Composite material for polluted seawater desalination and preparation method thereof

Abstract

A preparation method of a composite material for polluted seawater desalination includes following steps: step 1, preparing a titanium dioxide nanomaterial which is a large-area bi-pass titanium dioxide nanotube array thin film; step 2, preparing a silver ammonia solution and a glucose solution; step 3, preparing a titanium dioxide nano composite material modified by silver nanoparticles: utilizing the silver ammonia solution and the glucose solution prepared in the step 2 to modify the silver nanoparticles onto the titanium dioxide nanomaterial in the step 1. The preparation method is simpleand convenient in operation, low in cost and high in controllability. Silver oxide and silver chloride films can be generated when the silver nanoparticles are used and stored in actual environment, so that structure of the nanoparticles is enabled to be more stable, dielectric constant of environment in which the silver nanoparticles are positioned is enabled to be richer, and utilizable spectrumrange of the silver nanoparticles is expanded.

Description

technical field [0001] The invention belongs to the technical field of floating membranes, and in particular relates to a composite material for desalination of polluted seawater and a preparation method thereof. Background technique [0002] With the continuous development of society and economy, traditional energy sources are increasingly exhausted, fresh water resources are in short supply, and environmental pollution and other problems are becoming more and more serious. As a clean and sustainable energy source, solar energy has always been valued by researchers. At present, many studies focus on the use of solar energy for desalination of seawater to solve the problem of shortage of fresh water resources in the context of energy crisis. In recent years, interfacial photovapor conversion, as a new photothermal conversion mechanism, can achieve the purpose of seawater desalination through efficient solar photothermal conversion through suitable light-absorbing materials. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiency of the existing applied materials, that is, the organic pollutants in the seawater cannot be treated in the process of seawater desalination, especially the volatile pollutants with low boiling points, and provide a kind of full solar spectrum response , a large-area double-pass titanium dioxide nanotube array film composite material with photocatalytic properties and a preparation method thereof, the technical scheme is as follows:

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