A polysiloxane airgel composite material for efficient water evaporation and its preparation method and application

A polysiloxane and composite material technology, which is applied in general water supply conservation, chemical instruments and methods, seawater treatment, etc., can solve the problems of low utilization rate of solar energy, inability to effectively utilize latent heat of evaporation and condensation, and complicated installation.
CN110437496BActive Publication Date: 2020-10-27HUAIYIN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAIYIN INSTITUTE OF TECHNOLOGY
Publication Date
2020-10-27

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Abstract

The invention discloses a polysiloxane aerogel composite material for efficient water evaporation. The polysiloxane aerogel composite material uses cerium-doped nano-powder as supporting powder and hydrophilic polysiloxane aerogel as a supporting carrier, and a cerium-doped nano-powder is an efficient photothermal conversion material. The hydrophilically modified polysiloxane aerogel has unique structural characteristics, substrate loading can be easily realized, meanwhile, the aerogel has the advantages that the thermal conductivity is low and a 3D porous structure is realized and the salt are not prone to being enriched and crystallized, the rapid passing of water vapor is realized, and the characteristics of efficient light absorption, light conversion, water transport and water evaporation are achieved. The invention further discloses a preparation method of the polysiloxane aerogel composite material for efficient water evaporation and application of the material in seawater desalination or industrial sewage treatment.
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Description

technical field

[0001] The invention belongs to the technical field of water evaporation by utilizing solar energy, and relates to a photothermal material, in particular to a polysiloxane airgel composite material for high-efficiency water evaporation and its preparation method and application. Background technique

[0002] The total water stored on the earth is about 1386×1 billion cubic meters, of which ocean water is 1338×1 billion cubic meters, accounting for about 96.5% of the global total, and freshwater resources only account for 3.5% of the global total. And fresh water mainly exists in the form of glaciers and deep groundwater, and the fresh water that humans can directly use, such as rivers and lakes, only accounts for 0.3% of the world's total fresh water. Therefore, water shortage has become the primary problem facing cities all over the world. About 1.5 billion people in 80 countries and regions accounting for 40% of the world's total population are short of fre...

Claims

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