A kind of preparation method of Wo3 hydrate nano film

Abstract

A preparation method of WO3 hydrate nano-film, firstly adding tungsten powder into hydrogen peroxide solution and after the reaction is over, collecting the filtrate in the beaker as solution A; adding deionized water to solution A and diluting to obtain solution B ; The substrate is activated by ultrasonic vibration in water and absolute ethanol in turn; the B solution is poured into the microwave hydrothermal reaction kettle, and then put into the activated substrate, and the temperature control mode is selected for the reaction, and after the reaction is completed, it is naturally cooled to room temperature; open the hydrothermal reactor, take out the substrate, put it into an electric heating blast drying oven to dry to obtain a WO3 hydrate nano-film. The invention can quickly prepare the WO3 hydrate nano film with hydrated molecules, because the reaction is completed in one step without subsequent treatment, the preparation period is short, the process equipment is simple, the cost is low, the obtained WO3 film has regular morphology, high crystallinity and high purity .

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a WO 3 Preparation method of hydrate nano film. Background technique [0002] As a transition metal oxide semiconductor material, nano-WO 3 Thin films are currently widely studied due to their diverse crystal morphology and interesting physicochemical properties. Especially because of its electrochromic, thermochromic, aerochromic, and photocatalytic effects, it has been widely used in many fields, such as smart window materials, solar cell devices, gas-sensitive detectors, and photocatalysts. [0003] So far, traditional nano WO 3 The preparation methods of thin films mainly include chemical vapor deposition, physical vapor deposition, magnetron sputtering, sol-gel method, etc. In the above methods, most of the equipment is expensive, the process is complicated, resource-consuming or the shape is difficult to control accurately, and the obtained crystal effect is not idea...

AI Technical Summary

Problems solved by technology

In the above methods, most of the equipment is expensive, the process is complicated, resource-consuming or the shape is difficult to control accurately, and the obtained crystal effect is not ideal

However, the emerging preparation methods that have risen in China in the past ten years, such as hydrothermal and solvothermal methods, have given WO 3 The preparation of nano-film has opened up a new way, but it also has the disadvantages of long preparation cycle and low repeatability

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