Three-dimensional flowered composite photocatalyst for sewage treatment and preparation method

A three-dimensional flower-like, sewage treatment technology, applied in catalyst activation/preparation, light water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low photocatalytic activity, limited absorption range, small specific surface area, etc. , to achieve high photocatalytic activity, improve catalytic effect, and increase the effect of specific surface area

Inactive Publication Date: 2018-06-08
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at defects such as small specific surface area, low light utilization rate, limited range of visible light absorption, and low photocatalytic activity of molybdenum disulfide photocatalysts widely used at present, the present invention propo

Method used

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  • Three-dimensional flowered composite photocatalyst for sewage treatment and preparation method

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Example Embodiment

[0029] Example 1

[0030] (1) Dissolve sodium carbonate in water, freeze into ice and crush to form ice blossoms, then add soluble calcium salt, stir to dissolve, add additives, heat in a constant temperature water bath, stir for a certain time, filter, and use distilled water and absolute ethanol Washing, drying in an oven to obtain micron-scale flower-like calcium carbonate crystals; the temperature of the constant temperature water bath is 30°C; the reaction time is 70min; the drying temperature of the oven is 80°C; each raw material is calculated by weight: 30 parts of soluble calcium salt, 25 parts of sodium carbonate, 10 parts of additives, 35 parts of water; soluble calcium salt is calcium chloride; additive is citric acid;

[0031] (2) Put the flower-shaped calcium carbonate crystal and molybdenum disulfide target obtained in step (1) into a vacuum chamber, turn on the pulsed laser, and focus the laser beam on the molybdenum disulfide target through the lens and optical win...

Example Embodiment

[0033] Example 2

[0034] (1) Dissolve sodium carbonate in water, freeze into ice and crush to form ice blossoms, then add soluble calcium salt, stir to dissolve, add additives, heat in a constant temperature water bath, stir for a certain time, filter, and use distilled water and absolute ethanol Washing and drying in an oven to obtain micron-scale flower-like calcium carbonate crystals; the temperature of the constant temperature water bath is 25°C; the reaction time is 80min; the drying temperature of the oven is 70°C; each raw material is calculated by weight: 25 parts of soluble calcium salt, 22 parts of sodium carbonate, 8 parts of additives, 45 parts of water; the soluble calcium salt is calcium acetate; the additive is tartaric acid;

[0035] (2) Put the flower-shaped calcium carbonate crystal and molybdenum disulfide target obtained in step (1) into a vacuum chamber, turn on the pulsed laser, and focus the laser beam on the molybdenum disulfide target through the lens and ...

Example Embodiment

[0037] Example 3

[0038] (1) Dissolve sodium carbonate in water, freeze into ice and crush to form ice blossoms, then add soluble calcium salt, stir to dissolve, add additives, heat in a constant temperature water bath, stir for a certain time, filter, and use distilled water and absolute ethanol Washing and drying in an oven to obtain micron-scale flower-like calcium carbonate crystals; the temperature of the constant temperature water bath is 35°C; the reaction time is 60min; the drying temperature of the oven is 90°C; each raw material is calculated by weight: 35 parts of soluble calcium salt, 28 parts of sodium carbonate, 12 parts of additives, 2 parts of water; the soluble calcium salt is calcium sulfate; the additives are succinic acid and malic acid;

[0039] (2) Put the flower-shaped calcium carbonate crystal and molybdenum disulfide target obtained in step (1) into a vacuum chamber, turn on the pulsed laser, and focus the laser beam on the molybdenum disulfide target thro...

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Abstract

The invention provides a three-dimensional flowered composite photocatalyst for sewage treatment and a preparation method. The preparation method comprises the following steps: dissolving sodium carbonate into water, freezing to form ice and crushing to form ice flowers; then adding soluble calcium salts, stirring and dissolving; adding an additive, and putting the additive into a thermostatic waterbath for heating to obtain a micron flowered calcium carbonate crystal; putting a molybdenum disulfide target material into a vacuum chamber, opening a pulsed laser and enabling a laser beam to be focused on the molybdenum disulfide target material by a lens and an optical window piece; evaporating to obtain a target material plume by instant melting of high energy of the laser beam, and depositing the target material plume on the micron flowered calcium carbonate crystal to obtain the three-dimensional flowered composite photocatalyst. The method has the advantages that by forming a uniquethree-dimensional structure, specific surface area of the composite photocatalyst is remarkably increased, the utilization rate of light energy is improved, as well as high photocatalytic activity andhigh degradation rate of pollutants are realized; in addition, the preparation method has the advantages of simple preparation process, high productivity, low preparation cost, capability of realizing large-scale production and wide application in the field of sewage treatment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to the preparation of photocatalysts, in particular to a three-dimensional flower-shaped composite photocatalyst for sewage treatment and a preparation method thereof. Background technique [0002] With the development of social economy and urbanization, the shortage of water resources and the pollution of water environment have become global problems in this century and are becoming more and more serious. The resulting water crisis has also become an important factor restricting the sustainable development of my country's social economy. In recent years, the main methods for the application of catalysts in sewage treatment in my country are photocatalyst method, Fenton method reagent method, heterogeneous catalytic oxidation, electrocatalytic sewage treatment, enzyme catalytic sewage treatment, etc. Among them, photocatalytic oxidation is a special photosensitive oxidation using n-...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01J37/34B01J35/10C02F1/30
CPCB01J27/232B01J35/004B01J35/1019B01J37/349C02F1/30C02F2305/10
Inventor 陈庆司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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