/802B01D2257/91B01J20/14
Inventor 刘岗刘杰郑康陈林田兴友
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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