Preparation method and application of cobalt-based bimetallic sulfur/carbon catalyst derived from MOFs

A carbon catalyst and bimetallic technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as difficult to degrade and cannot effectively remove antibiotics, so as to alleviate agglomeration or stacking and increase electrons Effect of transfer efficiency and acceleration of reaction rate

Active Publication Date: 2021-10-22
SHENYANG PHARMA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, antibiotics are refractory organic pollutants, which are difficult to degrade in nature, and traditional sewage treatment processes cannot effectively remove these antibiotics. Therefore, the development of new antibiotic wastewater treatment technologies has attracted much attention.

Method used

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  • Preparation method and application of cobalt-based bimetallic sulfur/carbon catalyst derived from MOFs
  • Preparation method and application of cobalt-based bimetallic sulfur/carbon catalyst derived from MOFs
  • Preparation method and application of cobalt-based bimetallic sulfur/carbon catalyst derived from MOFs

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Embodiment 1

[0035] A cobalt cerium bimetallic sulfur / carbon catalyst (CoCeS / C) provided in this embodiment is prepared according to the following steps:

[0036] (1) Preparation of ZIF-67 nanoparticles: 1.4552g Co(NO 3 ) 2 ·6H 2 0 was dissolved in 100mL of methanol as solution A; 1.6420g of 2-methylimidazole was dissolved in 100mL of methanol as solution B. Add liquid B dropwise into liquid A while stirring, stir at room temperature for 8 hours, wash several times, and vacuum dry to obtain pure ZIF-67 dodecahedron.

[0037] (2) Preparation of cobalt-cerium double metal hydroxide composite material: take 0.08g ZIF-67 and evenly disperse it in 15mL of absolute ethanol as liquid A; then take 0.40mmol Co(NO 3 ) 2 ·6H 2 0 and 0.15mmol Ce(NO 3 ) 3 ·6H 2 O in 10ml of anhydrous ethanol solution, as B solution; after ultrasonication, add B solution drop by drop to A solution, reflux at 85°C for 60 minutes, take out the product and wash it several times, and obtain cobalt-cerium layered doubl...

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Abstract

The invention belongs to the technical field of sewage treatment technologies and environment-friendly functional materials, and particularly relates to a preparation method and application of a cobalt-based bimetallic sulfur/carbon (CoMS/C) catalyst derived from metal organic frameworks (MOFs). According to the cobalt-based bimetallic sulfur/carbon catalyst, zeolite imidazate skeleton-67 (ZIF-67) is used as a precursor to derive a layered bimetallic hydroxide with a three-dimensional configuration so as to realize doping of a second metal ion, and a novel Fenton-like catalyst with a carbon substrate is prepared through a one-step vulcanization and carbonization method. The catalyst is of a hollow three-dimensional structure, the surface of the catalyst is provided with uniformly dispersed active sites, an activated persulfate system can generate strong-oxidizing harmless reactive oxygen species such as sulfate free radicals and hydroxyl free radicals, vulcanization and carbonization reduce ion dissolution and effectively increase electron transfer efficiency, and thus the capability of catalytically degrading organic pollutants is improved. When the catalyst is applied to high-concentration ofloxacin wastewater, the degradation rate is obviously improved, and the catalyst has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment technology and environmental protection functional materials, and specifically relates to a preparation method and application of a cobalt-based bimetallic sulfur / carbon catalyst derived from metal organic frameworks (metal organic frameworks, MOFs). Background technique [0002] In modern society, antibiotics are widely used in clinical medicine, aquaculture, and livestock and poultry farming. Nearly 80%-90% of antibiotics and their metabolites are discharged into domestic sewage and breeding sewage with excrement, causing water pollution. Moreover, antibiotics are refractory organic pollutants, which are difficult to degrade in nature, and traditional sewage treatment processes cannot effectively remove these antibiotics. Therefore, the development of new antibiotic wastewater treatment technologies has attracted much attention. Ofloxacin and other quinolones are typical representatives...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043C02F1/72C02F101/38
CPCB01J27/043C02F1/722C02F1/725C02F2305/026C02F2101/38Y02W10/37
Inventor 梁宁陈文杰杜丹丹
Owner SHENYANG PHARMA UNIVERSITY
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