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Preparation method and application of CuS catalyst with three-dimensional framework structure

A three-dimensional framework, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of complex stoichiometric composition of CuS crystals, achieve high practical application and theoretical research value, convenient The effect of cheap operation and raw materials

Inactive Publication Date: 2011-07-27
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the stoichiometric composition of CuS crystals is complex, and the morphology and crystal phase change a lot, all of which have an important impact on the properties of CuS crystals.
[0004]As far as we know, there is no report on the use of CuS with a three-dimensional framework structure as a catalyst to repeatedly degrade methyl orange industrial wastewater

Method used

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  • Preparation method and application of CuS catalyst with three-dimensional framework structure
  • Preparation method and application of CuS catalyst with three-dimensional framework structure
  • Preparation method and application of CuS catalyst with three-dimensional framework structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 0.0803g of copper foam and elemental sulfur powder (molar ratio 1:2) into a 20 mL hydrothermal reactor (polytetrafluoroethylene liner), add 12 mL of ethylenediamine and 4 mL of ethylene glycol as a mixture solvent, at 160 o C for 24 hours, the product was washed with 0.5 mol / L dilute hydrochloric acid for 2 to 5 times, and deionized water for 2 to 5 times, and at 80 o C was dried for 5 hours to obtain CuS catalyst 1 with a three-dimensional skeleton structure.

[0033] in 1 mL H 2 o 2 With the assistance of , take 0.02 g of CuS catalyst to catalyze the degradation of methylene blue aqueous solution, the concentration of methylene blue aqueous solution is 10 mg / L, and the volume is 100 mL. After reacting for 100 minutes, the removal rate of methylene blue was 98.82%.

[0034] figure 1 (1) It is the XRD pattern of the prepared micron particles. It can be seen from the figure that the prepared CuS corresponds to the JCPDS card number 6-464; figure 2 (1a, 1b) ar...

Embodiment 2

[0036] Take 0.0835 g copper foam and elemental sulfur powder (molar ratio 1:2) into a 20 mL hydrothermal reaction kettle (polytetrafluoroethylene liner), add 13 mL ethylenediamine and 3 mL ethylene glycol as a mixture solvent, at 120 o C for 36 hours, the product was washed 2 to 5 times with 0.5 mol / L dilute nitric acid, and 2 to 5 times with deionized water, and the product was washed at 50 o C was dried for 36 hours to obtain CuS catalyst 2 with a three-dimensional skeleton structure.

[0037] in 1.5 mL H 2 o 2 With the assistance of , 0.02 g CuS catalyst was used to catalyze the degradation of methylene blue aqueous solution, the concentration of methylene blue aqueous solution was 20 mg / L, and the volume was 100 mL. After 60 minutes of reaction, the removal rate of methylene blue was 97.19%.

[0038] figure 1 (2) It is the XRD pattern of the prepared micron particles. It can be seen from the figure that the prepared CuS corresponds to the JCPDS card number 6-464; fi...

Embodiment 3

[0040] Take 0.0964 g of copper foam and elemental sulfur powder (molar ratio 1:2) into a 20 mL hydrothermal reactor (polytetrafluoroethylene liner), add 9 mL of L ethylenediamine and 3 mL of water as a mixed solvent, at 180 o C for 6 hours, the product was washed 2 to 5 times with 1.5 mol / L dilute sulfuric acid, and 2 to 5 times with deionized water, and the product was washed at 50 o C was dried for 11 hours to obtain CuS catalyst 3 with a three-dimensional skeleton structure.

[0041] in 2 mL H 2 o 2 With the assistance of , take 0.02 g of CuS catalyst to catalyze the degradation of methylene blue aqueous solution, the concentration of methylene blue aqueous solution is 10 mg / L, and the volume is 100 mL. After reacting for 80 minutes, the removal rate of methylene blue was 95.93%.

[0042] figure 1 (3) It is the XRD pattern of the prepared micron particles. It can be seen from the figure that the prepared CuS corresponds to the JCPDS card number 6-464; figure 2 (3a, 3...

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Abstract

The invention discloses a preparation method and application of a CuS catalyst with a three-dimensional framework structure. In the invention, CuS crystalline materials in four shapes including hexagonal phase shape, three-dimensional shape, plate shape and flower shape are synthesized by adopting a solvothermal method, and a catalytic degradation experiment is carried out by taking azo dye (methyl orange) as a research object. The catalyst does not need light and has more than 85% of degradation rate to high-concentration industrial waste water within 60 minutes. The CuS catalyst prepared by the preparation method disclosed by the invention has the advantages of effective treatment on methyl orange dye waste water, low operation cost, requirements for normal temperature and normal pressure, simple process, no need of light, simplicity and convenience for operation, no secondary pollution, high catalytic efficiency, no influence on catalytic efficiency in the recycling process as well as very high actual application and theoretical research values.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, and in particular relates to a preparation method and application of a CuS catalyst with a three-dimensional skeleton structure. Background technique [0002] With the development of national economy, dye wastewater has become an important pollution source of water environment. Therefore, the treatment of dye wastewater is a major problem that environmental science at home and abroad urgently needs to solve. In my country, azo dyes are an important class of dyeing agents, which are widely used in the textile industry. Due to the stability, toxicity, and harmfulness of other additives of azo dyes, traditional conventional treatment methods such as physical, chemical, biochemical, and electrochemical methods are not ideal for the removal of such organic dye compounds. In order to solve the problem of unsatisfactory removal effect, many researches on the oxida...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/02A62D3/10A62D101/28B01J35/00
Inventor 米立伟李珍王海磊郑直郭珊珊
Owner XUCHANG UNIV
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