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Preparation method of photocatalytic hydrogel particles

A hydrogel and photocatalytic technology, applied in the field of photocatalytic materials, can solve problems such as difficult recycling, achieve low cost, realize recycling, and easy separation and recycling

Pending Publication Date: 2021-12-03
江苏奥净嘉环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nano titanium dioxide (TiO 2 ) has the advantages of high efficiency, non-toxicity, and stable chemical properties, making it a photocatalyst with large-scale application potential. However, nano-TiO 2 It usually exists in the form of powder, and there are disadvantages such as difficult recycling in its use. In view of this, it is necessary to study a preparation method loaded with nano-titanium dioxide hydrogel particles.

Method used

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  • Preparation method of photocatalytic hydrogel particles
  • Preparation method of photocatalytic hydrogel particles
  • Preparation method of photocatalytic hydrogel particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing photocatalytic hydrogel particles, comprising the following preparation steps:

[0022] S1. Dissolve 4g of nano-titanium dioxide, 1g of graphene oxide and 0.5g of amino polyethylene glycol acrylate in 200mL of water, ultrasonically disperse for 30min, at 40 o C was reacted for 6 hours, left standing and filtered to obtain a graphene oxide composite;

[0023] S2. In the reactor, add 10 g of acrylamide, 0.2 g of N,N-methylenebisacrylamide, 0.01 g of potassium persulfate, 0.1 g of graphene oxide complex and 5 g of deionized water, Mix uniformly under the action of ultrasound to obtain a reaction solution;

[0024] S3, using a syringe to drop the reaction solution into a 25cm long heatable glass tube filled with soybean oil at a rate of every 60s, the temperature of the soybean oil is 80 o C, the product collected at the lower end of the glass tube was washed with water to obtain photocatalytic hydrogel particles.

[0025] The morphology of the pho...

Embodiment 2

[0027] A method for preparing photocatalytic hydrogel particles, comprising the following preparation steps:

[0028] S1. Dissolve 1g of nano-titanium dioxide, 4g of graphene oxide and 8g of aminopolyethylene glycol acrylate in 750mL of water, ultrasonically disperse for 30min, at 40 o C was reacted for 6 hours, left standing and filtered to obtain a graphene oxide composite;

[0029] S2. In the reactor, add 10 g of acrylamide, 2 g of N,N-methylenebisacrylamide, 0.01 g of ammonium persulfate, 1 g of graphene oxide complex and 20 g of deionized water, and Under action, mix uniformly to obtain reaction solution;

[0030] S3. Use a syringe to drop the reaction solution into a 50cm long heatable glass tube filled with soybean oil at a rate of every 30s. The temperature of the soybean oil is 95 o C, the product collected at the lower end of the glass tube was washed with water to obtain photocatalytic hydrogel particles.

Embodiment 3

[0032] A method for preparing photocatalytic hydrogel particles, comprising the following preparation steps:

[0033] S1. Dissolve 2g of nano-titanium dioxide, 2g of graphene oxide and 2g of aminopolyethylene glycol acrylate in 500mL of water, ultrasonically disperse for 30min, and dissolve at 40 o C was reacted for 6 hours, left standing and filtered to obtain a graphene oxide composite;

[0034] S2. In the reactor, add 10 g of acrylamide, 0.5 g of N,N-methylenebisacrylamide, 0.02 g of V40, 0.5 g of graphene oxide composite and 15 g of deionized water, and Under action, mix uniformly to obtain reaction solution;

[0035] S3. Use a syringe to drop the reaction liquid into a 30cm long heatable glass tube filled with soybean oil at a rate of every 40s. The temperature of the soybean oil is 90 o C, the product collected at the lower end of the glass tube was washed with water to obtain photocatalytic hydrogel particles.

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Abstract

The invention discloses a preparation method of photocatalytic hydrogel particles, which is characterized in that a polymeric monomer, a TiO2-containing polymerizable compound and other reaction solutions are polymerized in an oil phase in a settling process to obtain the photocatalytic hydrogel particles. The preparation process is simple, and the prepared hydrogel particles contain nano titanium dioxide and can be used as a photocatalytic material for photocatalytic degradation of pollutants in water.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing photocatalytic hydrogel particles. Background technique [0002] The water pollution problem caused by industrial wastewater discharge has attracted global attention. Among them, industries such as papermaking, leather, textiles, plastics, cosmetics, and electroplating industries will generate a large amount of industrial wastewater, and the main pollutants in these industrial wastewater are organic compounds. In order to remove these pollutants, researchers have studied a series of methods and applied them to the treatment of industrial wastewater to reduce its harmful impact on the water environment. At present, more effective methods include membrane filtration, chemical oxidation biological method and adsorption method, etc., but these methods are not completely degraded. [0003] Photocatalysis technology is a means developed in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J31/06
CPCB01J31/06B01J31/38B01J35/39
Inventor 郭赞如蒋勇
Owner 江苏奥净嘉环保科技有限公司
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