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Porous MoS2 hydrogel as well as preparation method and application thereof

A hydrogel and moisture technology, applied in gel preparation, water/sewage treatment, general water supply conservation, etc., can solve the problem of not being able to achieve high steam evaporation rate and anti-salt performance at the same time, the material is not friendly to the environment, and the material has poor mechanical properties and other problems, to achieve excellent anti-salt performance, high-efficiency desalination yield, mild effect on the environment

Pending Publication Date: 2022-01-04
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing interfacial photovapor conversion materials cannot simultaneously achieve high vapor evaporation rate and excellent anti-salt performance.
In addition, the existing interfacial photoevaporation materials still have problems such as poor mechanical properties, expensive preparation costs, and unfriendly materials.

Method used

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  • Porous MoS2 hydrogel as well as preparation method and application thereof
  • Porous MoS2 hydrogel as well as preparation method and application thereof
  • Porous MoS2 hydrogel as well as preparation method and application thereof

Examples

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preparation example Construction

[0028] A kind of porous MoS provided by the embodiment of the present invention 2 The preparation method of hydrogel comprises the following steps:

[0029] S1, MoS 2 Preparation of molybdate, thiourea and water in a reactor to react to obtain a black substance, then wash and dry the black substance to obtain MoS 2 nanomaterials. Preferably, the reactor is a reactor with a polytetrafluoroethylene liner. Petal-shaped MoS can be prepared by reacting molybdate, thiourea and water in a reactor 2 nanomaterials. MoS 2 Nanomaterials have a wide light absorption range and high solar energy absorption rate, so they can be used as light-to-heat conversion materials.

[0030] Further, in a preferred embodiment of the present invention, the molybdate includes ammonium molybdate tetrahydrate or sodium molybdate dihydrate, and the mass ratio of the molybdate, the thiourea and the water is 2- 3: 4-5: 60-80.

[0031] Further, in a preferred embodiment of the present invention, the rea...

Embodiment 1

[0047] A kind of porous MoS provided by this embodiment 2 Hydrogel, which is prepared according to the following steps:

[0048] (1)MoS 2 Preparation: Put ammonium molybdate tetrahydrate, thiourea, and water into a reaction kettle with a polytetrafluoroethylene lining at a mass ratio of 2:4:60, react at 210°C for 8 hours, and then take it out to obtain a black substance. The above-mentioned black substance was washed alternately with ultrapure water and absolute ethanol for 5 times, and then dried in an oven at 100 °C until the water was completely removed, and the petal-shaped MoS was obtained. 2 nanomaterials.

[0049] (2) Slurry preparation: MoS 2 , acrylamide, N, N'-methylenebisacrylamide and water are put into a ball mill tank at a mass ratio of 5:3:0.2:20, and the ball mill is used to grind and make pulp for 2 hours.

[0050] (3) Stirring and foaming of the slurry by mechanical stirring: Take out 20 mL of the slurry prepared in step (2), add 0.02 g of a surfactant, a...

Embodiment 2

[0054] A kind of porous MoS provided by this embodiment 2 Hydrogel, which is prepared according to the following steps:

[0055] (1)MoS 2 Preparation: Put ammonium molybdate tetrahydrate, thiourea, and water into a reaction kettle with a polytetrafluoroethylene lining at a mass ratio of 3:5:80, react at 210°C for 8 hours, and then take it out to obtain a black substance. The above-mentioned black substance was washed alternately with ultrapure water and absolute ethanol for 5 times, and then dried in an oven at 100 °C until the water was completely removed, and the petal-shaped MoS was obtained. 2 nanomaterials.

[0056] (2) Slurry preparation: MoS 2 , acrylamide, N, N'-methylenebisacrylamide and water are put into a ball mill tank at a mass ratio of 5:3:0.2:20, and the ball mill is used to grind and make pulp for 2 hours.

[0057] (3) Stirring and foaming of the slurry by mechanical stirring: Take out 20 mL of the slurry prepared in step (2), add 0.02 g of a surfactant, a...

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Abstract

The invention provides porous MoS2 hydrogel as well as a preparation method and application thereof, and the preparation method comprises the following steps: putting molybdate, thiourea and water into a reaction kettle for reaction to obtain a MoS2 nano material; then putting the MoS2 nano material, acrylamide, N,N'-methylene bisacrylamide and water into a ball milling tank, and conducting grinding to obtain slurry; stirring and foaming the slurry to obtain porous slurry; and finally, with N,N,N',N'-tetramethylethylenediamine as a catalyst and a persulfate aqueous solution as an initiator, subjecting the porous slurry to a gelation reaction, so as to obtain the porous MoS2 hydrogel. According to the porous MoS2 hydrogel disclosed by the invention, polyacrylamide hydrogel is taken as a substrate, and petal-shaped MoS2 nano materials are uniformly distributed on the polyacrylamide hydrogel. Compared with most existing light evaporation materials, the porous MoS2 hydrogel has higher steam evaporation rate and excellent salt deposition resistance, and is an efficient seawater desalination material.

Description

technical field [0001] The invention relates to the technical field of seawater desalination materials, and in particular to a porous MoS 2 Hydrogels, methods of preparation and applications thereof. Background technique [0002] With the increase of world population and the rapid development of industry, the shortage of drinking water has become a global problem. Seawater desalination, as an alternative and incremental technology for freshwater resources, has received more and more attention from many coastal countries in the world. Photothermal conversion is a way of utilizing solar energy, which has the characteristics of relatively high efficiency and low cost. Interface light-vapor conversion technology is a new light-to-heat conversion mechanism developed in recent years. With the help of micro-nano structure material design and effective control of optics and heat, it can fully absorb solar energy and localize energy conversion to the gas-liquid interface, so that l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00C02F1/04C02F1/14C01G39/06B82Y30/00B82Y40/00C02F103/08
CPCB01J13/0056C02F1/042C02F1/14C02F1/045C01G39/06B82Y30/00B82Y40/00C02F2103/08C02F2303/22Y02A20/124Y02A20/142Y02A20/212
Inventor 付明来刘攀苑宝玲徐垒陈晨
Owner HUAQIAO UNIVERSITY
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