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Solid-phase Fenton-like catalyst as well as preparation method and application thereof

A catalyst, Fenton's technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as unstable copper leaching, achieve excellent catalytic degradation activity, good stability, and easy recovery Effect

Active Publication Date: 2021-03-19
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although they can degrade organic matter in a neutral environment, the following two disadvantages are also obvious: on the one hand, they are unstable to copper leaching; on the other hand, they are compatible with H2O2 may be inhibited by natural organic matter containing a large number of hydroxyl and carboxyl functional groups in wastewater

Method used

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  • Solid-phase Fenton-like catalyst as well as preparation method and application thereof
  • Solid-phase Fenton-like catalyst as well as preparation method and application thereof
  • Solid-phase Fenton-like catalyst as well as preparation method and application thereof

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Embodiment 1

[0033] A kind of embodiment of solid-phase Fenton-like catalyst of the present invention, the preparation method of solid-phase Fenton-like catalyst described in the present embodiment comprises the steps:

[0034] (1) 2.87g aniline hydrochloride is added in the aqueous solution of 50mL, and the pH value of adjusting solution with anhydrous sodium carbonate is 7, obtains solution A;

[0035] (2) Add 1 g of polyacrylonitrile to solution A, stir evenly, react in a water bath at 70° C. for 2 hours, and then wash with deionized water to neutrality to obtain solid product A;

[0036] (3) Disperse the solid product A into 50 mL of deionized water, then add 0.017 g of copper nitrate, and stir for 1 h to obtain a suspension A;

[0037] (4) Adjust the pH of the suspension A to 9 with ammonia water, and evaporate the liquid to dryness at 80°C in a water bath to obtain a solid product B;

[0038] (5) Place the solid product B in an oven, dry it at 80°C, and then grind it evenly;

[003...

Embodiment 2

[0041] A kind of embodiment of solid-phase Fenton-like catalyst of the present invention, the preparation method of solid-phase Fenton-like catalyst described in the present embodiment comprises the steps:

[0042] (1) 2.87g aniline hydrochloride is added in the aqueous solution of 50mL, and the pH value of adjusting solution with anhydrous sodium carbonate is 7, obtains solution A;

[0043] (2) Add 1 g of polyacrylonitrile to solution A, stir evenly, react in a water bath at 70° C. for 2 hours, and then wash with deionized water to neutrality to obtain solid product A;

[0044] (3) Disperse the solid product A into 50 mL of deionized water, then add 0.051 g of copper nitrate, and stir for 1 h to obtain a suspension A;

[0045] (4) Adjust the pH of the suspension A to 9 with ammonia water, and evaporate the liquid to dryness at 80°C in a water bath to obtain a solid product B;

[0046] (5) Place the solid product B in an oven, dry it at 80°C, and then grind it evenly;

[004...

Embodiment 3

[0049] A kind of embodiment of solid-phase Fenton-like catalyst of the present invention, the preparation method of solid-phase Fenton-like catalyst described in the present embodiment comprises the steps:

[0050] (1) 2.87g aniline hydrochloride is added in the aqueous solution of 50mL, and the pH value of adjusting solution with anhydrous sodium carbonate is 7, obtains solution A;

[0051](2) Add 1 g of polyacrylonitrile to solution A, stir evenly, react in a water bath at 70° C. for 2 hours, and then wash with deionized water to neutrality to obtain solid product A;

[0052] (3) Disperse the solid product A into 50 mL of deionized water, then add 0.085 g of copper nitrate, and stir for 1 h to obtain a suspension A;

[0053] (4) Adjust the pH of the suspension A to 9 with ammonia water, and evaporate the liquid to dryness at 80°C in a water bath to obtain a solid product B;

[0054] (5) Place the solid product B in an oven, dry it at 80°C, and then grind it evenly;

[0055...

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Abstract

The invention discloses a solid-phase Fenton-like catalyst as well as a preparation method and application thereof, and belongs to the technical field of water treatment. The preparation process of the solid-phase Fenton-like catalyst disclosed by the invention comprises the following steps: preparing a neutral aniline hydrochloride solution, reacting aniline hydrochloride with polyacrylonitrile to obtain a solid product, dispersing the solid product in a solvent, and adding a copper source, thereby preparing the copper complex two-dimensional nitrogen-doped graphene-like coated zero-valent copper solid Fenton-like catalyst. The solid-phase Fenton-like catalyst disclosed by the invention has good catalytic activity, has relatively high catalytic activity in a solution with a pH value of 5-9, still keeps relatively high catalytic degradation capacity after being used for multiple times, and is suitable for wide application.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a solid-phase Fenton-like catalyst and a preparation method and application thereof. Background technique [0002] With the development of industry, the pollution of groundwater and surface water is becoming more and more serious, especially aromatic pollutants, which cause great harm to aquatic organisms and human health. Advanced Oxidation Process (AOPS), which utilizes highly reactive free radicals to remove aromatic pollutants, is considered the most common water treatment method. Among various AOPS, the heterogeneous Fenton-like catalytic oxidation process is considered to be a more efficient method for removing aromatic pollutants. Because the pH range of different types of wastewater is wide, and the Fe on the surface of the iron oxide-based Fenton catalyst 2+ / Fe 3+ Highly active only at low pH (<4). [0003] Recently, researchers have focused o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01J27/24C02F1/725C02F1/722C02F2305/026C02F2103/30C02F2101/345C02F2101/38C02F2101/36C02F2101/34Y02W10/37
Inventor 胡春廖威翔吕来
Owner GUANGZHOU UNIVERSITY
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