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Micro-nano composite zinc oxide slurry and preparation method and application thereof

A micro-nano composite, zinc oxide technology, applied in the direction of photosensitive equipment, semiconductor/solid-state device manufacturing, electrolytic capacitors, etc., can solve the problems of insufficient strength of ZnO photoanode film, complicated methods, etc. Simple, improved connectivity

Active Publication Date: 2012-07-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method of synthesizing zinc oxide is complicated, and needs to be reacted in an oil bath at 160°C, and the strength of the prepared ZnO photoanodic film is not enough

Method used

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  • Micro-nano composite zinc oxide slurry and preparation method and application thereof
  • Micro-nano composite zinc oxide slurry and preparation method and application thereof
  • Micro-nano composite zinc oxide slurry and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Place the Erlenmeyer flask with 250ml of deionized water in a water bath at 80°C, then add 1g of cetyltrimethylammonium bromide (CTAB) to the deionized water; after 30 minutes, the surfactant is completely dissolved , after the temperature is constant, add 5ml of ammonium hydroxide (NH 3 content between 25.0%-28.0%), mechanically stirred for 10 minutes; weighed 1.8 grams of zinc acetate dihydrate, dissolved in 15ml of deionized water, and then added to the Erlenmeyer flask, at this time there was Zn(OH) 2 A white precipitate is formed, and the reaction is carried out for 1 hour; take the Erlenmeyer flask out of the water bath, cool to room temperature, then filter the precipitate with a glass sand funnel, wash the precipitate with absolute ethanol for 3 times, and put it into a watch glass. Ethanol remaining in the sample was evaporated as much as possible. Weigh the quality of the product, then add a certain amount of ethanol according to the ratio of 1g solid: 1.4ml ...

Embodiment 2

[0046] Place the Erlenmeyer flask with 500ml of deionized water in a water bath at 80°C, then add 1 gram of cetyltrimethylammonium bromide (CTAB) to the deionized water; after 30 minutes, the surfactant is completely Dissolve, after the temperature is constant, add 5ml ammonium hydroxide (NH 3content between 25.0%-28.0%), mechanically stirred for 10 minutes; weighed 1.8 grams of zinc acetate dihydrate, dissolved in 15ml of deionized water, and then added to the Erlenmeyer flask, at this time there was Zn(OH) 2 White precipitate The reaction was carried out for 1 hour; the Erlenmeyer flask was taken out from the water bath, cooled to room temperature, and then the precipitate was filtered out with a glass sand funnel. Ethanol remaining in the sample was evaporated. Weigh the quality of the product, then add a certain amount of ethanol according to the ratio of 1g solid: 1.4ml ethanol, mix and disperse under the conditions of ultrasonic vibration and vortex vibration, the frequ...

Embodiment 3

[0048] Place the Erlenmeyer flask with 1000ml of deionized water in a water bath at 80°C, then add 1 gram of cetyltrimethylammonium bromide (CTAB) to the deionized water; after 30 minutes, the surfactant is completely Dissolve, after the temperature is constant, add 5ml ammonium hydroxide (NH 3 content between 25.0%-28.0%), mechanically stirred for 10 minutes; weighed 1.8 grams of zinc acetate dihydrate, dissolved in 15ml of deionized water, and then added to the Erlenmeyer flask, at this time there was Zn(OH) 2 White precipitate The reaction was carried out for 1 hour; the Erlenmeyer flask was taken out from the water bath, cooled to room temperature, and then the precipitate was filtered out with a glass sand funnel. Ethanol remaining in the sample was evaporated. Weigh the quality of the product, then add a certain amount of ethanol according to the ratio of 1g solid: 1.4ml ethanol, mix and disperse under the conditions of ultrasonic oscillation and vortex oscillation, the...

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Abstract

The invention aims to provide a preparation method of micro-nano composite zinc oxide slurry and the application of micro-nano composite zinc oxide particles prepared by the method to the preparation of a dye sensitized solar cell photoanode. In the preparation method, the micro-nano composite zinc oxide slurry is prepared by mixing and dispersing zinc hydroxide and ethanol / water. The zinc hydroxide is prepared by the following steps of: (1) heating deionized water to 60 to 100 DEG C, adding a surfactant, standing for 30 to 40 minutes, adding a precipitant and stirring for 10 to 15 minutes soas to obtain solution A; (2) dissolving zinc salt in the deionized water so as to obtain solution B; and (3) mixing the solution A and the solution B, standing for 50 to 70 minutes, filtering, washing with absolute ethyl alcohol and allowing the absolute ethyl alcohol to volatilize so as to obtain zinc hydroxide solid powder. A zinc oxide photoanode with micro-nano composite structure provided bythe invention brings the advantages of large particles and small particles into full play and a certain dye absorption amount and effective scattering of sunlight are ensured; moreover, the small particles enhance the internal connectivity of the entire film and contribute to electronic transmission.

Description

technical field [0001] The invention relates to a zinc oxide and its preparation method and application, in particular to a micro-nano composite zinc oxide slurry and its preparation method and application. Background technique [0002] With the rapid increase of world population and the rapid development of human society, the growth and consumption of human energy demand are also getting faster and faster. At present, 80% of the world's energy still comes from fossil fuels represented by oil, coal, and natural gas. As non-renewable energy sources, these fossil fuels are far from meeting the requirements of human long-term development. In addition, a large amount of carbon dioxide gas released during the combustion of these fossil fuels will lead to the generation of the greenhouse effect. At present, more and more people are turning their attention to renewable energy sources that are harmless to the environment, such as wind energy, water energy, biomass energy, and sola...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0224H01G9/042H01G9/20H01M14/00H01L51/48H01L51/46H01L51/44H01L51/42
CPCY02E10/542Y02E10/549
Inventor 史彦涛詹纯王立铎朱益锋邱勇
Owner TSINGHUA UNIV
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