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Preparation method and application of oxygen-doped molybdenum disulfide material with defects

A molybdenum disulfide and oxygen doping technology, applied in molybdenum sulfide, chemical instruments and methods, and other chemical processes, can solve the problems of inhibiting the growth of aquatic organisms and difficult to degrade, and achieve fast adsorption rate, increased adsorption capacity, and practical The effect of performance improvement

Active Publication Date: 2020-08-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its stable aromatic structure makes it difficult to degrade, exists in the water environment for a long time, and inhibits the growth of aquatic organisms

Method used

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  • Preparation method and application of oxygen-doped molybdenum disulfide material with defects
  • Preparation method and application of oxygen-doped molybdenum disulfide material with defects
  • Preparation method and application of oxygen-doped molybdenum disulfide material with defects

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A method for preparing an oxygen-doped molybdenum disulfide material 1 with defects, comprising the following steps:

[0033] 1) Weigh 2.48g of ammonium molybdate tetrahydrate, 4.56g of thiourea and 72mL of deionized water for subsequent use;

[0034] 2) dissolving ammonium molybdate tetrahydrate and thiourea in water to obtain a mixture;

[0035] 3) Add the mixture into the reaction kettle, and conduct a hydrothermal reaction at a temperature of 220°C for 24 hours; a black precipitate is obtained;

[0036] 4) The black precipitate was washed with deionized water, dried in vacuum at a temperature of 60° C., and finally calcined in air at a temperature of 330° C. for 2 hours; an oxygen-doped molybdenum disulfide material 1 with defects was obtained.

Embodiment 2

[0038] A method for preparing an oxygen-doped molybdenum disulfide material 2 with defects, comprising the following steps:

[0039] 1) Weigh 2.48g of ammonium molybdate tetrahydrate, 4.56g of thiourea and 72mL of deionized water for subsequent use;

[0040] 2) dissolving ammonium molybdate tetrahydrate and thiourea in water to obtain a mixture;

[0041] 3) Add the mixture into the reactor, and conduct a hydrothermal reaction at a temperature of 220° C. for 18 hours; a black precipitate is obtained;

[0042] 4) The black precipitate was washed with deionized water, dried in vacuum at a temperature of 60° C., and finally calcined in air at a temperature of 330° C. for 2 hours; an oxygen-doped molybdenum disulfide material 2 with defects was obtained.

Embodiment 3

[0044] A method for preparing an oxygen-doped molybdenum disulfide material 3 with defects, comprising the following steps:

[0045] 1) Weigh 2.48g of ammonium molybdate tetrahydrate, 4.56g of thiourea and 72mL of deionized water for subsequent use;

[0046] 2) dissolving ammonium molybdate tetrahydrate and thiourea in water to obtain a mixture;

[0047] 3) Add the mixture into the reaction kettle, and conduct a hydrothermal reaction at a temperature of 220° C. for 12 hours; a black precipitate is obtained;

[0048] 4) The black precipitate was washed with deionized water, dried in vacuum at a temperature of 60° C., and finally calcined for 2 hours at a temperature of 330° C. in air; an oxygen-doped molybdenum disulfide material 3 with defects was obtained.

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Abstract

The invention discloses a preparation method and application of an oxygen-doped molybdenum disulfide material with defects. The method comprises the steps: dissolving ammonium molybdate tetrahydrate and thiourea in water to obtain a mixture; adding the mixture into a reaction kettle, and carrying out hydrothermal reaction for 12-24 h at the temperature of 200-250 DEG C to obtain a black precipitate; washing the black precipitate with deionized water, drying in vacuum, and finally calcining for 1.5-2.5 h under the air condition that the temperature is 300-350 DEG C; and obtaining the oxygen-doped molybdenum disulfide material with defects. The oxygen-doped molybdenum disulfide material with the defects is used as an adsorbent for adsorbing methylene blue, the defects and oxygen doping havea synergistic effect, and compared with single defects and oxygen-doped molybdenum disulfide, the oxygen-doped molybdenum disulfide material with the defects has the advantages that the adsorption capacity is greatly improved, and the adsorption rate is high.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a preparation method and application of an oxygen-doped molybdenum disulfide material with defects. Background technique [0002] As an important organic dye, methylene blue is widely used in chemical indicators, biological dyes, textiles and medicines. However, its stable aromatic structure makes it difficult to degrade, and it exists in the water environment for a long time, inhibiting the growth of aquatic organisms. At the same time, its harmful effects on the human body, such as vomiting, shock, and paralysis of limbs, have also been confirmed. Therefore, how to efficiently remove methylene blue from sewage and industrial wastewater is of great importance for establishing a healthy living environment. [0003] At present, methods such as adsorption, coagulation, biodegradation, photolysis, membrane filtration, and chemical oxidation have been used to remove methyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06C01G39/06C02F1/28B01J20/30C02F101/30
CPCB01J20/0218B01J20/0266B01J20/06C01G39/06C02F1/281C02F2101/308
Inventor 夏令黄吴吉王涵杨浪宋少先
Owner WUHAN UNIV OF TECH
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