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Composite photocatalyst with titanium dioxide axially functionalized by metallic zinc porphyrin and preparation method thereof

A technology of titanium dioxide and zinc porphyrin, applied in the field of photocatalytic materials, can solve the problems of narrow spectral response range and wide band gap, and achieve the effects of good photothermal stability, good absorption and easy realization

Inactive Publication Date: 2017-04-26
JIANGSU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, titanium dioxide itself also has disadvantages, such as wide band gap and narrow spectral response range, it can only absorb ultraviolet light with a wavelength less than 387.5nm, and the utilization rate of sunlight energy is only 4%.

Method used

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  • Composite photocatalyst with titanium dioxide axially functionalized by metallic zinc porphyrin and preparation method thereof
  • Composite photocatalyst with titanium dioxide axially functionalized by metallic zinc porphyrin and preparation method thereof
  • Composite photocatalyst with titanium dioxide axially functionalized by metallic zinc porphyrin and preparation method thereof

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Experimental program
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Embodiment

[0031] Example metal zinc porphyrin axially functionalized titanium dioxide composite photocatalyst ZnTpp / TiO 2 Preparation of:

[0032] Ultrasonically disperse titanium dioxide (0.15g) in the polar organic solvent tetrahydrofuran (10mL), and after the dispersion is uniform, add isonicotinic acid (0.5g) and N,N'-dicyclohexylcarbodiimide (0.1g) , for an esterification reaction. After the reaction was completed, the reaction solution was cooled to room temperature, and the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and dichloromethane respectively, and then vacuum-dried at room temperature for 12 hours to obtain a white powder product, namely iso Titanium dioxide covalently functionalized with nicotinic acid; under ultrasonication, dissolve the product obtained in the above steps and metal zinc porphyrin (25 mg) in a polar organic solvent N,N'-dimethylformamide, and perform functionalization under nitrogen protection Response 2 da...

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Abstract

The invention belongs to the technical field of photocatalytic materials for degrading dye wastewater pollutants, and discloses a composite photocatalyst with titanium dioxide axially functionalized by metallic zinc porphyrin and a preparation method thereof. The method includes the synthesis steps that anatase type titanium dioxide and metallic zinc porphyrin are proportionally mixed in an organic solvent, heating reflux is conducted, and then the photocatalyst with titanium dioxide sensitized by metallic zinc porphyrin is obtained after filtering, washing and drying. The synthesis method is simple, and the prepared composite photocatalyst is stable in property, high in photocatalytic activity and capable of being used as an environment purifying material used for photocatalytic treatment of dye wastewater pollutants.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials for degrading dye wastewater pollutants, and specifically relates to a composite photocatalyst of a novel "organic-inorganic" metal zinc porphyrin axially functionalized titanium dioxide and a preparation method thereof. Background technique [0002] With the rapid development of social economy and the acceleration of industrialization, the problem of environmental pollution is becoming more and more serious. The consumption and discharge of a large number of chemical raw materials make the living environment around people worse. Among them, organic dye wastewater has deep color, high concentration, and high toxicity, which is difficult to degrade under natural conditions, and has become a major problem in the field of water treatment. Therefore, developing a simple and effective method to degrade organic pollutants is an urgent problem for human society. In recent years, photoca...

Claims

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Application Information

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IPC IPC(8): B01J31/02C02F1/30C02F101/38
CPCC02F1/30B01J31/0295C02F2305/10C02F2101/308C02F2101/38B01J35/39Y02W10/37
Inventor 赵炜王允王爱健窦生平吴里程王谦
Owner JIANGSU UNIV
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