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A kind of preparation method and application of non-metal doped stainless steel mesh composite material

A stainless steel mesh and composite material technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, oxidized water/sewage treatment, etc., can solve the problems of inability to produce metal nanoparticles on a large scale, cumbersome preparation process, loss of active centers, etc. , to achieve the effect of excellent electron transfer ability, rich pore structure, and enhanced performance

Active Publication Date: 2021-09-21
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies in the prior art, to provide a method for preparing a non-metallic doped stainless steel mesh composite material and its application for degrading organic pollutants. What needs to be solved is that the preparation process is cumbersome, the process cost is high, and the synthesis time is long. , can not be produced on a large scale, and the metal nanoparticles are easy to oxidize and lose active centers during the catalytic degradation reaction.

Method used

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  • A kind of preparation method and application of non-metal doped stainless steel mesh composite material
  • A kind of preparation method and application of non-metal doped stainless steel mesh composite material
  • A kind of preparation method and application of non-metal doped stainless steel mesh composite material

Examples

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Effect test

Embodiment 1

[0035] In this example, firstly, a nitrogen-doped metal nanoparticle-loaded stainless steel mesh composite material was prepared according to the following steps.

[0036]1. Pretreatment of stainless steel: put 1.4g of 2000-mesh stainless steel mesh in ethanol and aqueous solution to remove surface impurities by ultrasonic, then put it in a mixed solution of 1M lithium chloride monohydrate and 1M phosphoric acid, and conduct 2h at 120°C. After activation treatment, it is washed with water several times until neutral and then dried for later use.

[0037] 2. Loading of non-metallic elements: Weigh 2g of melamine and the pretreated stainless steel mesh and place them in a quartz boat, then transfer the whole to a tubular resistance furnace, perform calcination and pyrolysis under the protection of an inert gas, and cool to At room temperature, the target product was obtained. Among them, the process of calcination and pyrolysis is to raise the temperature to 700° C. at a heatin...

Embodiment 2

[0049] In this example, a non-metal-doped stainless steel mesh composite material was prepared in the same manner as in Example 1, the only difference being that 2 g of dicyandiamide was used instead of 2 g of melamine to obtain the target non-metal-doped stainless steel mesh composite material.

[0050] Construct the organic pollutant catalytic reaction device identical with embodiment 1 with the nonmetal-doped stainless steel mesh composite material of the present embodiment, process following organic pollutant solution: the golden orange II solution simulation organic pollutant waste water (V of preparation 20mg / L =1000mL), and 200mg of oxidant permonomonosulfate (PMS) was added at the same time, and the degradation experiment was carried out by using an organic pollutant catalytic reaction device. After testing, the degradation rate of organic pollutant Golden Orange II can reach 100%.

Embodiment 3

[0052] In this example, a non-metal-doped stainless steel mesh composite material was prepared in the same manner as in Example 1, the only difference being that 2 g of urea was used instead of 2 g of dicyandiamide to obtain the target non-metal-doped stainless steel mesh composite material.

[0053] Construct the organic pollutant catalytic reaction device identical with embodiment 1 with the nonmetal-doped stainless steel mesh composite material of the present embodiment, process following organic pollutant solution: the golden orange II solution simulation organic pollutant waste water (V of preparation 20mg / L =1000mL), and 200mg of oxidant permonomonosulfate (PMS) was added at the same time, and the degradation experiment was carried out by using an organic pollutant catalytic reaction device. After testing, the degradation rate of organic pollutant Golden Orange II can reach 100%.

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Abstract

The invention discloses a preparation method and application of a non-metal-doped stainless steel mesh composite material. Firstly, a mixed solution of lithium chloride and phosphoric acid is used to carry out surface activation treatment on the cleaned stainless steel mesh; and then the activated stainless steel mesh is Together with the inorganic non-metallic source, it is transferred to a tube furnace for calcination and pyrolysis to obtain the target product. The composite material of the invention can be used as a catalyst to construct an organic pollutant catalytic reaction device to degrade the organic pollutant, the catalytic degradation rate reaches 100%, and the removal rate of the total organic carbon is as high as 99%.

Description

technical field [0001] The invention relates to a preparation method and application of a non-metal-doped stainless steel composite material, belonging to the technical field of inorganic catalyst preparation. Background technique [0002] Persistent Toxic Pollutants are a class of pollutants that are difficult to degrade in the environment, can be transported over long distances, and have the characteristics of bioaccumulation and "three-caused" toxicity. Due to their complex composition, strong biological toxicity, and poor biochemical Difficult to use traditional physical and chemical methods and biochemical technology for governance. How to eradicate persistent toxic pollutants is a key technical problem that needs to be solved urgently in the field of water pollution control. Subsequently, advanced oxidation technology has become a research hotspot in the field of sewage treatment by virtue of its ability to efficiently mineralize toxic organic pollutants in water. In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J27/24C02F1/725C02F2101/30C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2101/40
Inventor 姚运金余茂静胡欢欢高梦雪尹红玉张阳洋
Owner HEFEI UNIV OF TECH
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