Method for preparing zinc oxide by using ultrasonic synthesis method

A technology of ultrasonic synthesis and zinc oxide, which is applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems such as the difficulty of zinc oxide morphology, and achieve the effect of simple synthesis method, increased adsorption capacity, and large specific surface area

Inactive Publication Date: 2015-03-25
史彦涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Method for preparing zinc oxide by using ultrasonic synthesis method
  • Method for preparing zinc oxide by using ultrasonic synthesis method
  • Method for preparing zinc oxide by using ultrasonic synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Prepare 50 mL each of 0.1 mol / L zinc chloride solution and 0.5 mol / L sodium hydroxide solution, then transfer the alkaline solution to a 250 mL beaker, react at 22 °C and put it into a stirring paddle for mechanical stirring, while Perform ultrasonic dispersion. Next, under the action of ultrasound, slowly add zinc chloride solution to the above sodium hydroxide solution at a rate of about 25ml / L, and then continue ultrasonic dispersion for 60s. After standing for 3 hours, filter off the supernatant liquid, then add deionized water to continue washing until the pH value of the supernatant is neutral, finally wash with absolute ethanol, and dry at 70°C to obtain a white solid Powder, denoted as sample T 1 , and its SEM photo is as figure 1 shown.

Embodiment 2

[0038] Prepare 50 mL each of 0.1 mol / L zinc chloride solution and 0.5 mol / L sodium hydroxide solution, then transfer the alkaline solution to a 250 mL beaker, react at 22 °C and put it into a stirring paddle for mechanical stirring, while Perform ultrasonic dispersion. Next, under the action of ultrasound, slowly add zinc chloride solution to the above sodium hydroxide solution at a rate of about 25ml / L, and then continue ultrasonic dispersion for 60s. After standing for 3 hours, filter off the supernatant liquid, then add deionized water to continue washing until the pH value of the supernatant is neutral, and finally wash with absolute ethanol, and dry at 80°C to obtain a white solid Powder, denoted as sample T 2 , and its SEM photo is as figure 2 shown.

Embodiment 3

[0040] Prepare 50 mL each of 0.05 mol / L zinc nitrate solution and 0.25 mol / L potassium hydroxide solution, then transfer the potassium hydroxide solution to a 250 mL beaker, react at 22 °C and put it into a stirring paddle for mechanical stirring, while Perform ultrasonic dispersion. Next, under the action of ultrasound, slowly add zinc nitrate solution to the above potassium hydroxide solution, the addition rate is about 25ml / L, and then continue ultrasonic dispersion for 60s. After standing for 3 hours, filter off the supernatant liquid, then add deionized water to continue washing until the pH value of the supernatant is neutral, and finally wash with absolute ethanol, and dry at 80°C to obtain a white solid Powder, denoted as sample C 1 , and its SEM photo is as image 3 shown.

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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...

Claims

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Application Information

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IPC IPC(8): C01G9/02
CPCC01G9/02
Inventor 史彦涛
Owner 史彦涛
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