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Preparation method of porous photocatalyst for wastewater treatment

A photocatalyst and wastewater treatment technology, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, light water/sewage treatment, etc., can solve the problems of limited catalytic efficiency of titanium dioxide, improve wastewater treatment capacity, and improve photocatalytic effect , The effect of photocatalytic efficiency improvement

Active Publication Date: 2019-06-14
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single titanium dioxide is not suitable for direct use, and the catalytic efficiency of its single titanium dioxide is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A porous photocatalyst for wastewater treatment, prepared by the following steps:

[0032] Step 1. In parts by weight, add 80 parts of titanium dioxide, 25 parts of barium oxide, 1 part of lithium manganate, and 6 parts of sodium dodecylbenzenesulfonate into 100 parts of acetone, stir and ultrasonically disperse for 1 hour to form Mixture A, standby;

[0033] Step 2, in parts by weight, add 50 parts of bisphenol A type epoxy resin, 3 parts of 1,2-diaminocyclohexane, 1 part of 1-(3-aminopropyl) imidazole to 100 parts of liquid polyethylene In diol, stir and disperse evenly at 40°C to form mixture B, set aside;

[0034] Step 3. In parts by weight, add 40 parts of the mixture A in step 1 to 60 parts of the mixture B in step 2, stir and ultrasonically disperse at 40°C for 2 hours, and then raise the temperature to 75 ℃, hold for 60 minutes;

[0035] Step 4. Based on the total weight of the mixture A and mixture B added in the step 3 as 100 parts, slowly add 10 parts of t...

Embodiment 2

[0039] A porous photocatalyst for wastewater treatment, prepared by the following steps:

[0040] Step 1. In parts by weight, add 65 parts of titanium dioxide, 25 parts of barium oxide, 3 parts of lithium manganate, and 10 parts of sodium dodecylbenzenesulfonate into 150 parts of acetone, stir and ultrasonically disperse for 2 hours to form Mixture A, standby;

[0041] Step 2, in parts by weight, add 80 parts of bisphenol A type epoxy resin, 3 parts of 1,2-diaminocyclohexane, 1 part of 1-(3-aminopropyl) imidazole to 100 parts of liquid polyethylene In diol, stir and disperse evenly at 40°C to form mixture B, set aside;

[0042]Step 3. In parts by weight, add 30 parts of the mixture A in step 1 to 70 parts of the mixture B in step 2, stir and ultrasonically disperse at 40°C for 2 hours, and then raise the temperature to 75 ℃, hold for 60 minutes;

[0043] Step 4. Based on the total weight of the mixture A and mixture B added in the step 3 as 100 parts, slowly add 7 parts of ...

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Abstract

The invention provides a preparation method of a porous photocatalyst for wastewater treatment. The porous photocatalyst is prepared by adopting a two-step method. According to the invention, a three-component catalytic system formed by compounding titanium dioxide, barium oxide and lithium manganate is adopted, wherein the ratio of the three components is controlled to be (60-80):(25-40):(1-5). 1,2-diaminocyclohexane and 1-(3-aminopropyl)-imidazole are compounded as a curing component. The porous photocatalyst prepared by the two-step method disclosed by the invention has greatly improved photocatalytic efficiency in wastewater, the process is simple, the cost is low, and the porous photocatalyst is suitable for wastewater treatment in various environments and has a wide market application prospect.

Description

technical field [0001] The invention relates to a photocatalyst for wastewater treatment, in particular to a method for preparing a porous photocatalyst for wastewater treatment. Background technique [0002] The commonly used treatment methods for sewage in reality include mechanical separation, physical method, chemical method, physicochemical method, biological method, etc. In the prior art, a ship hull that can float on the water surface is disclosed, which can remove oil and organic pollution. substances are removed efficiently. For example, the mechanical separation method, the Chinese patent application No. 2013102192711 discloses a continuous liftable crawler fast oil suction device, which realizes the lifting of the crawler through a lever system to ensure sufficient contact between the oil absorbing material and the liquid surface, but its It is more inconvenient in the actual operation process. At the same time, the device does not achieve real oil-water separat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38C02F1/30C02F101/36C02F101/38
Inventor 苏彩丽
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER