Method for preparing zinc oxide by using ultrasonic synthesis method

Abstract

The invention discloses a method for preparing a zinc oxide by using an ultrasonic synthesis method. The method comprises the following steps: respectively preparing a strong alkali solution and a zinc salt solution with the same volumes; respectively carrying out preheating treatment on the two solutions at the temperature of 0-100 DEG C; putting the strong alkali solution into an agitator blade, carrying out mechanical stirring, and simultaneously carrying out ultrasonic dispersion; injecting the zinc salt solution into the strong alkali solution, and further carrying out ultrasonic stirring for 10-60 seconds to obtain a mixture; standing and participating the mixture for 2-3 hours, filtering out an upper clear liquid, adding deionized water and further washing until the pH value of the upper clear liquid is neutral; washing with absolute ethyl alcohol; and finally drying to obtain solid powder. The synthesis method disclosed by the invention is simple and fast; zinc salt can be prepared by participation reaction in a water solution under the alkaline condition; and the prepared zinc oxide is applied to a dye-sensitized solar cell light anode, so that diffusion and permeation of quasi-solid electrolyte are facilitated; the relatively large specific surface area can be provided; and the adsorbing capacity of dyes is increased.

Description

technical field [0001] The invention relates to a method for preparing zinc oxide by using an ultrasonic synthesis method. Background technique [0002] In the 1990s, the Swiss Institute of Technology in Lausanne The research team led by the professor will porous TiO 2 The application of the thin film to solar cells has greatly improved the photoelectric conversion efficiency of this dye-sensitized solar cell. Under the conditions of simulating standard sunlight irradiation, the photoelectric conversion efficiency has reached 7.1% ( etc., US Patent, publication number, WO9116719A-31Oct 1991; etc., US Patent, Publication No., US005350644A-27Sep 1994). The working principle of the battery is: the dye molecules are excited by light to generate electrons, the electrons transition from the ground state of the dye molecules to the excited state, and the electrons in the excited state are injected into the conduction band of the semiconductor and move to the conductive substr...

AI Technical Summary

Problems solved by technology

However, it is difficult to control the morphology of ZnO by the above synthetic methods, and it is necessary to develop new synthetic methods to synthesize various morphologies to meet different requirements.

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