Super-hydrophilic copper-based MOF photo-thermal material, preparation method and application thereof

A super-hydrophilic, copper-based technology, used in heat exchange materials, general water supply conservation, chemical instruments and methods, etc., can solve problems such as limiting solar heat conversion efficiency, limiting large-scale applications, and complex manufacturing processes, achieving excellent The effect of light absorption, excellent solar energy absorption performance, and simple preparation process

Inactive Publication Date: 2021-06-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current carbon-based materials, despite their high broadband solar energy absorption, are susceptible to contamination by oil-based water pollutants ubiquitous in seawater during practical desalination processes.
Most metals have narrow solar absorption bandwidths, thus limiting their solar thermal conversion efficiencies
Plasmonic metal nanoparticles have good light-to-heat conversion properties, but the high cost of preparation limits their large-scale applications
Similarly, traditional carbon-based materials and biomass materials have the advantages of wide wavelength range, light absorption, and good photostability, but the production process is complicated and not scalable.

Method used

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  • Super-hydrophilic copper-based MOF photo-thermal material, preparation method and application thereof
  • Super-hydrophilic copper-based MOF photo-thermal material, preparation method and application thereof
  • Super-hydrophilic copper-based MOF photo-thermal material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] (1) First cut the commercial polyester fabric to the required size (eg 21cm -2 ), followed by washing with a solution of deionized water and acetone to clean the polyester fabric.

[0032] (2) Place the cleaned polyester fabric in a magnetron sputtering vacuum chamber. Select a DC power supply as the sputtering source, and pump the vacuum of the sputtering chamber to 9.0×10 through a mechanical pump and a molecular pump. -4 Pa, followed by Ar plasma etching at a pressure of 5 Pa for 10 min to improve the adhesion of the film. A high-purity copper target (99.9% pure) and argon gas were used during the deposition process, and the pressure in the vacuum chamber was adjusted to 0.5 Pa. Sputtering for 20 minutes under the conditions of Ar flow rate of 40 sccm and current of 0.25 A allowed the sputtered copper clusters to deposit on the surface of the textile to prepare a copper-coated polymer fabric film.

[0033] (3) Use dilute H 2 SO 4 (5 vol%), deionized water and ac...

specific Embodiment approach 2

[0038] (1) First cut the commercial polyester fabric to the required size (eg 21cm -2 ), followed by washing with a solution of deionized water and acetone to clean the polyester fabric.

[0039] (2) Place the cleaned polyester fabric in a magnetron sputtering vacuum chamber. Select a DC power supply as the sputtering source, and pump the vacuum of the sputtering chamber to 9.0×10 through a mechanical pump and a molecular pump. -4 Pa, followed by Ar plasma etching at a pressure of 5 Pa for 15 min to improve the adhesion of the film. A high-purity copper target (99.9% pure) and argon gas were used during the deposition process, and the pressure in the vacuum chamber was adjusted to 0.5 Pa. Sputtering for 20 minutes under the conditions of Ar flow rate of 40 sccm and current of 0.25 A allowed the sputtered copper clusters to deposit on the surface of the textile to prepare a copper-coated polymer fabric film.

[0040] (3) Use dilute H 2 SO 4 (5 vol%), deionized water and ac...

specific Embodiment approach 3

[0045] (1) First cut the commercial polyester fabric to the required size (eg 21cm -2 ), followed by washing with a solution of deionized water and acetone to clean the polyester fabric.

[0046] (2) Place the cleaned polyester fabric in a magnetron sputtering vacuum chamber. Select a DC power supply as the sputtering source, and pump the vacuum of the sputtering chamber to 9.0×10 through a mechanical pump and a molecular pump. -4 Pa, followed by Ar plasma etching at a pressure of 5 Pa for 20 min to improve the adhesion of the film. A high-purity copper target (99.9% pure) and argon gas were used during the deposition process, and the pressure in the vacuum chamber was adjusted to 0.5 Pa. Sputtering for 20 minutes under the conditions of Ar flow rate of 40 sccm and current of 0.25 A allowed the sputtered copper clusters to deposit on the surface of the textile to prepare a copper-coated polymer fabric film.

[0047] (3) Use dilute H 2 SO 4 (5 vol%), deionized water and ac...

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Abstract

The invention discloses a super-hydrophilic copper-based MOF photo-thermal fabric, a preparation method and application thereof, and belongs to the technical field of photo-thermal material preparation. The preparation method comprises the following steps: carrying out plasma etching treatment and deposition treatment by taking a polymer fabric film as a substrate to prepare a copper-coated polymer fabric film; and carrying out Cu(OH)2 nanowire growth treatment on the obtained copper-coated polymer fabric film, and then carrying out hydrothermal treatment to prepare the super-hydrophilic copper-based MOF photo-thermal material. According to the invention, the super-hydrophilic copper-based MOF photo-thermal material has excellent super-hydrophilicity and ultrahigh evaporation efficiency due to a unique metal organic porous carbon skeleton structure, so that a brand new photo-thermal conversion material is provided for a solar-driven interface seawater desalination technology; and the preparation process is simple, large-scale production can be achieved, and the preparation method can be well applied to the field of preparation and application of portable solar evaporators.

Description

technical field [0001] The invention belongs to the technical field of photothermal material preparation, and relates to a superhydrophilic copper-based MOF photothermal material and a preparation method and application thereof. Background technique [0002] Freshwater resources are one of the most important resources for public health and social development. However, the lack of fresh water resources has become one of the major social problems. Although 75% of the earth's surface is covered by seawater, only 10% of it can be used by residents, and with the rapid growth of population and the pollution caused by industrial activities Worldwide, 1.2 billion people lack access to safe drinking water. Therefore, developing a scalable and environmentally friendly seawater desalination technology is crucial to meet the growing demand for freshwater. To solve this problem, scientists have turned to the ocean, proposing two of the most common solutions—reverse osmosis and multista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/14C08G83/00C02F1/14C02F103/08
CPCC02F1/14C02F2103/08C08G83/008C09K5/14Y02A20/124Y02A20/142Y02A20/212
Inventor 王成兵许珂圆王九龙
Owner SHAANXI UNIV OF SCI & TECH
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