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A kind of preparation method of magnetically recyclable light-like Fenton catalyst and its application

A catalyst and magnetic technology, applied in the field of preparation of light-like Fenton catalysts, can solve the problems of difficult recovery, high cost, low stability, etc., and achieve the effect of simple and easy operation and energy saving in the preparation process

Active Publication Date: 2021-02-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, Ag 3 PO 4 With low stability, Ag + The shortcomings of being easily reduced to Ag simple substance, easy to inactivate, difficult to recycle and high cost limit the Ag 3 PO 4 practical application of
To solve these problems, researchers compound it with other semiconductor materials, such as Ag 3 PO 4 / Bi 2 WO 6 、Ag 3 PO 4 / Bi 2 MoO 6 Composite materials, etc., use the matching energy bands of the two to quickly separate photogenerated electron-hole pairs, prolong the life of photogenerated carriers, improve photocatalytic activity and photocatalytic stability, but these materials still have not solved their recycling difficulties. The problem

Method used

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  • A kind of preparation method of magnetically recyclable light-like Fenton catalyst and its application
  • A kind of preparation method of magnetically recyclable light-like Fenton catalyst and its application
  • A kind of preparation method of magnetically recyclable light-like Fenton catalyst and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of barium ferrite material, weigh 0.4g FeCl 3 ·6H 2 O and 0.04 g BaCl 2 2H 2 O, dispersed in 20 mL of distilled water, added 4 g of KOH and stirred for 0.5 h. Then transfer it to the reaction kettle and put it in an oven to raise the temperature to 200°C, keep it for 24h, then cool to room temperature and wash and dry to get BaFe 12 o 19 Precursor: Put the precursor material in a crucible and place it in a ceramic fiber muffle furnace, program the temperature up to 800°C at a rate of 3°C / min in an air atmosphere, keep it for 3 hours and then cool naturally to obtain BaFe 12 o 19 ;

[0031] (2) BaFe 12 o 19 / Ag 3 PO 4 The preparation of composite catalyst, weigh the Na of 2.0g 3 PO 4 12H 2 O and 0.4g AgNO 3 were added to 20mL of distilled water and dissolved to obtain Na 3 PO 4 solution and AgNO 3 solution; in a water bath at 60°C, the AgNO 3 The solution was stirred for 1 h at a stirring rate of 300 r / min, and then Na was added 3 PO 4...

Embodiment 2

[0035] (1) Preparation of barium ferrite material, weigh 0.4g FeCl 3 ·6H 2 O and 0.04 g BaCl 2 2H 2 O, dispersed in 20 mL of distilled water, added 4 g of KOH and stirred for 0.5 h. Then transfer it to the reaction kettle and put it in an oven to raise the temperature to 200°C, keep it for 24h, then cool to room temperature and wash and dry to get BaFe 12 o 19 Precursor: Put the precursor material in a crucible and place it in a ceramic fiber muffle furnace, program the temperature up to 800°C at a rate of 3°C / min in an air atmosphere, keep it for 3 hours and then cool naturally to obtain BaFe 12 o 19 ;

[0036] (2) BaFe 12 o 19 / Ag 3 PO 4 The preparation of composite catalyst, weigh the Na of 2.0g 3 PO 4 12H 2 O and 0.4g AgNO 3 were added to 20mL of distilled water to dissolve to obtain Na 3 PO 4 solution and AgNO 3 solution; in a water bath at 60°C, 9.8 mg of BaFe 12 o 19 Add to AgNO 3 solution, stirred at a stirring rate of 300r / min for 1h, and then adde...

Embodiment 3

[0039] (1) Preparation of barium ferrite material, weigh 0.4g FeCl 3 ·6H 2 O and 0.04 g BaCl 2 2H 2 O, dispersed in 20 mL of distilled water, added 4 g of KOH and stirred for 0.5 h. Then put the transfer reaction kettle in an oven to raise the temperature to 200 ° C, keep it for 24 hours, cool to room temperature, wash and dry to get BaFe 12 o 19 Precursor: Put the precursor material in a crucible and place it in a ceramic fiber muffle furnace, program the temperature up to 800°C at a rate of 3°C / min in an air atmosphere, keep it for 3 hours and then cool naturally to obtain BaFe 12 o 19 ;

[0040] (2) BaFe 12 o 19 / Ag 3 PO 4 The preparation of composite catalyst, weigh the Na of 2.0g 3 PO 4 12H 2 O and 0.4g AgNO 3 were added to 20mL of distilled water to dissolve to obtain Na 3 PO 4 solution and AgNO 3 solution; in a water bath at 60°C, 49 mg of BaFe 12 o19 Add to AgNO 3 solution, stirred at a stirring rate of 300r / min for 1h, and then added Na 3 PO 4 sol...

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Abstract

The invention belongs to the field of preparation technology and application of photocatalytic materials, in particular to the preparation and application of a magnetically recyclable photo-Fenton catalyst; the specific steps are: weighing ferric chloride hexahydrate and barium chloride dihydrate and adding them to distilled water , then add KOH, stir, then transfer to the reaction kettle, put it in an oven for reaction, cool, wash and dry to get barium ferrite; put it in a crucible, and put it in a ceramic fiber muffle furnace for calcination reaction After the reaction, the barium ferrite was obtained by natural cooling; then weighed trisodium phosphate dodecahydrate and silver nitrate and dispersed them in distilled water, and added barium ferrite to the silver nitrate solution under water bath conditions, stirred, and then added Trisodium phosphate solution, stirring; after washing and drying, a composite catalyst is obtained, which is a magnetically recyclable light-like Fenton catalyst; the present invention does not require additional H 2 o 2 , the obtained composite catalyst has high catalytic efficiency and can be magnetically recovered and reused.

Description

technical field [0001] The invention belongs to the field of preparation technology and application of photocatalytic materials, and in particular relates to a preparation method and application of a magnetically recyclable photo-Fenton-like catalyst. Background technique [0002] With the growth of population and the development of society, environmental pollution is becoming more and more serious. At present, environmental pollution is mainly divided into marine pollution, air pollution, water pollution and so on. The earth is rich in water resources, but water pollution has affected the effective use of water, endangered human health, and damaged the ecological environment. If new catalysts with good circulation, high stability, and effective recovery are not developed to solve water pollution, it will take decades Mankind will face a very severe water resource crisis. Among them, bisphenol A (BPA), which is one of the water pollutants, is a widely used chemical. It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/18C02F1/30C02F1/72C02F101/34
CPCC02F1/30C02F1/722C02F1/725B01J23/002B01J27/1806C02F2101/345C02F2305/10C02F2305/026B01J35/33B01J35/39
Inventor 徐远国葛飞跃谢萌黄树全贺敏强许晖李华明
Owner JIANGSU UNIV