Magnetron separating photocatalyst used for dye sewage treatment and preparation method for magnetron separating photocatalyst

Abstract

The invention provides a magnetron separating photocatalyst used for dye sewage treatment and a preparation method for the magnetron separating photocatalyst. The magnetron separating photocatalyst for dye sewage treatment is characterized by comprising magnetic attapulgite, wherein octacarboxylic phthalocyanine aluminum and cobalt or derivatives of octacarboxylic phthalocyanine aluminum and cobalt are loaded on the magnetic attapulgite. The preparation method for the magnetron separating photocatalyst for dye sewage treatment is characterized by comprising: S1, dispersing attapulgite subjected to acid activation treatment in distilled water, adding a FeCl3 solution, a FeCl2 solution and a NaOH solution into the obtained dispersion liquid, and preparing the magnetic attapulgite by virtue of an in-situ synthetic method; and S2, mixing the magnetic attapulgite with octacarboxylic phthalocyanine aluminum and cobalt or derivatives of octacarboxylic phthalocyanine aluminum and cobalt, and preparing the magnetron separating photocatalyst for dye sewage treatment by virtue of an ultrasonic stirring method. The photocatalyst prepared not only has obvious dye degradation effect, but also can be recycled through a magnetic separation technology.

Description

technical field [0001] The invention relates to a controllable magnetic separation photocatalyst for dye sewage treatment and a preparation method thereof. The photocatalyst prepared by the invention not only has obvious dye degradation effect, but also can realize recycling by magnetic separation technology. Background technique [0002] In recent years, with the continuous development of industrial technology, more and more dyes have been used in textiles, plastics, food, pharmaceuticals and other fields, which has led to serious dye sewage pollution problems worldwide. Furthermore, most of the dyes used in the textile industry are toxic and highly carcinogenic. Therefore, how to remove dye pollution from industrial wastewater has become an important and urgent issue. In order to solve this problem, Advanced Oxidation Processes (AOPs) have continuously developed into one of the effective technologies because of their efficient degradation of organic pollutants. Among th...

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Problems solved by technology

However, this photocatalyst also has a fatal shortcoming, because planar macrocyclic compounds tend to aggregate, which will affect the catalytic activity and limit its use [M.Q.Hu, Y.M.Xu, J.C.Zhao, Efficient photosensitized degradation of 4-chlorophenol over immobilized aluminum tetrasulfophthalocyanine in the presence of hydrogen peroxide, Langmuir.20(2004)6302-6307]

On the other hand, because it can be dispersed in aqueous solution, there are also disadvantages in recycling.