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Polyoxometallate/resin hybrid material capable of realizing photocatalytic degradation of organic dyes

A polyoxometalate, photocatalytic material technology, applied in chemical/physical processes, light water/sewage treatment, physical/chemical process catalysts, etc., to achieve good degradation, high photocatalytic activity, and easy separation and recovery.

Inactive Publication Date: 2012-08-15
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Methyl red is an azo dye compound that is difficult to biochemically degrade, so it can be used as one of certain representative dyes. The present invention uses methyl red as a model dye for photocatalytic degradation, and utilizes the polyoxometalate prepared by the present invention / Resin hybrid materials have not been reported as photocatalytic materials for the degradation of organic dyes

Method used

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  • Polyoxometallate/resin hybrid material capable of realizing photocatalytic degradation of organic dyes
  • Polyoxometallate/resin hybrid material capable of realizing photocatalytic degradation of organic dyes
  • Polyoxometallate/resin hybrid material capable of realizing photocatalytic degradation of organic dyes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: K 7 [BW 11 o 39 Mn(H 2 O)] / en / Merrifield resin hybrid material preparation

[0016] First, weigh 4.000g of resin and soak in 20mL of dioxane solvent for 36h, then add 10ml of ethylenediamine, heat to reflux for 10h, cool, filter, wash with water until the washing liquid is neutral, and dry in vacuum to obtain ethylenediamine-modified resin. Weigh 1.250 g of ethylenediamine-modified resin and disperse it in polyoxometalate K 7 [BW 11 o 39 Mn(H 2 O)] in aqueous solution (0.125gK 7 [BW 11 o 39 Mn(H 2 O)] dissolved in 25ml water), control the pH of the solution between 6 and 7, filter after stirring at room temperature for 24h, wash several times with distilled water at 80°C, and dry at room temperature to obtain K 7 [BW 11 o 39 Mn(H 2 O)] / en / Merrifield resin hybrid material. Its IR and SEM are shown in the attached figure 1 and 2 .

Embodiment 2

[0017] Example 2: K 7 [BW 11 o 39 Zn(H 2 O)] / en / Merrifield resin hybrid material preparation

[0018] Synthesis steps and testing steps refer to Example 1. Among them, the polyoxometalate uses K 7 [BW 11 o 39 Zn(H 2 O)]. Its IR and SEM are shown in the attached image 3 and 4 .

Embodiment 3

[0019] Example 3: K 7 [BW 11 o 39 Cd(H 2 O)] / en / Merrifield resin hybrid material preparation

[0020] Synthesis steps and testing steps refer to Example 1. Among them, the polyoxometalate uses K 7 [BW 11 o 39 Cd(H 2 O)]. Its IR and SEM are shown in the attached Figure 5 and 6 .

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Abstract

The invention relates to a polyoxometallate / resin hybrid material capable of realizing photocatalytic degradation of organic dyes, a preparation method for loading polyoxometallate to Merrifield resin, representation and photocatalytic activity evaluation. The hybrid material is formed by ethylenediamine covalence connection of polyoxometallate K7[BW11O39M(H2O)] (M=Mn, Co, Ni, Cu, Zn and Cd) and Merrifield resin. The material not only keeps photocatalytic activity of the polyoxometallate for the organic dyes, but also overcomes the shortcoming that the polyoxometallate is easily dissolved in polar solvents and cannot be recycled when treating wastewater containing the organic dyes, and has a wide application prospect in treatment for industrial dye wastewater.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic hybrid materials, and in particular relates to a hybrid material in which polyoxometalate and resin are covalently bonded through ethylenediamine and a preparation method thereof. Background technique [0002] Since humans entered the modern society, with the development of industry, especially the massive increase of industrial wastewater, the problem of water pollution has become very serious, causing serious harm to the environment. The treatment of harmful chemicals such as dyes and pesticides in water pollution has become an important research field of environmental protection. At present, the commonly used wastewater treatment methods are becoming more and more perfect for the treatment of heavy metals, suspended solids, biodegradable organic pollutants and nitrogen and phosphorus in sewage; however, some toxic and refractory organic pollutants, such as dioxins and PCBs Benzene an...

Claims

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Application Information

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IPC IPC(8): B01J31/34C02F1/30
Inventor 高丽华柏丽杰
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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