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Molybdenum disulfide-magnetic ferrocerium oxide catalyst and preparation and application methods thereof

A technology of molybdenum disulfide and oxides, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems of poor reusability, slow conversion, low catalyst degradation efficiency, etc., and achieve material recovery The effect of convenient use, simple process, and excellent degradation and removal rate of organic dyes

Inactive Publication Date: 2021-06-04
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, practice has proved that among the existing catalysts for Fenton-like oxidation, Fe 2+ with Fe 3+ The conversion is slow, the degradation efficiency of the catalyst is low, and the reusability is poor

Method used

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  • Molybdenum disulfide-magnetic ferrocerium oxide catalyst and preparation and application methods thereof
  • Molybdenum disulfide-magnetic ferrocerium oxide catalyst and preparation and application methods thereof
  • Molybdenum disulfide-magnetic ferrocerium oxide catalyst and preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Prepare multiple groups of molybdenum disulfide-magnetic cerium iron oxide catalysts through the following steps:

[0077] (1) Take 26.67mmol (11.58g), 20mmol (8.68g), 13.33mmol (5.788g), 10mmol (4.342g), 8mmol (3.474g) of Ce(NO 3 ) 3 ·6H 2 The O solid was dissolved in 80 mL of deionized water and treated with ultrasound for 5 min to obtain different concentrations of Ce(NO 3 ) 3 ·6H 2 O solution;

[0078] (2) To the prepared multi-group Ce(NO 3 ) 3 ·6H 2 The Fe(NO 3 ) 3 9H 2 O, sonicate for 5 minutes;

[0079] (3) Add 40 mmol of citric acid to the solution obtained in (2), and sonicate for 10 min to completely dissolve the solid;

[0080] (4) The solution obtained in step (3) is placed on a magnetic stirrer and stirred for 2h, and the magnetic stirring speed is 180r / min, so that the solution is completely mixed;

[0081] (5) Add 20ml of ammoniacal liquor to the solution obtained in step (4), and adjust the pH of the solution to 9;

[0082] (6) Place the s...

Embodiment 2

[0101] Prepare multiple groups of molybdenum disulfide-magnetic cerium iron oxide catalysts through the following steps:

[0102] (1) Take 20mmol (8.68g) of Ce(NO 3 ) 3 ·6H 2 O solid was dissolved in 80mL deionized water, and sonicated for 5min;

[0103] (2) To the prepared Ce(NO 3 ) 3 ·6H 2 Add 20mmol (8.08g) of Fe(NO 3 ) 3 9H 2 O, sonicate for 5 minutes;

[0104] (3) Add 40 mmol of citric acid to the solution obtained in (2), and sonicate for 10 min to completely dissolve the solid;

[0105] (4) The solution obtained in step (3) is placed on a magnetic stirrer and stirred for 2h, and the magnetic stirring speed is 180r / min, so that the solution is completely mixed;

[0106] (5) Add 20ml of ammoniacal liquor to the solution obtained in step (4), and adjust the pH of the solution to 9;

[0107] (6) Place the solution obtained in step (5) in a hydrothermal reaction kettle made of PPL material, and conduct a hydrothermal reaction at 180° C. for 20 hours;

[0108] (7)...

Embodiment 3

[0119] Prepare multiple groups of molybdenum disulfide-magnetic cerium iron oxide catalysts through the following steps:

[0120] (1) Take 20mmol (8.68g) of Ce(NO 3 ) 3 ·6H 2 O solid was dissolved in 80mL deionized water, and sonicated for 5min;

[0121] (2) To the prepared Ce(NO 3 ) 3 ·6H 2 O solution was added with 20mmol (8.08g) of Fe(NO 3 ) 3 9H 2 O, sonicate for 5 minutes;

[0122] (3) Add 40 mmol of citric acid to the solution obtained in (2), and sonicate for 10 min to completely dissolve the solid;

[0123] (4) The solution obtained in step (3) is placed on a magnetic stirrer and stirred for 2h, and the magnetic stirring speed is 180r / min, so that the solution is completely mixed;

[0124] (5) Add 20ml of ammoniacal liquor to the solution obtained in step (4), and adjust the pH of the solution to 9;

[0125] (6) Place the solution obtained in step (5) in a hydrothermal reaction kettle made of PPL material, and conduct a hydrothermal reaction at 180° C. for 2...

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Abstract

The invention discloses a molybdenum disulfide-magnetic ferrocerium oxide catalyst as well as a preparation method and an application method thereof. The preparation method comprises the following steps: carrying out a first hydrothermal reaction on cerium nitrate, ferric nitrate and citric acid under an alkaline condition to obtain a cerium-iron oxide precursor; carrying out high-temperature calcination on the cerium-iron oxide precursor to obtain a magnetic cerium iron oxide; and carrying out a second hydrothermal reaction on the magnetic cerium iron oxide, (NH4) 6Mo7O24. 4H2O and thiourea to obtain the catalyst. The catalyst prepared by the method has relatively high organic dye degradation rate and recycling rate.

Description

technical field [0001] The invention relates to the technical field of catalysts for remediating organic dye pollution. Background technique [0002] With the development and progress of my country's economy, people have gradually paid attention to the protection of water environment, among which the water pollution caused by dyes needs to be solved urgently. According to statistics, the annual output of dyes in the world is about 8×10 5 ~9×10 5 tons, of which about 10% to 15% of the dyes are discharged into the environment during the process of production and use. However, dyes have extremely poor biodegradability and high chroma, and a large amount of acid and alkali are required in the production process, resulting in increasingly complex structures, large fluctuations in water quality, and increased toxicity, resulting in serious pollution of the water environment. At the same time, the properties of dyes are constantly developing in the direction of anti-photolysis, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J27/30B01J35/00B01J37/10C02F1/72C02F101/30
CPCB01J27/0515B01J27/30B01J37/10C02F1/725C02F2101/308B01J35/33
Inventor 谢燕华罗婷吴桐姜飞王波唐勇韩学威
Owner CHENGDU UNIVERSITY OF TECHNOLOGY