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Tactic zinc oxide granular one dimension mesoporous nano belt and precursor and its preparing method

A technology of zinc oxide particles and zinc oxide nanometers, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of harsh control conditions, high production costs, and stagnation, and achieve stable product quality, low cost, and easy industrial production Effect

Inactive Publication Date: 2006-06-07
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires complex equipment and technical conditions, and the control conditions are harsh. Under certain vacuum conditions, the reaction temperature must reach 1150 ° C, and the production cost is relatively high. , rather than materials with one-dimensional nanostructures
[0003] At present, although there are a large number of reports on the preparation methods of ZnO particles and ZnO nanobelts in domestic and foreign literatures, there have been no reports on the preparation methods of tropistic ZnO particles and their precursors.

Method used

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  • Tactic zinc oxide granular one dimension mesoporous nano belt and precursor and its preparing method
  • Tactic zinc oxide granular one dimension mesoporous nano belt and precursor and its preparing method
  • Tactic zinc oxide granular one dimension mesoporous nano belt and precursor and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Precursor for preparing mesoporous nanoribbons with oriented zinc oxide particles

[0019] Mix 0.1M zinc acetate aqueous solution with 0.1M hydrazine hydrate or 0.1M ethylenediamine aqueous solution in the same volume, the original clear solution becomes cloudy immediately, after stirring evenly, let it stand at room temperature for 2 hours, a large amount of flocculent After centrifugation, the precipitate was collected and dried to obtain a solid product.

[0020] The structure, chemical composition and morphology of the solid product were characterized by X-ray diffraction, chemical composition analysis and transmission electron microscopy.

[0021] figure 1 It is the X-ray diffraction pattern of the product of the present embodiment. The abscissa of the spectrum is the 2θ angle, and the ordinate is the relative intensity of diffraction. However, there is no powder diffraction card corresponding to all the diffraction peaks in the spectrum in the JCPDS ...

Embodiment 2

[0026] Example 2: Preparation of one-dimensional mesoporous nanobelts with oriented zinc oxide particles from precursors

[0027] Calcining the precursor of the mesoporous nanoribbons of oriented zinc oxide particles obtained in Example 1 at 700° C. in air for 3 hours, a white solid product can be obtained.

[0028] The structure and morphology of the white solid product were characterized by X-ray diffraction, transmission electron microscopy and electron diffraction:

[0029] figure 2 It is the X-ray diffraction pattern of the product of the present embodiment. The abscissa of the spectrum is the 2θ angle, and the ordinate is the relative intensity of diffraction. Comparing the spectrum with the powder diffraction card JCPDS 01-1136, all the diffraction peaks in the spectrum can correspond to the powder diffraction card JCPDS 01-1136, which proves that the product is hexagonal phase zinc oxide. It can be seen from the spectrum that, except for the diffraction peak of zin...

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Abstract

The present invention features that zinc acetate aqua in 0.001-5M concentration reacts with hydrazine hydrate and ethylene diamine aqua to obtain milky sol, and the sol is deposited to separate and stoved to obtain the one-dimensional nanometer belt structure precursor of ZnO.xZn(CH3COO)2.yH2O (x=0.15 and y=0.85) and in decades micron to several mm length, 200-500 nm width and 10-30 nm thickness; and the precursor is annealed at 300-1100 deg C to obtain the tactic one-dimensional mesoporous zinc oxide grain nanometer belt with pore size of 10-80 nm and zinc oxide grains in 10-30 nm size and [001] orientation. The product of the present invention may be used in producing gas sensor, catalyst, image record material, piezoelectric material, optical material, etc. and the process of the present invention has fast reaction speed, low power consumption, low cost and easy application in industrial production.

Description

Technical field: [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to one-dimensional mesoporous nanobelts with tropic zinc oxide particles, their precursors and their preparation methods. Background technique: [0002] Zinc oxide is one of the raw materials that play an important role in the national economy. "Journal of the American Chemical Society" (J.Am.Chem.Soc., 125 volumes 11299 to 11305 pages in 2003) reported that cage-like and shell-like polyhedral structures were prepared by vacuum thermal evaporation deposition, and the walls of these polyhedrons were made of oxidized The zinc particles tend to be arranged and assembled, and because there are nanometer-sized pores between the particles, there is a characteristic of a mesoporous structure. However, this method requires complex equipment and technical conditions, and the control conditions are harsh. Under certain vacuum conditions, the reaction temperature m...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 桂宙刘健
Owner UNIV OF SCI & TECH OF CHINA
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