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Preparation method for silver iodide-loaded photo-catalytic material

A photocatalytic material, silver iodide technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as phenol environmental pollution, achieve good repeatability, good visible light response performance, high ratio The effect of surface area

Active Publication Date: 2017-07-18
南通青华纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many pollutants discharged by modern industry are difficult to be effectively solved by conventional treatment methods, such as the extensive use of phenol, which has caused serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Firstly, 100mL 0.5mol / L silver nitrate and 100mL 0.5mol / L potassium iodide were added dropwise to 500mL povidone 90 aqueous solution, stirred evenly at 35°C, and then sonicated for 1 hour to obtain the silver iodide complex;

[0019] Then add 0.2kg of povidone 90, 0.2kg of sorbitol, 0.1kg of potassium iodide and 0.2kg of water into the reactor and heat to 50°C, keep stirring until completely dissolved, then add 0.1kg of silver iodide complex, and stir evenly;

[0020] Then add 0.1 kg of 13X molecular sieve to impregnate for 24 hours, filter, wash, and roast the obtained sample at 400° C. for 6 hours to obtain a photocatalytic material loaded with silver iodide.

[0021] When the photocatalytic material loaded with silver iodide prepared in this example was used to catalytically degrade phenol (100 mg / L) in water with visible light, the degradation amount of phenol was 85% within 200 minutes.

Embodiment 2

[0023] First, 100mL of 1mol / L silver nitrate and 100mL of 0.5mol / L potassium iodide were added dropwise to 500mL of fatty alcohol polyoxyethylene ether aqueous solution, stirred evenly at 45°C and then ultrasonically treated for 1 hour to obtain a silver iodide complex. The nonionic surfactant is fatty alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether or hydroxypropyl methylcellulose.

[0024] Then add 0.25kg of fatty alcohol polyoxyethylene ether, 0.2kg of sorbitol, 0.15kg of potassium iodide and 0.25kg of water into the reactor and heat to 50°C, keep stirring until all are dissolved, then add 0.25kg of silver iodide complex, and stir evenly;

[0025] Then add 0.15 kg of 13X molecular sieve for impregnation for 24 hours, filter, wash, and roast the obtained sample at 450° C. for 8 hours to obtain a photocatalytic material loaded with silver iodide.

[0026] When the silver iodide-loaded photocatalytic material prepared in this example was used to catalytically ...

Embodiment 3

[0028] First, 100 mL of 1 mol / L silver nitrate and 100 mL of 1 mol / L potassium iodide were added dropwise to 500 mL of fatty alcohol polyoxyethylene ether aqueous solution, stirred evenly at 45°C, and then ultrasonically treated for 1 hour to obtain a silver iodide complex.

[0029] Then add 0.25kg of fatty alcohol polyoxyethylene ether, 0.2kg of sorbitol, 0.35kg of potassium iodide and 0.5kg of water into the reactor and heat to 50°C, keep stirring until all are dissolved, then add 0.25kg of silver iodide complex, and stir evenly;

[0030] Then add 100g of 13X molecular sieve to impregnate for 24 hours, filter and wash, and roast the obtained sample at 450° C. for 8 hours to obtain a photocatalytic material loaded with silver iodide.

[0031] When the silver iodide-loaded photocatalytic material prepared in this example was used to catalytically degrade phenol (100 mg / L) in water with visible light, the degradation amount of phenol was 96.5% within 200 minutes.

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PUM

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Abstract

The invention discloses a preparation method for a silver iodide-loaded photo-catalytic material. The photo-catalytic material has high specific surface area and excellent visible-light response property. The preparation method comprises the following steps: a) dropwise adding silver nitrate and iodine compound into a nonionic surfactant solution, stirring under light-shielding state and ultrasonically treating, thereby acquiring a nanometer silver iodide complex; b) adding nonionic surfactant, cosolvent, solvent and water into a reactor, heating to 45-60 DEG C, stirring till fully dissolving, and then adding the nanometer silver iodide complex and uniformly stirring; and c) adding a molecular sieve, dipping for 6-24h and then filtering, washing and roasting an acquired sample for 4-8h at 350-450 DEG C, thereby acquiring the silver iodide-loaded photo-catalytic material.

Description

technical field [0001] The invention relates to a preparation method of a photocatalytic material, in particular to a preparation method of a photocatalytic material loaded with silver iodide. Background technique [0002] With the continuous development of today's society, problems such as energy shortage and environmental pollution are becoming more and more serious, which directly restrict the sustainable development of human society. How to use an efficient means to solve these problems has become a top priority. As we all know, solar energy is an inexhaustible energy source. If solar energy can be fully utilized, problems such as energy shortage and environmental pollution will be greatly alleviated. Many pollutants discharged by modern industries are difficult to be effectively solved by conventional treatment methods, such as the extensive use of phenol, which has caused serious environmental pollution. Studies have shown that these chemical pollutants can be effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/08C02F1/30C02F101/34
CPCB01J27/08C02F1/30C02F2101/345
Inventor 吴慧斌
Owner 南通青华纳米材料有限公司
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