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Composite photocatalytic material with efficient photocatalytic activity and preparation method thereof

A technology of composite photocatalysis and photocatalytic activity, which is applied in the field of composite photocatalytic materials and its preparation, can solve the problems of poor photocatalytic activity and low pollution degradation efficiency, and achieve simple operation, reasonable process design, and improved utilization of visible light Effect

Active Publication Date: 2020-05-05
乐清市风杰电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nowadays, photocatalytic technology is mostly used in environmental cleaning, wastewater treatment and other fields, but the existing photocatalysts have a high utilization rate of sunlight, poor photocatalytic activity, and low pollution degradation efficiency, which brings us great inconvenience.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] S1: Prepare materials: weigh cadmium nitrate tetrahydrate, thiourea, glutathione, absolute ethanol, ammonia water and tetrabutyl titanate, weigh bismuth nitrate pentahydrate, silver nitrate, ethylene glycol, sodium hydrogen phosphate, Melamine, melamine, carbon fiber and sodium phosphate, spare;

[0047] S2: Preparation of the first catalytic material: Take bismuth nitrate pentahydrate and silver nitrate, dissolve them in ethylene glycol, stir for 20 minutes, then add sodium hydrogen phosphate, continue stirring for 30 minutes, and keep them in an oil bath with a temperature of 120°C , the holding time is 3 hours, filtering, washing with ion water and ethanol alternately twice, and then drying in a drying oven at a drying temperature of 70°C and a drying time of 9 hours to obtain the first catalytic material;

[0048] S3: Preparation of the second catalytic material:

[0049] Take cadmium nitrate tetrahydrate, thiourea, and glutathione, dissolve them in distilled water...

Embodiment 2

[0057] S1: Prepare materials: weigh cadmium nitrate tetrahydrate, thiourea, glutathione, absolute ethanol, ammonia water and tetrabutyl titanate, weigh bismuth nitrate pentahydrate, silver nitrate, ethylene glycol, sodium hydrogen phosphate, Melamine, melamine, carbon fiber and sodium phosphate, spare;

[0058] S2: Preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve them in ethylene glycol, stir for 25 minutes, then add sodium hydrogen phosphate, continue stirring for 35 minutes, and place in an oil bath to keep warm, the temperature of the oil bath is 125°C , holding time is 2.5h, filtering, washing with ion water and ethanol alternately twice, and then drying in a drying oven at a drying temperature of 75°C and a drying time of 8.5h to obtain the first catalytic material;

[0059] S3: Preparation of the second catalytic material:

[0060] Take cadmium nitrate tetrahydrate, thiourea, and glutathione, dissolve them in di...

Embodiment 3

[0068] S1: Prepare materials: weigh cadmium nitrate tetrahydrate, thiourea, glutathione, absolute ethanol, ammonia water and tetrabutyl titanate, weigh bismuth nitrate pentahydrate, silver nitrate, ethylene glycol, sodium hydrogen phosphate, Melamine, melamine, carbon fiber and sodium phosphate, spare;

[0069] S2: Preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve them in ethylene glycol, stir for 30 minutes, then add sodium hydrogen phosphate, continue stirring for 40 minutes, and keep them in an oil bath, the temperature of the oil bath is 130°C , holding time is 2h, filtering, washing with deionized water and ethanol alternately for 3 times, and then drying in a drying oven at a drying temperature of 80°C and a drying time of 8h to obtain the first catalytic material;

[0070] S3: Preparation of the second catalytic material:

[0071] Take cadmium nitrate tetrahydrate, thiourea, and glutathione, dissolve them in dis...

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PUM

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Abstract

The invention discloses a composite photocatalytic material with efficient photocatalytic activity and a preparation method thereof. The composite photocatalytic material comprises modified nitrogen carbide, a first catalytic material, a second catalytic material, carbon fibers, sodium phosphate and other components. The modified nitrogen carbide is prepared by using a precursor self-assembly copolymerization modification method, and the adopted raw materials are melamine and melamine thiocyanate. The first catalytic material is an Ag / Ag3PO4 / BiPO4 composite material, the second catalytic material is of a CdS microsphere@TiO2 core-shell structure, the first catalytic material and the second catalytic material have excellent photocatalytic activity and visible light utilization rate, and then the first catalytic material, the second catalytic material and the modified nitrogen carbide are compounded. The photocatalytic material is prepared by compounding the first catalytic material, thesecond catalytic material and the modified nitrogen carbide, so that the visible light utilization rate of the photocatalytic material is effectively improved, and the photocatalytic material is excellent in reaction activity and photocatalytic reaction efficiency and has relatively high practicability.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a composite photocatalytic material with high-efficiency photocatalytic activity and a preparation method thereof. Background technique [0002] Photocatalytic technology is a green technology with important application prospects in the fields of energy and the environment. The principle of photocatalysis is based on the redox ability of photocatalysts under light conditions, so that it can achieve the purpose of purifying pollutants, material synthesis and transformation, etc. . Usually, the photocatalytic oxidation reaction uses semiconductors as catalysts and light as energy to degrade organic matter into carbon dioxide and water. Therefore, photocatalytic technology is regarded as an efficient, safe and environmentally friendly environmental purification technology. [0003] Nowadays, photocatalytic technology is mostly used in environmental cleaning, wastewater treat...

Claims

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Application Information

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IPC IPC(8): B01J27/24C02F1/30C02F101/38C02F101/34
CPCB01J27/24C02F1/30C02F2305/10C02F2101/38C02F2101/34B01J27/186B01J21/063B01J27/04B01J37/031B01J37/10C02F2101/30C02F2101/308B01J35/397B01J35/61B01J35/39Y02W10/37
Inventor 刘奇
Owner 乐清市风杰电子科技有限公司
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