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Preparing process of nano ZnO line array coated with nano TiO2 particles

A nanowire array and nanoparticle technology, which is applied in the field of preparation of ZnO nanowire arrays, can solve the problems of ZnO nanowire chemical properties are not stable enough, easy to be corroded, etc., and achieve the effect of improving chemical stability

Inactive Publication Date: 2007-06-27
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, the chemical properties of ZnO nanowires are not stable enough, and they are particularly susceptible to corrosion in acidic or alkaline environments.

Method used

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  • Preparing process of nano ZnO line array coated with nano TiO2 particles
  • Preparing process of nano ZnO line array coated with nano TiO2 particles

Examples

Experimental program
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Embodiment 1

[0020] Embodiment 1: preparation surface is coated with TiO 2 The experimental procedure of the ZnO nanowire array of nanoparticles is divided into the following four steps:

[0021] The first step: the preparation of the alcohol sol of zinc oxide and titanium dioxide;

[0022] 1) Put 250ml of absolute ethanol and 5.4g of zinc acetate into a distillation bottle, heat under reflux at 90-100°C until the zinc acetate is completely dissolved, and continue boiling for 30-60 minutes. Take 1.47g of lithium hydroxide and put it into the cooled mixed solution, supersonize it in an ultrasonic machine for 1 hour to dissolve the lithium hydroxide, and then filter the solution to obtain the zinc oxide sol.

[0023] 2) Put 100ml of ethanol and 34ml of butyl titanate into a beaker, stir evenly, and then add 11ml of diethanolamine into the beaker. After mixing 55ml of ethanol and 9ml of water, pour it into the above mixed solution, and then stir for 3-5 hours to obtain an organosol of titan...

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Abstract

The present invention discloses preparation process of nanometer ZnO line array coated with nanometer TiO2 particle. After liquid phase process of growing nanometer ZnO line array, a sol-gel process is adopted to coat the nanometer ZnO line array with one layer of nanometer TiO2 particle, so as to obtain nanometer ZnO line array with surface TiO2 modification and high chemical stability. Owing to the coupling and synergistic effects between the nanometer ZnO particle and the nanometer TiO2 particle, the nanometer ZnO line array coated with nanometer TiO2 particle has reinforced and improved gas sensitive performance, light emitting performance, photocatalytic performance, etc as well as derived new physical phenomena and available functions.

Description

【Technical field】 [0001] The invention relates to the technical field of luminescent materials, in particular to a surface coated with TiO 2 Preparation method of ZnO nanowire arrays of nanoparticles. 【Background technique】 [0002] In recent years, research on ZnO nanowires has attracted people's attention, and it has important application value in the fields of blue-green light-emitting diodes and lasers, chemical sensors, piezoelectricity, photocatalysis, and photoelectric conversion. Arraying ZnO nanowires is beneficial to scale nanodevices, especially micronanodevices. The preparation methods of ZnO nanowire arrays usually include catalyst-assisted chemical vapor deposition, physical vapor deposition, template method, and two-step liquid phase method. However, the chemical properties of ZnO nanowires are not stable enough, and they are particularly susceptible to corrosion in acidic or alkaline environments. 【Content of invention】 [0003] The purpose of the presen...

Claims

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Application Information

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IPC IPC(8): C09K11/02
Inventor 袁志好闫晓娜王光喜崔永锋张明艳
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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