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A composite photocatalytic material with high photocatalytic activity and its preparation method

A technology of composite photocatalysis and photocatalytic activity, applied in the field of composite photocatalytic materials and their preparation, can solve the problems of poor photocatalytic activity, low pollution degradation efficiency, etc. Effect

Active Publication Date: 2020-12-08
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, thiocyanate, carbon fiber and sodium phosphate, for use;

[0047] S2: Preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve ethylene glycol, stir for 20 min, add sodium hydrogen phosphate, continue stirring for 30 min, place in an oil bath for insulation, and the oil bath temperature is 120 ° C, The holding time is 3h, filtered, washed with deionized water and ethanol alternately twice, and then placed in a drying oven to dry, the drying temperature is 70°C, and the drying time is 9h, to obtain the first catalyst material;

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

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

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, thiocyanate, carbon fiber and sodium phosphate, for use;

[0058] S2: preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve ethylene glycol, stir for 25min, add sodium hydrogen phosphate, continue stirring for 35min, place in an oil bath for insulation, and the oil bath temperature is 125 ℃, The holding time is 2.5h, filtered, washed with deionized water and ethanol alternately twice, and then placed in a drying oven to dry, the drying temperature is 75°C, and the drying time is 8.5h to obtain the first catalyst material;

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

[0060] Take cadmium nitrate tetrahydrate, thiourea, glutathione, dissolve in distilled water, s...

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, thiocyanate, carbon fiber and sodium phosphate, for use;

[0069] S2: the preparation of the first catalytic material: take bismuth nitrate pentahydrate and silver nitrate, dissolve ethylene glycol, stir for 30min, add sodium hydrogen phosphate, continue stirring for 40min, place in an oil bath for insulation, and the oil bath temperature is 130 ℃, The holding time is 2h, filtered, washed with deionized water and ethanol alternately for 3 times, and then placed in a drying oven to dry, the drying temperature is 80°C, and the drying time is 8h to obtain the first catalyst material;

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

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

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PUM

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Abstract

The invention discloses a composite photocatalytic material with high-efficiency photocatalytic activity and a preparation method thereof. It is prepared by the method of self-assembly and copolymerization modification of precursors. The raw materials used are melamine and thiocyanate; the first catalyst material is Ag / Ag 3 PO 4 / BiPO 4 Composite material, the second catalyst material is CdS microspheres@TiO 2 Core-shell structure, the first catalytic material and the second catalytic material both have excellent photocatalytic activity and visible light utilization rate, and then the first catalytic material, the second catalytic material and the modified carbon nitrogen are compounded; The photocatalytic material is prepared by compounding the material, the second catalytic material and the modified carbonized nitrogen, which effectively improves the visible light utilization rate of the photocatalytic material, and the photocatalytic material has excellent reactivity and photocatalytic reaction efficiency, and has high practicability.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a composite photocatalytic material with efficient photocatalytic activity and a preparation method thereof. Background technique [0002] Photocatalysis technology is a green technology with important application prospects in the fields of energy and environment. The principle of photocatalysis is based on the redox ability of photocatalysts under the condition of light, so as to achieve the purpose of purifying pollutants, material synthesis and transformation. . 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 and safe environment-friendly environmental purification technology. [0003] Nowadays, photocatalytic technology is mostly used in environmental cleaning, wastewater treatment and other field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/38C02F101/34
CPCB01J27/24B01J35/004C02F1/30C02F2305/10C02F2101/38C02F2101/34B01J35/008B01J27/186B01J21/063B01J27/04B01J37/031B01J37/10B01J35/1004C02F2101/30C02F2101/308Y02W10/37
Inventor 刘奇
Owner 乐清市风杰电子科技有限公司
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