Supported metalloporphyrin/phthalocyanine catalyst, and preparation method and application thereof

A technology of metalloporphyrin and metallophthalocyanine, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of low binding force of metalloporphyrin/phthalocyanine and low degradation efficiency of organic pollutants , metal porphyrin/phthalocyanine shedding and other problems, to achieve the effect of facilitating degradation, reducing agglomeration, and improving oxidative degradation performance

Active Publication Date: 2021-02-05
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects or improvement needs of the prior art, the purpose of the present invention is to provide a simple green preparation method, and a highly active supported metalloporphyrin / phthalocyanine catalyst and its application, to solve the problem of using chemically synthesized metalloporphyrin in the prior art. The phylloline / phthalocyanine catalyst uses toxic and harmful reagents, and the operation is complicated; and it is loaded by impregnation, smearing, etc., and the binding force between the carrier and the metalloporphyrin / phthalocyanine is low, and the metalloporphyrin / phthalocyanine is easy to fall off from the carrier during use. Technical problems such as low pollutant degradation efficiency

Method used

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  • Supported metalloporphyrin/phthalocyanine catalyst, and preparation method and application thereof
  • Supported metalloporphyrin/phthalocyanine catalyst, and preparation method and application thereof
  • Supported metalloporphyrin/phthalocyanine catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A method for preparing hemin (FePP, CAS: 16009-13-5) / titanium dioxide composite material based on ball milling, comprising the following steps:

[0071] (1) Weigh 0.05 g of hemin (FePP), 0.5 g of titanium dioxide, add 5 mL of water, put 30 g of zirconia ball milling beads into a zirconia ball mill jar, and mill at a speed of 400 rpm for 2 hours.

[0072] (2) Transfer the milled composite material liquid to a liquid storage tank, clean the zirconia balls and the ball milling tank with distilled water, and transfer the remaining adhered composite catalyst to the liquid storage tank. The ball milling liquid was diluted and quantified to 10g / L.

[0073] (3) The ball mill liquid was dried in an oven at 70°C to obtain a composite catalyst powder, and the carrier titanium dioxide and hemin (porphyrin iron) / titanium dioxide were subjected to infrared testing respectively.

[0074] From attached figure 1 It can be seen that the mechanochemical ball milling method can well load...

Embodiment 2

[0076] A method for preparing iron phthalocyanine (FePC, CAS: 132-16-1) / silicon dioxide composite material based on mechanochemical method (ball milling), comprising the following steps:

[0077] (1) Weigh 0.5 g of cobalt phthalocyanine, 2.5 g of silicon dioxide, add 10 mL of water, and put 30 g of zirconia ball milling beads into a zirconia ball mill jar, and mill at a speed of 400 rpm for 2 hours.

[0078] (2) Transfer the milled composite material liquid to a liquid storage tank, clean the zirconia balls and the ball milling tank with distilled water, and transfer the remaining adhered composite catalyst to the liquid storage tank. The ball milling liquid was diluted and quantified to 10g / L.

Embodiment 3

[0080] With the hemin (FePP) / titanium dioxide prepared in Example 1, and according to the preparation method of Example 1, prepared respectively 2 o 3 , SiO 2 , ZnO as the carrier of hemin loading, adding Potassiumhydrogen peroxymonosulfate (PMS) as an activator to carry out the degradation experiment of pollutant trichlorophenol (TCP):

[0081] (1) Potassium monopersulfate (PMS) 50mM: Weigh 3.0738g of potassium monopersulfate (PMS) and dissolve it in 200mL of deionized water to prepare a concentration of 50mM.

[0082] (2) Weigh 0.0987 g of trichlorophenol (TCP) and dissolve it in a 1 L volumetric flask to obtain a stock solution of trichlorophenol (TCP) with a concentration of 500 μM.

[0083] (3) Add 20 mL of trichlorophenol (TCP) stock solution to four 50 mL beakers, add 28.9 mL of deionized water, add 1 mL of PMS stock solution, the concentration of TCP in the system is 200 μM, the pH of the system is 5, and finally add four kinds of 100 μL of catalytic solution (where...

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Abstract

The invention belongs to the field of catalysts and environmental water pollution treatment, and particularly relates to a supported metalloporphyrin/phthalocyanine catalyst as well as a preparation method and an application thereof. According to the preparation method disclosed by the invention, the loading of metalloporphyrin/phthalocyanine on the carrier material is simply and efficiently realized by a mechanochemical method, the agglomeration effect of metalloporphyrin/phthalocyanine is reduced to a great extent, and due to an electron transfer effect between the carrier material and metalloporphyrin/phthalocyanine, the density of electron clouds around central metal ions of porphyrin/phthalocyanine is changed, the heterolysis effect of hydroperoxide is promoted, and the activity is enhanced. The metalloporphyrin/phthalocyanine catalyst is loaded on the surface of the carrier material through a mechanochemical method, compared with a metalloporphyrin/phthalocyanine catalyst beforeloading, the loaded metalloporphyrin/phthalocyanine catalyst has the advantages that the oxidative degradation performance on organic pollutants is greatly improved, and the pH application range of the catalyst is also greatly widened.

Description

technical field [0001] The invention belongs to the field of catalyst and environmental water pollution treatment, in particular, it relates to a supported metalloporphyrin / phthalocyanine catalyst, its preparation method and application; more specifically, it relates to a supported metalloporphyrin prepared based on a mechanochemical method Phenyl / phthalocyanine catalysts, their preparation and applications. Background technique [0002] With the development of printing and dyeing textile, medicine, coking, and chemical industries, the discharge of refractory organic pollutants in sewage is increasing, and the types are becoming more and more complex. These refractory organic pollutants are toxic and harmful, and have carcinogenic, teratogenic and mutagenic effects. , Discharged into water bodies has caused great harm to the ecological environment and human health. It is difficult to degrade and remove these pollutants by traditional physical and chemical methods and biolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J21/06B01J37/00C02F1/32C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J37/0036B01J31/183B01J31/1625B01J35/004B01J21/063C02F1/32C02F1/722C02F1/725B01J2531/025B01J2531/842C02F2101/30C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2101/308C02F2305/10C02F2305/023
Inventor 胡敬平陈思静杨小容武龙胜丁晓宇潘可亮侯慧杰刘冰川杨家宽
Owner HUAZHONG UNIV OF SCI & TECH
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