A universal method for the preparation of metal single-atom carbon-based catalysts and its application

A kind of atomic carbon and catalyst technology, which is applied in the application of tetracycline antibiotic pollutants and the preparation of metal single-atom carbon-based catalysts, can solve the problem of low utilization of metal active sites, achieve large metal utilization efficiency, and promote the formation of single atoms , the effect of fast reaction kinetics

Active Publication Date: 2022-02-11
ZHEJIANG UNIV
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  • Abstract
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  • 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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  • A universal method for the preparation of metal single-atom carbon-based catalysts and its application
  • A universal method for the preparation of metal single-atom carbon-based catalysts and its application
  • A universal method for the preparation of metal single-atom carbon-based catalysts and its application

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Embodiment Construction

[0038] The invention is further detailed in connection with the accompanying drawings by the following examples.

[0039] (1) Preparation process of metal single atomic carbon-based catalyst

[0040] 1 Take 300 mg commercial CCC Black (Japanese Lion Corporation) stirred in 3 mm (50 mL) sulfuric acid for 12 h, oxidation thereof;

[0041] 2 Centrifugation of the above-mentioned product was washed several times, drying the ready-to-use, marked as oxidation;

[0042] 3 take 0.5mmol of CO (NO 3)2 · 6h 2 O (Aladdin Company) in 2.5 ml of deionized water, ultrasonic dissolved 3 min;

[0043] 4 Add 30 mg of oxidative CCC black, ultrasonic dispersed 3 minutes, so that it is mixed evenly;

[0044] 5 Add 800 mg of glucose into the mixture, ultrasonic dispersion 3 min, make it mixed uniform;

[0045] 6 Add 7 g of dicyandiamide (Bairishi Company) to the mixture, soon 30min, this process is continuously stirred, and it is mixed evenly.

[0046] 7 The mixture was dried at 60 ° C for 12 h, and the...

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Abstract

The invention discloses a universal method and application for preparing a metal single-atom carbon-based catalyst, comprising the following steps: using a metal compound as a single-atom precursor, Ketjen black as a carbon skeleton, glucose as a binder, and dicyandiamide as a source of nitrogen. By means of ultrasonic dispersion step by step, all raw materials are mixed evenly, then dried and ground, annealed and cracked at high temperature, so that the metal presents a single atom distribution. The invention uses the prepared metal monoatomic carbon-based catalyst to form a Fenton-like system to degrade tetracycline-containing sewage, and has high removal efficiency. Taking the copper single-atom carbon-based catalyst as an example, 0.1g / L catalyst activated 0.18mM persulfate can completely remove 10mg / L tetracycline (20mL) in 1min, and the kinetic constant of the first order reaction is 4.9min ‑1 .

Description

Technical field [0001] The present invention relates to environmental functional material synthesis and environmental pollution control technology, and more particularly to the preparation of a general method of preparing metal mono-atomic carbon-based catalysts and its activated overdisulfate rapid removal of tetracycline antibiotic contaminants in the water body. Background technique [0002] With the advancement of industrial, more emerging pollutants produced by drugs and personal care, this phenomenon has increasing the concerns of people's safety on drinking water. Among them, antibiotic contaminants are low in the water, which is difficult to spontaneously degrade, and have high toxic accumulation, and become one of the focus of water pollution control. Traditional water treatment processes, such as biological law, flocculation, adsorption, etc., the degradation of such contaminants is not obvious. Fanton / Class Fantonian can produce an active oxygen species having high o...

Claims

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Application Information

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Patent Type & Authority Patents(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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