Catalyst using graphene as carrier, preparation method of catalyst, method for degrading wastewater and application of catalyst

A graphene and catalyst technology, which is applied in the field of degrading wastewater, can solve the problems of high energy consumption, easy agglomeration, and high treatment costs, and achieve high stability, heat resistance, acid and alkali resistance, high oxidation performance, and high catalytic activity. Effect

Active Publication Date: 2020-05-19
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The current classical Fenton catalytic method has high energy consumption, large consumption of catalyst, and it is difficult to recycle, and the treatment cost is relatively high
Fenton-like catalytic technology has attracted widespread attention, and the newly developed Fenton-like catalysts have significant effects on various pollutants, but there are still various shortcomings, such as the activity of Fenton-like catalysts prepared by magnetic ferroferric oxide. Components, easy to agglomerate, reducing catalytically active sites

Method used

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  • Catalyst using graphene as carrier, preparation method of catalyst, method for degrading wastewater and application of catalyst
  • Catalyst using graphene as carrier, preparation method of catalyst, method for degrading wastewater and application of catalyst
  • Catalyst using graphene as carrier, preparation method of catalyst, method for degrading wastewater and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] S11: Add 0.52 g (4 mmol) of cyanuric acid into the Erlenmeyer flask, add 20 mL of pure water, and then add an appropriate amount of PEI into the solution to dissolve the cyanuric acid.

[0042] S12: 0.32g (2.5mmol) of melamine was added to the Erlenmeyer flask, and 20mL of pure water was added to undergo ultrasonic treatment to form a suspension, and the suspension was added to the solution in a to form a white milky colloid.

[0043] S13: The white milky colloid was sonicated for 10 minutes, shaken at room temperature for 4 hours, filtered with a 0.22 μm filter membrane, placed in a glass dish, and kept overnight at 60° C. in a vacuum oven.

[0044] S1: Take out the melamine-cyanuric acid-polyimide in the glass dish and grind it into a fine powder, then take 1.25g and grind it evenly with 0.1g manganese chloride and 0.1g ferric chloride.

[0045] S2: Put the uniformly ground powder mixture into the tube furnace for calcination, and under the condition of blowing nitrog...

Embodiment 2

[0050] S11: Add 0.4 g (4 mmol) of cyanuric acid into the Erlenmeyer flask, add 60 mL of pure water, and then add an appropriate amount of PEI into the solution to dissolve the cyanuric acid.

[0051] S12: 0.2g (2.5mmol) of melamine was added to the Erlenmeyer flask, and 60mL of pure water was added to undergo ultrasonic treatment to form a suspension, and the suspension was added to the solution in a to form a white milky colloid.

[0052] S13: The white milky colloid was sonicated for 5 minutes, shaken at room temperature for 2 hours, filtered with a 0.22 μm filter membrane, placed in a glass dish, and kept overnight at 60° C. in a vacuum oven.

[0053] S1: Take out the melamine-cyanuric acid-polyimide in the glass dish and grind it into a fine powder, then take 1g and grind it evenly with 0.05g manganese chloride and 0.05g ferric chloride.

[0054] S2: Put the uniformly ground powder mixture into the tube furnace for calcination, and under the condition of blowing nitrogen, ...

Embodiment 3

[0057] S11: Add 0.6 g (4 mmol) of cyanuric acid into the Erlenmeyer flask, add 20 mL of pure water, and then add an appropriate amount of PEI into the solution to dissolve the cyanuric acid.

[0058] S12: 0.4g (2.5mmol) of melamine was added to the Erlenmeyer flask, and 20mL of pure water was added to undergo ultrasonic treatment to form a suspension, and the suspension was added to the solution in a to form a white milky colloid.

[0059] S13: The white milky colloid was sonicated for 20 minutes, shaken at room temperature for 6 hours, filtered with a 0.22 μm filter membrane, placed in a glass dish, and kept overnight at 60° C. in a vacuum oven.

[0060] S1: Take out the melamine-cyanuric acid-polyimide in the glass dish and grind it into a fine powder, then take 1.5g and grind it evenly with 0.2g of manganese chloride and 0.2g of ferric chloride.

[0061] S2: Put the uniformly ground powder mixture into the tube furnace for calcination, and under the condition of blowing nit...

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Abstract

The invention relates to the technical field of catalysts, specifically to a catalyst with graphene as a carrier, a preparation method of the catalyst, a method for degrading wastewater and application of the catalyst. The preparation method comprises the following steps that S1, a precursor, namely melamine-cyanuric acid-polyimide powder, manganese chloride powder and ferric chloride powder are mixed and then ground so as to obtain a ground powder mixture; and S2, the ground powder mixture is calcined and cooled. According to the method, graphene serves as the carrier, metal single atoms of Fe and Mn are compounded to the surface of graphene to obtain the heterogeneous Fenton-like catalyst, and graphene has super-strong electron transfer capacity and can enhance catalytic activity. Besides, graphene is used as the carrier, so agglomeration of catalytic active particles can be effectively prevented, more active sites are exposed, and the removal efficiency of sulfamethoxazole pollutants is improved.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a catalyst with graphene as a carrier, a preparation method, a method for degrading waste water and an application thereof. Background technique [0002] The traditional method of homogeneous Fenton catalysis is Fe 2+ with H 2 o 2 Under acidic conditions, hydroxyl radicals (HO·) will be generated. Hydroxyl free radical is an important active oxygen, which is formed by the loss of an electron from hydroxide radical in molecular formula. Hydroxyl radicals have a very strong ability to obtain electrons, that is, oxidation ability, with an oxidation potential of 2.8eV. It is the oxidant second only to fluorine in nature. Can efficiently oxidize organic pollutants into H 2 O and CO 2 As well as other small molecular substances, it is an environmentally friendly green catalyst. But this method also has some disadvantages, such as the Fe used in the reaction 2+ will become Fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C02F1/72C02F101/38C02F101/30
CPCB01J23/8892C02F1/725C02F2101/38C02F2101/40C02F2305/023
Inventor 陆佳滢马纾婷郭传溢伍日昕吴西林陈建荣
Owner ZHEJIANG NORMAL UNIVERSITY
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