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Heterogeneous Fenton catalyst of cobalt-sulfur co-doped graphene and its synthesis method and application

A co-doping, graphene technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as inadmissibility, carcinogenicity, etc., achieve good effect and stability, and large specific surface area. , the effect of easy recovery and recycling

Active Publication Date: 2021-06-08
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, experiments have proved that rhodamine B can cause cancer, and now it is not allowed to be used as food coloring

Method used

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  • Heterogeneous Fenton catalyst of cobalt-sulfur co-doped graphene and its synthesis method and application
  • Heterogeneous Fenton catalyst of cobalt-sulfur co-doped graphene and its synthesis method and application
  • Heterogeneous Fenton catalyst of cobalt-sulfur co-doped graphene and its synthesis method and application

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Embodiment

[0038] A kind of synthetic method of cobalt-sulfur co-doped graphene heterogeneous Fenton catalyst, comprises the following steps:

[0039] (1) Graphene oxide (GO) was synthesized by the classic Hummers method, and three layers were tightly wrapped with aluminum foil to form an oxygen-free environment during the muffle furnace firing process. Wherein, the calcination temperature is 350°C, the heating rate is 5°C / min, and the calcination time is 1h. Take it out after naturally cooling to room temperature to obtain reduced graphene oxide (rGO);

[0040] (2) Mix 0.5g rGO and 0.8g CoCl 2 2H 2 O mixed, add water 20mL, ethanol 20mL, ammonia water 0.5mL, H 2 SO 4 A mixed solution was formed in 2mL; where Co 2+ The mass of rGO is 40wt%;

[0041] (3) Place the above solution on a magnetic stirrer and stir for 30 minutes at room temperature to fully dissolve and mix it;

[0042] (4) Remove the solution after stirring, put it in an ultrasonic cleaner for 30 minutes;

[0043] (5)...

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Abstract

The invention discloses a heterogeneous Fenton catalyst of cobalt-sulfur co-doped graphene, its synthesis method and its application in degrading dye pollutants in water. Graphene oxide, with CoCl 2 2H 2 O mixed, then add water, ethanol, ammonia and concentrated H 2 SO 4 , to form a mixed solution; place the mixed solution at 100-150 ° C, and conduct a hydrothermal reaction for more than 4 hours; filter the resulting solid product, wash it with deionized water, and dry it to obtain a heterogeneous Fenton compound of cobalt-sulfur co-doped graphene catalyst. The cobalt-sulfur co-doped graphene heterogeneous Fenton catalyst of the present invention has a typical graphene lamellar structure and a large specific surface area; it has good oxidative decomposition effect and stability for rhodamine B.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a heterogeneous Fenton catalyst of cobalt-sulfur co-doped graphene, a synthesis method thereof and an application in degrading dye pollutants in water. Background technique [0002] In recent years, energy conservation and emission reduction has become a trend in my country's industrial development, and the printing and dyeing industry, which is relatively polluting, faces a series of national policy restrictions. [0003] Rhodamine B (RhB) is a synthetic dye with a bright pink color that was once used as a food additive. However, experiments have proved that rhodamine B can cause cancer, and it is not allowed to be used as food dyeing. However, industrial wastewater rich in rhodamine B is difficult to biodegrade, and usually needs to be partially oxidized and decomposed by oxidation technology to improve its biodegradability and facilitate subsequent process treatment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/043B01J37/08B01J37/34C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01J27/043B01J37/082B01J37/343C02F1/722C02F1/725C02F2101/34C02F2101/36C02F2101/38C02F2305/026
Inventor 吕来胡春曹文锐闫兵邢学辞刘荣荣
Owner GUANGZHOU UNIVERSITY
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