Method for synthesizing zinc oxide particle

A technology of zinc oxide particles and synthesis method, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of high energy consumption, complex equipment, uneconomical and other problems, and achieve the effects of high purity, low equipment requirements and stable performance

Inactive Publication Date: 2008-05-28
NANJING UNIV
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Problems solved by technology

The high-temperature preparation of ZnO is not only uneconomical due to high energy consumption and comple...

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  • Method for synthesizing zinc oxide particle
  • Method for synthesizing zinc oxide particle

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Embodiment 1

[0030] A total of 17 g of a ternary solution system of 0.15M sodium hydroxide aqueous solution (4.7%) / polyvinylpyrrolidone (0.6%) / n-amyl alcohol (94.7%) was prepared in a covered reaction vessel; then 0.6 g of zinc nitrate (0.1 M) The ethanol solution was added to the system under stirring, and the stirring was continued for 30 minutes at room temperature at 35°C for 36 hours; the standing reaction solution was centrifuged to obtain high-purity double-layer zinc oxide particles. 1a.

Embodiment 2

[0032] A total of 17.1 g of a ternary solution system of 0.15M sodium hydroxide aqueous solution (4.7%) / polyvinylpyrrolidone (1.2%) / n-amyl alcohol (94.1%) was prepared in a covered reaction vessel; then 0.6 g of zinc nitrate ( 0.1M) ethanol solution was added to the system under stirring, and the stirring was continued for 30 minutes at room temperature at 35°C for 36 hours; the standing reaction solution was centrifuged to obtain high-purity quasi-double-layer zinc oxide particles. See Figure 1b.

Embodiment 3

[0034] A total of 17.2 g of a ternary solution system of 0.15M sodium hydroxide aqueous solution (4.7%) / polyvinylpyrrolidone (1.8%) / n-amyl alcohol (93.5%) was prepared in a covered reaction vessel; then 0.6 g of zinc nitrate ( 0.1M) ethanol solution was added to the system under stirring, and the stirring was continued for 30 minutes at room temperature at 35°C for 36 hours; the standing reaction solution was centrifuged to obtain high-purity single-layer zinc oxide particles. Figure 1c.

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Abstract

The invention discloses a synthesis method of zinc oxide particles, which includes the following steps: preparing three elements solution of sodium hydroxide, polyvinylpyrrolidone and n-amyl alcohol; stirring zinc nitrate alcohol solution while adding the three elements solution, continuously stirring for 10 to 30 minutes at 30 to 40 DEG C, then standing silent for 24 to 72 hours; carrying out centrifugation on the reaction solution after standing and removing liquid, thereby, the zinc oxide particles of high purity are achieved. The invention uses the polyvinylpyrrolidone as promoting agent and guiding agent for the crystallization of oxide zinc, which not only realizes the crystallization of zinc oxide at room temperature, but also realizes the regulation of luminescence band-gap of zinc oxide particles through the simple change of experimental parameters to lead the free regulating of zinc oxide appearance among the structures of single layer, quasi double layer, double layer and one dimension.

Description

technical field [0001] The invention relates to a method for synthesizing zinc oxide particles. Background technique [0002] Because of its large band gap of 3.37 eV and large exciton binding energy of 60 meV, ZnO has a wide range of applications in sensors, biomedicine, room temperature UV lasers, light-emitting diodes, solar cells, etc. and has become one of the hottest research topics. The route of preparing zinc oxide at high temperature is not only uneconomical due to high energy consumption and involving complex equipment, but also the obtained zinc oxide product usually contains a large number of point defects [1-6] . Therefore, the route of preparing zinc oxide in large quantities at low temperature has become the first choice to realize the practical application of zinc oxide. [0003] references: [0004] [1] W. L. Hughes, Z. L. Wang, Appl. Phys. Lett. 86 (2005) 043106. [0005] [2] L. E. Greene, M. Law, J. Goldberger, F. Kim, J. C. Johnson, Y. Zhang, R. J. Sa...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 章建辉刘淮涌王振林闵乃本
Owner NANJING UNIV
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