A kind of cus/carbon black composite photothermal conversion material and preparation method thereof

Abstract

The invention discloses a CuS / carbon black composite photothermal conversion material and a preparation method thereof. The chemical formula of the CuS / carbon black composite photothermal conversion material is (1-x)CuS / xC, wherein the value of the carbon black mass x is 10%~30%, and its preparation method includes the following steps: 1) Weighing CuCl 2 ·H 2 O, Na 2 S 2 O 3 ·5H 2 Dissolve O and glucose in distilled water, stir evenly to obtain solution A, and then add ethylene glycol dropwise to solution A during the stirring process to obtain yellow-green suspension B; 2) Transfer suspension B to the reaction In the kettle, add distilled water to fill up to 70%~80% of the volume of the reaction kettle, put the reaction kettle into an oven for hydrothermal treatment at a temperature of 160~180℃ for 6~8h; 3) After the hydrothermal treatment reaction of suspension B is completed, it is naturally cooled When the temperature reaches room temperature, the black precipitate is collected by centrifugal sedimentation, washed with distilled water and absolute ethanol for 2 to 3 times, and then dried at 60 to 70° C. for 6 to 8 hours to obtain the CuS / carbon black composite photothermal conversion material; The photothermal conversion material has high photothermal conversion efficiency, simple preparation method, easy control and low production cost.

Description

technical field [0001] The invention belongs to the technical field of photothermal conversion materials, in particular to a CuS / carbon black composite photothermal conversion material and a preparation method thereof. Background technique [0002] With the development of human civilization and the surge in population, the demand for freshwater resources is also increasing day by day, but the freshwater available for people's use only accounts for about 1.03% of the total water, which is far from meeting people's daily needs. Seawater accounts for about 97% of the total water volume. Using abundant seawater resources to obtain freshwater resources is an effective way to solve the problem of insufficient freshwater supply. Solar photothermal conversion technology refers to the utilization technology of converting solar radiation energy into thermal energy, which is widely used in the fields of sewage treatment, seawater desalination, desalination and production of high-pressu...

AI Technical Summary

Problems solved by technology

The current light-to-heat conversion materials, such as carbon materials, have natural black properties and have good absorption in the entire solar spectrum. Excellent performance, at the same time, carbon materials have the advantage of low price, so they are widely used in light-to-heat conversion, but the conditions for the preparation and functionalization of carbon materials are relatively difficult

In view of the disadvantages of the application of the above-mentioned carbon materials, people began to introduce semiconductor photothermal materials, which are rich in types and low in preparation cost. The most common semiconductor photothermal materials are copper chalcogenide nanomaterials such as copper sulfide and copper selenide, but this material The light-to-heat conversion efficiency decreases with the decrease of particle size, and the light-to-heat stability is low

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