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Monodisperse ZnO micro/nano material, and preparation method and application thereof

A micro-nano, monodisperse technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of restricting widespread use, high energy consumption, low output, etc., and achieve novel mechanism and high energy efficiency. The effect of low consumption and low preparation cost

Active Publication Date: 2016-06-08
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nanobowls and nanorings, especially nanostamps, are still rarely reported, and only literature [AppliedPhysicsLetters, 2005, 86, 043106], [Materialstoday, 2004: 24-33] and [Journal of Alloys and Compounds, 2009, 486, L13-L16] are published. Preparation of ZnO nanorings and nanobowls by a thermal deposition method
Among them, thermal deposition method, hydrothermal method, laser deposition method, electrochemical deposition method and other methods require high temperature, high pressure, special substrate or special equipment, and low output, high energy consumption and high cost limit their wide application.

Method used

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  • Monodisperse ZnO micro/nano material, and preparation method and application thereof
  • Monodisperse ZnO micro/nano material, and preparation method and application thereof
  • Monodisperse ZnO micro/nano material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037]0.1098 grams of zinc acetate dihydrate, 20.8 milliliters of water and 0.2 grams of CTAB were added to a 400 milliliter beaker and stirred for 15 minutes; then 29.2 milliliters of dimethyl sulfoxide was added and stirred for 30 minutes; then put into an oven at 70 °C for 1.5 hours, then cooled at room temperature for 3 hours, and finally washed and dried with ethanol to obtain the monodisperse ZnO nanobowls. The resulting product is white, and its phase, morphology, structure, selected area electron diffraction pattern, and photocatalytic degradation of Rhodamine B observed under a scanning electron microscope and a transmission electron microscope are as follows: Figure 1-5 As shown, it can be seen that the product is a uniform, monodisperse regular hexagonal ZnO nanobowl with rounded corners, a diameter of 143-205 nm, and a thickness of 39-73 nm.

Embodiment 2

[0039] The steps are the same as in Example 1, but the reaction time is 1 h. The morphology of the obtained product observed under the scanning electron microscope is as follows: Figure 6 As shown, it can be seen that the product is a uniform, monodisperse regular hexagonal ZnO nanobowl with rounded corners, a diameter of 135-190 nm, and a thickness of 42-71 nm. It can be seen that the reaction time is shortened and the size becomes smaller.

Embodiment 3

[0041] The steps are the same as in Example 1, but the reaction time is 1 h, and the cooling time is 0 h (that is, direct centrifugation). The phase of the obtained product, the morphology observed under the scanning electron microscope and the degradation diagram of the photocatalytic degradation of rhodamine B are as follows Figure 7-9 As shown, it can be seen that the product is a uniform, monodisperse regular hexagonal ZnO nanosheet with a diameter of 79-171 nm and a thickness of 37-73 nm.

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Abstract

The invention relates to a monodisperse ZnO micro / nano material, and a preparation method and application thereof. The ZnO micro / nano material is monocrystalline hexagonal sheets, bowls, rings or seals, wherein the diameters of the sheets, bowls and seals are 0.73-1.55 mu m, and the thickness is 0.37-1.09 mu m; and the internal diameter of the rings is 48-531nm, the external diameter is 111-648n, and the height is 53-610nm. The method comprises the following steps: by using zinc acetate as a zinc source, dimethylsulfoxide as an alkali and etching agent and water and dimethylsulfoxide as a mixed solvent, carrying out liquid-phase precipitation to obtain ZnO sheets; and carrying out preferential adsorption and etching reaction on the (0001) surface of the ZnO hexagonal sheets by using dimethylsulfoxide to prepare the hexagonal bowls, rings and seals. The method has the advantages of simple equipment, low temperature, short period, low energy consumption, favorable repetitiveness and the like, and can implement large-scale production. The ZnO micro / nano material has the characteristics of favorable monodispersity, favorable uniformity, adjustable shape and size, and the like, and has wide application prospects in the fields of photocatalysis, piezoelectric effects, optoelectronics, photoelectric conversion, gas sensing and the like.

Description

technical field [0001] The invention relates to the technical field of ZnO nanometer materials, in particular to a simple method for preparing monodisperse ZnO micronanomaterials. Background technique [0002] ZnO is an important multifunctional semiconductor material, which is widely used in photocatalysis, piezoelectric effect, optoelectronics, photoelectric conversion and gas sensing due to its unique optical and electrical properties. The performance of ZnO nanomaterials is closely related to its morphology, size and crystallinity. Therefore, by adjusting the morphology and microscopic size of nanostructures, the properties of materials can be adjusted, which is of great significance for further developing the application fields of materials. Among them, sheet, bowl, and ring nanostructures have unique physical and chemical properties due to their special geometric shapes, and have potential applications in the fields of optics, electricity, magnetism, catalysis, storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00
CPCB82Y30/00C01G9/02C01P2002/72C01P2004/03C01P2004/04C01P2004/22C01P2004/30C01P2004/62C01P2004/64
Inventor 童国秀崔婷婷李亚娜钱瑶邵雅丽吴文华乔儒宫培军
Owner ZHEJIANG NORMAL UNIVERSITY
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