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Multilevel-structure zinc oxide constructed by three dimension units and preparation method thereof

A zinc oxide and dimension technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of single construction mode and high working temperature of multi-level structure zinc oxide

Inactive Publication Date: 2010-07-07
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to solve the problem that the construction mode of the multi-level structure zinc oxide prepared by the existing vapor deposition, microwave synthesis or hydrothermal / solvothermal synthesis method is relatively single, and The prepared gas sensor has the problem of high working temperature when detecting ethanol, and provides a multi-level structure zinc oxide composed of three dimensional units and its preparation method

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  • Multilevel-structure zinc oxide constructed by three dimension units and preparation method thereof
  • Multilevel-structure zinc oxide constructed by three dimension units and preparation method thereof
  • Multilevel-structure zinc oxide constructed by three dimension units and preparation method thereof

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specific Embodiment approach 1

[0013] Specific Embodiment 1: The zinc oxide multi-level structure constructed by three dimensional units in this embodiment is one-dimensional nanowires and nanowires with a diameter of 30 nm to 50 nm composed of zinc oxide zero-dimensional nanoparticles with a particle size of 8 nm to 12 nm. Weave to form cobweb-like two-dimensional nanosheets with a length of 1 μm-4 μm and a width of 1 μm-2 μm, and the two-dimensional cobweb-like nanosheets are further constructed into flower-shaped zinc oxide with a diameter of 6 μm-10 μm.

[0014] In this embodiment, the multi-level zinc oxide structure constructed by three-dimensional units is constructed from the lowest level of zero-dimensional nanoparticles. The zero-dimensional nanoparticles form one-dimensional nanowires, and then the nanowires are woven to form a cobweb-like two-dimensional nanometer. sheet, and then the two-dimensional cobweb-like nanosheets are further constructed into a flower-like multi-level zinc oxide structur...

specific Embodiment approach 2

[0015] Specific implementation mode 2: The multi-level structure zinc oxide constructed by three dimensional units in this embodiment, its multi-level structure is composed of zinc oxide zero-dimensional nanoparticles with a particle size of 8.5nm-11nm and a diameter of 35nm-48nm. Two-dimensional nanowires and nanowires are woven to form cobweb-like two-dimensional nanosheets with a length of 1.5 μm to 3.6 μm and a width of 1.2 μm to 1.8 μm. shaped zinc oxide.

specific Embodiment approach 3

[0016] Specific embodiment three: the multi-level structure zinc oxide constructed by three dimensional units in this embodiment, its multi-level structure is composed of zinc oxide zero-dimensional nanoparticles with a particle size of 9nm to 10.5nm and a diameter of 38nm to 40nm. Two-dimensional nanowires and nanowires are woven into cobweb-like two-dimensional nanosheets with a length of 1.8 μm to 3.0 μm and a width of 1.3 μm to 1.7 μm, and the two-dimensional cobweb-like nanosheets are further constructed into flower-shaped zinc oxide with a diameter of 9 μm .

[0017] In this embodiment, the multi-level zinc oxide structure constructed by three-dimensional units is constructed from the lowest level of zero-dimensional nanoparticles. The zero-dimensional nanoparticles form one-dimensional nanowires, and then the nanowires are woven to form a cobweb-like two-dimensional nanometer. sheet, and then the two-dimensional cobweb-like nanosheets are further constructed into a flow...

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Abstract

The invention discloses multilevel-structure zinc oxide constructed by three dimension units and a preparation method thereof, relating to the multilevel-structure zinc oxide and the preparation method thereof. The invention solves the problems that the multilevel-structure zinc oxide prepared by the existing vapor deposition, microwave synthesis or water heating / solvent heating method has a single construction mode, and the prepared gas sensor has high working temperature in detecting ethanol. The multilevel-structure zinc oxide constructed by three dimension units is characterized in that zero-dimensional nano-particles form one-dimensional nano-wires, the nano-wires are waved to form spider net-shaped two-dimensional nano-pieces, and the nano-pieces form flower-shaped zinc oxide. The method comprises the following steps: adding the methanol solution of potassium hydroxide into the methanol solution of zinc acetate, firstly heating for reflux, standing for heat insulation, drying and heat-treating to obtain powder. If a substrate is put after the step of heating for reflux, the multilevel-structure film of zinc oxide is obtained. When the gas sensor prepared by the material detects ethanol, the working temperature is 150-250 DEG C. The material is used for gas transducers and the fields of photocatalysis.

Description

technical field [0001] The invention relates to a multi-level structure zinc oxide and a preparation method thereof. Background technique [0002] Zinc oxide (ZnO) is an important II-VI semiconductor oxide. It is a wide band gap and direct band gap N-type semiconductor material. It has a band gap of 3.3eV at room temperature and has a large exciton binding energy (60meV ), guaranteeing its room temperature UV laser emission. Zinc oxide belongs to the P6mm point group of the hexagonal system and has a wurtzite structure. This structure is suitable for the growth of high-quality oriented epitaxial films, so it is a thin film material with multiple functions such as semiconductivity, piezoelectricity, pyroelectricity, photoconductivity and fluorescence. Star-shaped, spherical, tower-shaped, lattice-shaped, flower-shaped, leaf-shaped zinc oxide nanomaterials with multi-level structures, because they not only maintain the original special properties of nanomaterials, but also h...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 程晓丽霍丽华徐英明高山赵辉
Owner HEILONGJIANG UNIV
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