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Dumb-bell-like zinc oxide particles and preparing method and use

A zinc oxide particle, dumbbell-shaped technology

Inactive Publication Date: 2007-11-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are very few reports on the preparation of dumbbell-shaped zinc oxide. Zhang, H et al. have used high-temperature hydrothermal method (about 200 ° C) to prepare dumbbell-shaped zinc oxide (see Zhang, H.; Yang, D.R.; Li, D.S.; Ma , X.Y.; Li, S.Z.; Que, D.L., Crystal.Growth & Design, 2005, 5(2), 547~550), but this method has strict requirements on synthetic equipment, harsh experimental conditions, and long reaction period (more than 10 hours) , and requires complex post-processing

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1). Prepare the aqueous solution of zinc acetate and triethanolamine respectively, wherein the concentration of zinc acetate in the zinc acetate aqueous solution is 0.027mol / L; The concentration of triethanolamine in the triethanolamine aqueous solution is 0.056mol / L.

[0027] (2). The zinc acetate aqueous solution and the triethanolamine aqueous solution prepared by step (1) are injected into the 10ml Virahol that has been preheated to 75 ℃ simultaneously, and the zinc acetate in the mixed solution: the mol ratio of triethanolamine is 1: 1.25. The mixture was stirred and reacted for 50 minutes.

[0028] (3). The mixture in step (2) was centrifuged, and the resulting precipitate was vacuum-dried to obtain dumbbell-shaped zinc oxide particles with a length of 287 nm, a head width of 167 nm, and a waist width of 152 nm. See attached picture 1. The dumbbell-shaped zinc oxide particles can be used in sensitive films of biosensors.

Embodiment 2

[0030] (1). Prepare the aqueous solution of zinc acetate and triethanolamine respectively, wherein the concentration of zinc acetate in the zinc acetate aqueous solution is 0.085mol / L; The concentration of triethanolamine in the triethanolamine aqueous solution is 0.097mol / L.

[0031] (2). The zinc acetate aqueous solution and the triethanolamine aqueous solution prepared by step (1) are injected into 20ml ethanol that has been preheated to 80°C simultaneously, and the mol ratio of zinc acetate in the mixed solution: triethanolamine is 1: 1. The mixture was stirred and reacted for 70 minutes.

[0032] (3). The mixture in step (2) was centrifuged, and the resulting precipitate was vacuum-dried to obtain dumbbell-shaped zinc oxide particles with a length of 850 nm, a head width of 610 nm, and a waist width of 580 nm. The electron microscope photo of the dumbbell-shaped zinc oxide particles is shown in Figure 2, and the fluorescence spectrum is shown in Figure 3. The dumbbell-sh...

Embodiment 3

[0034] (1). Prepare the aqueous solution of zinc nitrate and diethanolamine respectively, wherein the concentration of zinc nitrate in the zinc nitrate aqueous solution is 0.0165mol / L; The concentration of diethanolamine in the diethanolamine aqueous solution is 0.0396mol / L.

[0035] (2). The zinc nitrate aqueous solution and the diethanolamine aqueous solution prepared by step (1) are injected into 10ml secondary water preheated to 70°C simultaneously, and the mol ratio of zinc nitrate in the mixed solution: diethanolamine is 1: 2. The mixture was stirred and reacted for 30 minutes.

[0036] (3). The mixture in step (2) was centrifuged, and the resulting precipitate was vacuum-dried to obtain dumbbell-shaped zinc oxide particles with a length of 600 nm, a head width of 240 nm, and a waist width of 220 nm. The dumbbell-shaped zinc oxide particle can be used as a sensitive material of a gas sensor.

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Abstract

The invention belongs to the field of semiconductor inorganic materials, particularly those involving dumbbell-shaped zinc oxide (ZnO) particles from hundreds of nanometers to several microns and the preparation method and use of the liquid phase. The direct deposition synthesizes dumbbell-shaped particles in the solution system below 50 to 100 degree C, the length of the obtained dumbbell-shaped zinc oxide particles is 300 nm -2 mu m, the width of head is 200 nm to 1 mu m, the width of waist is 150 nm - 900nm. The conditions of the method are mild, the preparation process is simple and the product's appearance can be controllable. The zinc oxide particles made by the invention can be widely used in electronics, biology, coatings, sensors, ceramics, dielectric materials, catalysis, stealth materials and other fields.

Description

technical field [0001] The invention belongs to the field of semiconductor inorganic materials, in particular to dumbbell-shaped zinc oxide (ZnO) particles with hundreds of nanometers to several micrometers and a liquid-phase preparation method and application thereof. Background technique [0002] ZnO, commonly known as zinc white, as a semiconductor with wide bandgap, is a highly researched high-function fine inorganic material. Due to its excellent physical and chemical properties, it is widely used in ceramic materials, photoelectric devices, catalysis, varistors, chemicals, coatings, Rubber industry, pharmaceutical and cosmetic industries can be widely used. At present, due to the important influence of structure (microstructure), size and shape on material properties and applications, research on shape control of inorganic materials has aroused great interest. This not only requires the full use of the intrinsic properties of the material, but also the tailoring and a...

Claims

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Application Information

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IPC IPC(8): C09C1/04
Inventor 唐芳琼任湘菱
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI