Self-water-supply type photo-thermal water evaporation device based on composite hydrogel

A composite hydrogel and photothermal technology, applied in the direction of carbon compounds, molybdenum sulfide, inorganic chemistry, etc., can solve the antifouling performance of photothermal systems, resistance to salting out pollution and biological pollution, hot spots without a large number of dispersion and thermal stability Insufficiency, deficiency and other problems, to achieve the stability of anti-bacterial biofouling performance, high-efficiency seawater desalination, and reduce the effect of evaporation enthalpy
CN112707391AActive Publication Date: 2021-04-27DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2021-04-27

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Abstract

The invention relates to a composite hydrogel-based self-water-supply type photo-thermal water evaporation device. Porous molybdenum disulfide MoS2 nano particles are intercalated between graphene through a one-step chemical reduction reaction. The efficient water evaporation rate of 3.2 kg m<-2>h<-1> can be achieved under illumination of 0.9 kW m<-2> and is far higher than that of an existing photo-thermal interface water evaporation system of the same type, and the device has bacterial biological pollution resistance and good stability. The provided photo-thermal interface water evaporation system is expected to realize efficient seawater desalination, and provides a solution for sustainable clean water production.
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Description

technical field

[0001] The invention belongs to the field of photothermal materials, in particular to a composite hydrogel-based self-supply photothermal water evaporation device. Background technique

[0002] Solar-driven interfacial water evaporation is considered to be the most promising approach to alleviate freshwater scarcity due to its excellent evaporation performance and thermal management. To maximize evaporation efficiency, various photothermal materials (plasmonic nanoparticles, carbon-based nanomaterials, semiconductors, etc.) and interfaces (self-supporting films, bilayer films, artificial transpiration systems, etc.) have been used to harvest solar energy and Reduce heat loss. Among them, hydrogel-based solar evaporation systems have received extensive attention because the hydrogel network contains a large amount of intermediate water, which can activate water molecules and accelerate water evaporation with a small amount of energy.

[0003] However, most o...

Claims

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