Preparation method of photo-thermal water evaporation material
A technology of hot water and aqueous solution, which is applied in general water supply conservation, chemical instruments and methods, seawater treatment, etc., can solve the problems of restricting large-scale use, low light-to-heat conversion efficiency, and low conversion efficiency, and achieve good structural stability, Enhanced light-to-heat conversion efficiency and low production cost
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[0020] A method for preparing a photothermal water evaporation material, comprising the steps of:
[0021] (1) Cotton is placed in the Tris buffer solution that pH is 8.5 and soaks 12min, then takes out, dries;
[0022] (2) Place the cotton treated in step (1) into an aqueous dopamine hydrochloride solution with a concentration of 2.5 mg / mL and soak for 12 minutes, then take it out and dry it;
[0023] (3) Cotton after step (2) is placed in the hydrogen peroxide aqueous solution of copper sulfate and soaked for 12min, then takes out and dries; in the hydrogen peroxide aqueous solution of described copper sulfate, the concentration of copper sulfate is 1.5mg / mL, the concentration of hydrogen peroxide is 3mg / mL;
[0024] (4) The cotton treated in step (3) was immersed in a graphene dispersion with a concentration of 1.5 mg / mL for 12 minutes, then taken out, washed with water, and finally dried at room temperature to obtain a photothermal water evaporation material.
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