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Universal method for preparing metal monatomic carbon-based catalyst and application thereof

A kind of atomic carbon and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of low utilization rate of metal active sites

Active Publication Date: 2021-03-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the traditional heterogeneous Fenton-like system with metal as the active center, the metal components are in an aggregated state, and the utilization rate of the metal active site as a catalytic reaction is not high.

Method used

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  • Universal method for preparing metal monatomic carbon-based catalyst and application thereof
  • Universal method for preparing metal monatomic carbon-based catalyst and application thereof
  • Universal method for preparing metal monatomic carbon-based catalyst and application thereof

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Embodiment Construction

[0038] The present invention is further described in detail through the following embodiments in conjunction with the accompanying drawings.

[0039] (1) Preparation process of metal single-atom carbon-based catalysts

[0040] ① Take 300 mg of commercialized Ketjen Black (Lion Company, Japan) and stir in 3 mM (50 mL) sulfuric acid for 12 hours to oxidize the surface;

[0041] ② Centrifuge and wash the above-mentioned product several times, dry it for later use, and mark it as oxidized Ketjen Black;

[0042] ③Take 0.5mmol of Co(NO 3)2 ·6H 2 O (Aladdin Company) was dissolved in 2.5 mL of deionized water by ultrasonic for 3 min;

[0043] ④ Add 30 mg of oxidized Ketjen Black to the above mixture, and disperse it by ultrasonic for 3 minutes to make it evenly mixed;

[0044] ⑤ Add 800 mg of glucose to the above mixture, and disperse it ultrasonically for 3 minutes to make it evenly mixed;

[0045] 6. Add 7g of dicyandiamide (Bainwei Company) to the above mixture, ultrasonic for...

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Abstract

The invention discloses a universal method for preparing a metal monatomic carbon-based catalyst and an application thereof. The universal method comprises the following steps: taking a metal compoundas a monatomic precursor, Ketjen black as a carbon skeleton, glucose as a binder and dicyandiamide as a nitrogen element source. All the raw materials are uniformly mixed in an ultrasonic step-by-step dispersion mode, dried and ground, and annealed and cracked at high temperature, so that metal is in monatomic distribution. The prepared metal monatomic carbon-based catalyst is utilized to form aFenton-like system to degrade tetracycline-containing sewage, and has high removal efficiency. According to the invention, a copper monatomic carbon-based catalyst is taken as an example, 10 mg / L tetracycline (20 mL) can be completely removed within 1 min when 0.18 mM of persulfate is activated by 0.1 g / L of the catalyst, and the primary reaction kinetic constant is 4.9 min<-1>.

Description

technical field [0001] The invention relates to the technical field of environmental functional material synthesis and environmental pollution control, in particular to a universal method for preparing a metal single-atom carbon-based catalyst and its application of activating peroxodisulfate to quickly remove tetracycline antibiotic pollutants in water bodies. Background technique [0002] As industry advances, more and more emerging pollutants, including pharmaceuticals and personal care products, enter water bodies, raising concerns about the safety of drinking water. Among them, pollutants such as antibiotics have a low detection rate in water bodies, are difficult to degrade spontaneously, and have high cumulative toxicity. They have become one of the key objects of water pollution control. Traditional water treatment processes, such as biological methods, flocculation, adsorption, etc., have no obvious effect on the degradation and removal of such pollutants. Fenton / F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/72C02F101/38
CPCB01J27/24C02F1/722C02F2101/38
Inventor 王娟左四进刘维屏俞涛
Owner ZHEJIANG UNIV
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