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Thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and preparation method thereof

A technology of metalloporphyrin and visible light, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc. Problems such as application restrictions, to achieve the effect of reducing treatment costs and solving secondary pollution

Inactive Publication Date: 2013-06-05
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of metalloporphyrins in photocatalytic degradation is limited due to the poor solubility of most kinds of metalloporphyrins in water and the difficulty of recycling.

Method used

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  • Thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and preparation method thereof
  • Thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and preparation method thereof
  • Thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and preparation method thereof

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Embodiment Construction

[0016] The preparation method of the temperature-sensitive recyclable metalloporphyrin visible light photodegradation catalyst of the present invention will be described in detail below.

[0017] First, 5,10,15,20-tetra-p-hydroxyphenylporphyrin reacts with zinc acetate to form a porphyrin metal complex. The specific process is as follows:

[0018] Put 10ml of N,N-dimethylformamide (DMF) in a three-necked flask, blow nitrogen gas, and heat to reflux for 15 minutes. Under the protection of nitrogen, 0.001mol of 5,10,15,20-tetra-hydroxyphenylporphyrin and equimolar zinc acetate were added, and reflux was continued in the dark. Monitor once with UV-Vis spectrum at regular intervals until the reaction is complete, remove the nitrogen, cool to room temperature, evaporate most of the solvent under reduced pressure, perform column chromatography with silica gel as the stationary phase and chloroform as the eluent, and collect the second After evaporating most of the solvent, carry o...

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Abstract

The invention relates to technical field of degradation catalysis of pollute substance of waste water, in particular to a thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and a preparation method thereof. An existing metalloporphyrin visible light degradation catalyst is bad in water-solubility and difficult to recycle. According to the thermosensitivity recyclable metalloporphyrin visible light degradation catalyst and the preparation method thereof, the light degradation catalyst is a star-shaped polymer, wherein divalent metal ions of the light degradation catalyst is Zn divalent metal ion, Co divalent metal ion or Fe divalent metal ion, and the molecular weight of the light degradation catalyst is ranged from 2000 to 15000. The preparation method of the thermosensitivity recyclable metalloporphyrin visible light degradation catalyst is an atom transfer radical polymerization method which comprises the following steps of: firstly, reaction between 5, 10, 15, and 20-4-hydroxyphenylacetic acid phenyl group porphyrin and metal acetate and generation of porphyrin metal complex, then, halogenating reaction between the porphyrin metal complex and halide and obtaining of atom transfer radical polymerization initiator, and thirdly atom transfer radical polymerization of N-isopropyl acryamide monomer initiated by the initiator and obtaining of an end product, namely the thermosensitivity recyclable metalloporphyrin visible light degradation catalyst. The prepared catalyst is good in water-solubility, capable of adapting to aqueous medium waste water degradation system, and capable of being recycled completely, simply and without being damaged.

Description

technical field [0001] The invention relates to a temperature-sensitive recyclable metalloporphyrin visible light photodegradation catalyst and a preparation method thereof. Metalloporphyrins such as zinc, cobalt, and iron are prepared as atom transfer radical polymerization initiators, and N-isopropylacrylamide Atom transfer radical polymerization is carried out, and the obtained water-soluble visible light photodegradation catalyst not only has a good catalytic effect on the degradation of dyes in printing and dyeing wastewater, but also retains the temperature sensitivity of poly-N-isopropylacrylamide, and then realizes the visible light photodegradation catalyst. Under irradiation, the photodegradation catalysis in the water phase can be easily and completely recycled and reused, and belongs to the technical field of wastewater pollutant degradation catalysis. technical background [0002] With the rapid development of printing and dyeing industry, printing and dyeing wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07D487/22C08F120/54C02F1/30C02F1/72C02F103/30
CPCY02P20/584
Inventor 段潜仇楠楠李艳辉常晶晶
Owner CHANGCHUN UNIV OF SCI & TECH
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