Mg doped zinc oxide luminescent nanoparticle and the preparation method thereof

A nanoparticle and zinc oxide technology, which is applied in the field of nanomaterials, can solve the problems that the product only has ultraviolet fluorescence, and the ultraviolet emission peak shifts.

Inactive Publication Date: 2009-10-28
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the previous research work of colleagues at home and abroad, Mg 2+ 、Cd 2+ , Mn 2+ , Fe 2+ etc. are doped into the lattice of ZnO nanomaterials, but the obtained products are alloy materials with

Method used

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  • Mg doped zinc oxide luminescent nanoparticle and the preparation method thereof
  • Mg doped zinc oxide luminescent nanoparticle and the preparation method thereof
  • Mg doped zinc oxide luminescent nanoparticle and the preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 0.002mol zinc acetate ZnAc 2 2H 2 O and 0.003mol lithium hydroxide LiOH·H 2 O powder was added to 40 ml of tetraethylene glycol TEG, and after stirring at room temperature for several hours, a clear luminescent solution was obtained, in which the zinc salt concentration was 0.05 mol / L. Then, add magnesium acetate MgAc 2 4H 2 O powder, stirring and dissolving, where the molar ratio Mg / Zn=0. Insert an ultrasonic probe of metal titanium into the solution, at an intensity of 1000W / cm 2 , working continuously for 2 minutes at a frequency of 20kHz, at this time the solution temperature has risen to about 180°C. Immediately after, the solution was rapidly cooled in an ice-water bath, and finally stored at room temperature. Add 150mL of ethyl acetate to the solution to precipitate ZnO. After centrifugation, it can be dissolved in non-aqueous solvents such as ethanol, and then perform various spectral measurements and transmission electron microscope analysis. The quantum ...

Embodiment 2

[0018] The preparation method and testing process are the same as in Example 1, but the molar ratio Mg / Zn=0.1.

Embodiment 3

[0020] The preparation method and testing process are the same as in Example 1, but the molar ratio Mg / Zn=0.2.

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Abstract

The invention belongs to the technical field of nanometer material, particularly relates to a Mg ion doped zinc oxide luminescent nanoparticle and the preparation method thereof. The main component of the nanoparticle is ZnO, and Mg ions are uniformly distributed inside ZnO; controlling the Mg content in ZnO nanoparticle can enable the nanoparticle to turn from the crystalline state into the non-crystalline state, so that the high efficiency luminescence of ZnO nanoparticle in a visible region can be realized; meanwhile, the luminescence wavelength of the ZnO nanoparticle is modulated from that of yellow light into that of blue light; more important, ultrasonic synthesis provides a specific environment as a chemical preparation method, the nanoparticle doping process generally requiring high temperature reaction is rapidly completed under the condition of lower temperature, therefore, the damage of high temperature environment on the ZnO luminescence performance can be avoided.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a preparation method of highly efficient luminous zinc oxide nanoparticles. Background technique [0002] As a semiconductor, ZnO (zinc oxide) has many superior characteristics: the gap between the valence band and the conduction band is wide (3.37eV), the exciton binding energy is quite large (about 60meV at room temperature), non-toxic and harmless, and low cost, etc. Wait. These advantages make ZnO inherently a practical optoelectronic material. Compared with CdSe, CdTe and other luminescent nanocrystals, the outstanding advantages of ZnO are non-toxic and cheap. In fact, ZnO particles have been widely used in cosmetics, medicines, paints and other daily commodities, and the cost of laboratory synthesis of ZnO nanoparticles is only about one tenth of that of CdSe, CdTe and other nanomaterials. In recent years, the basic research on ZnO in academia has focused on...

Claims

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Application Information

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IPC IPC(8): C09K11/55
Inventor 熊焕明
Owner FUDAN UNIV
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