ZnO double-flower-head structure and preparation method thereof

A flower-like structure and flower head technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of poor size control, poor shape uniformity, poor repeatability, etc., and achieve low raw material prices, special shape, and good performance. Effect

Inactive Publication Date: 2015-09-09
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Limited by the preparation process, poor repeatability, low crystallinity, poor shape uniformity, and poor size control have become the main problems facing high-efficiency ZnO micro-nano structures.

Method used

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  • ZnO double-flower-head structure and preparation method thereof
  • ZnO double-flower-head structure and preparation method thereof
  • ZnO double-flower-head structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1.1 Add 0.439 g of zinc acetate to a mixed solvent of 30 mL of ethylene glycol and 1.5 mL of water and stir until clear;

[0033] 1.2 Add 3 mL of ethanolamine dropwise to the above solution and stir evenly;

[0034] 1.3 Transfer the above solution to the reactor and react at 150 °C for 12 h;

[0035] 1.4 After the reaction, the product was obtained after centrifugation and washing.

[0036] SEM of the product as figure 1 As shown in the figure, it can be seen that the obtained product is a double flower head structure formed by closely arranged ZnO rods. The two flower heads are connected at the bottom, similar in size, and on the same horizontal line. The diameter of each flower head is 2.1-2.5 μm , with a length of 0.8-1.6 μm; the structural unit ZnO rods have a diameter of 0.15-0.22 μm and a length of 0.8-1.6 μm.

[0037] The XRD pattern of the product is as follows figure 2 As shown, the XRD results are consistent with the standard XRD card (36-1451), which pro...

Embodiment 2

[0040]2.1 Add 0.535 g of zinc nitrate hexahydrate to a mixed solvent of 30 mL of ethylene glycol and 1.5 mL of water and stir until clear;

[0041] 2.2 Add 2.7 mL of ethanolamine dropwise to the above solution and stir evenly;

[0042] 2.3 Transfer the above solution to the reactor and react at 130 °C for 2 h;

[0043] 2.4 After the reaction, after centrifugation and washing, the obtained product is a double flower head structure formed by closely arranged ZnO rods, in which the bottoms of the two divergent flower heads are connected, similar in size, and on the same horizontal line. The diameter is 0.12-0.16 μm, and the length is 0.07-0.14 μm; the diameter of its structural unit ZnO rod is 0.06-0.12 μm, and the length is 0.07-0.14 μm.

[0044] The product is irradiated by a 365 nm ultraviolet lamp, and the illuminated area is 1.5cm 2 Under the condition, its photocurrent intensity can reach -1.50×10 -6 a.

Embodiment 3

[0046] 3.1 Add 0.850 g of zinc nitrate hexahydrate to a mixed solvent of 30 mL of ethylene glycol and 1.6 mL of water and stir until clear;

[0047] 3.2 Add 4.5 mL of ethanolamine dropwise to the above solution and stir evenly;

[0048] 3.3 Transfer the above solution to the reactor and react at 170 °C for 27 h;

[0049] 3.4 After the reaction, after centrifugation and washing, the obtained product is a double flower head structure formed by closely arranged ZnO rods, in which two divergent flower heads are connected at the bottom, similar in size, and on the same horizontal line. The diameter of each flower head is 7.2-7.6 μm, the length is 3.0-5.6 μm; the diameter of its structural unit ZnO rod is 0.38-0.45 μm, and the length is 3.0-5.6 μm.

[0050] The product is irradiated by a 365 nm ultraviolet lamp, and the illuminated area is 1.5cm 2 Under the condition, its photocurrent intensity can reach -1.72×10 -6 a.

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Abstract

The invention discloses a preparation method of a ZnO double-flower-head structure. The preparation method of the ZnO double-flower-head structure comprises the following steps: adding divalent zinc salt into a mixed solvent of ethylene glycol and water, and stirring, so that a transparent solution is obtained; continuously dropwise adding right amount of ethanolamine, so that a precursor solution is obtained; heating the precursor solution to 130-170 DEG C by utilizing a solvothermal method, and carrying out heat preservation for a period of time; and carrying out centrifugal separation and washing after reaction is finished, so that the ZnO double-flower-head structure is obtained. The preparation method of the ZnO double-flower-head structure has the advantages that the needed raw materials are available, a reaction technology is simple, the product size distribution range is narrow, and important significance is provided for fine control and large-scale application of the ZnO double-flower-head structure; and the obtained ZnO double-flower-head structure has good repeatability, the yield is high, the particle size is controllable, and the ZnO double-flower-head structure has relatively good development prospects in the fields of photovoltaic conversion, photocatalysis and the like.

Description

Technical field [0001] The present invention involves a preparation method and income product of the ZNO microman structure, which specifically involves the preparation method and product of the ZNO double flower head structure. Background technique [0002] ZNO is an important semiconductor oxide material with a wide direct band (3.37EV) and a large excitement (60MEV). It can achieve the severe launch of ultraviolet light at room temperature. In recent years, it has been widely used in recent years.In the fields of light emitting diode, dye sensitization solar cells, photocatalytic, osteitted materials, biosensor and other fields, its development prospects are huge.At present, scholars at home and abroad can obtain ZNO micro -nano structures with different appearance methods, and focus on studying the growth habits and mechanisms of the growth habits and mechanisms of ZNO and their composite materials.One of the research hotspots in the field. [0003] By selecting the appropria...

Claims

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Application Information

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IPC IPC(8): C01G9/02
Inventor 马谦陈玲王俊鹏车全德傅琳景杨萍
Owner UNIV OF JINAN
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