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Optical catalyst capable of magnetic separated and its preparation method

A photocatalyst and magnetic separation technology, applied in catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problems of destroying catalyst structure, photocatalyst pollution, etc., to eliminate interference, stable and safe properties, and better properties. Effect

Inactive Publication Date: 2007-05-02
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the existing technologies fix photocatalysts on the surface of magnetic inorganic particles or inorganic magnetic particles coated with oxides by loading and high-temperature calcination. On the one hand, metal oxides will pollute the photocatalysts; Medium metal oxides are easily dissolved and destroy the catalyst structure, so there are great limitations in use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. Disperse 1 g of magnetic polyethylene polymer microspheres (the inner core is ferric oxide) in alcohol, add 15 mL of tetrabutyl titanate, add 5 mL of concentrated nitric acid, stir vigorously, add dropwise 20 mL of deionized water, and continue Stir vigorously for 2 hours, add 200 mL of deionized water, heat to 90°C-100°C and stir for 48 hours, wash for several times after cooling, and dry at 60-100°C to obtain the desired sample.

Embodiment 2

[0024] Embodiment 2, disperse 1g of magnetic polyethylene polymer microspheres (the inner core is ferric oxide) in alcohol, add 15mL of titanium tetrachloride, add 5mL of concentrated nitric acid, stir vigorously, add dropwise 20mL of deionized water, continue vigorously Stir for 2 hours, add 200 mL of deionized water, heat to 90°C to 100°C and stir for 48 hours, wash for several times after cooling, and dry at 60-100°C to obtain the desired sample.

Embodiment 3

[0025] Example 3. Disperse 1g of magnetic polyethylene polymer microspheres (the inner core is ferric oxide) in alcohol, add 15g of titanyl sulfate, add 5mL of concentrated nitric acid, stir vigorously, add 20mL of deionized water dropwise, and continue vigorously stirring 2h, add 200mL deionized water, heat to 90°C-100°C and stir for 48h, after cooling, wash several times, and dry at 60-100°C to obtain the desired sample. change hydrolysis inhibitor

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PUM

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Abstract

A photocatalyst able to be magnetically separated is prepared from ferromagnetic high-molecular microballs as magnetic carrier and the semiconductor nanoparticles with high photocatalytic activity through sol-gel method for carrying said nanoparticles by said microballs.

Description

technical field [0001] The technical field of the invention is photocatalyst, in particular, it belongs to magnetically separable photocatalyst and its preparation method. Background technique [0002] As we all know, with the development of industry, the problem of environmental pollution has become very serious, and solving the problem of pollution is an important content and task of current scientific research. [0003] Semiconductor photocatalysis technology uses ultraviolet light to irradiate photocatalytically active semiconductor materials to initiate photocatalytic reactions. TiO 2 Photocatalytic material is a semiconductor photocatalytic material that has received extensive attention in recent years. A large number of studies have shown that dyes, surfactants, organic halides, pesticides, oils, cyanides, etc. can be destroyed by TiO 2 Effectively complete photocatalytic degradation, decolorization, detoxification, and mineralization into small inorganic molecules...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J32/00B01J37/02
Inventor 栾勇戴学刚
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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