Hydrogel evaporation film, preparation method and applications thereof

A hydrogel film and hydrogel technology are applied in general water supply conservation, chemical instruments and methods, seawater treatment, etc., which can solve the problem of low carbon evaporation film efficiency, achieve high light absorption rate, and improve evaporation efficiency.
CN111170392AInactive Publication Date: 2020-05-19ZHEJIANG NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG NORMAL UNIVERSITY
Publication Date
2020-05-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a hydrogel evaporation film, a preparation method and applications thereof. The hydrogel evaporation film comprises a hydrogel film matrix and carbon light absorption materials, wherein the carbon light absorption materials are uniformly distributed in the hydrogel film matrix, the light-absorbing carbon particles are uniformly dispersed in the hydrogel, and have a light absorptivity of more than 90% in the range from visible light to infrared light, the hydrogel has naturally formed multi-stage micro-nano holes, water is wrapped in the hydrogel to form pore channels communicated with one another, and the water can be conveyed from the bottom of the film to the evaporation side receiving sunlight.
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Description

technical field

[0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a hydrogel evaporation membrane and a preparation method and application thereof, which can efficiently convert sunlight for evaporating water and realize seawater desalination. Background technique

[0002] There are two main types of commercial seawater desalination technologies: distillation and reverse osmosis membrane. The fresh water prepared by distillation is of high quality, but it consumes a lot of energy, the equipment is complex, and the production cost is high. Only in areas with abundant energy can fresh water be produced at a relatively low cost. The reverse osmosis membrane method uses the membrane to intercept salt to realize the desalination of seawater. Its production cost is lower than that of the distillation method, but the quality of fresh water produced through the reverse osmosis membrane is not as good as that of the distillatio...

Claims

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