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A kind of preparation method of zno double flower head structure and the product obtained therefrom

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 effect, poor morphology uniformity, poor repeatability, etc., and achieve low price of raw materials, special morphology, and good performance. Effect

Inactive Publication Date: 2017-08-25
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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  • A kind of preparation method of zno double flower head structure and the product obtained therefrom
  • A kind of preparation method of zno double flower head structure and the product obtained therefrom
  • A kind of preparation method of zno double flower head structure and the product obtained therefrom

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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, it can be seen from the figure 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 p...

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, comprising the following steps: adding divalent zinc salt into a mixed solvent of ethylene glycol and water, and stirring to obtain a transparent solution; continuing to drop a certain amount of ethanolamine to obtain Precursor solution; using solvothermal method to heat the precursor solution to 130-170 ℃ for a period of time; after the reaction, centrifuge and wash to obtain the ZnO double flower head structure. The raw material required by the invention is cheap, the reaction process is simple, and the size distribution range of the product is narrow, which is of great significance to the fine regulation and large-scale application of the double flower head ZnO structure. The obtained ZnO double-flower head structure has good repeatability, high yield, and controllable particle size, and has good development prospects in the fields of photoelectric conversion and photocatalysis.

Description

technical field [0001] The invention relates to a method for preparing a ZnO micro-nano structure and a product obtained, in particular to a method for preparing a ZnO double flower head structure and a product obtained. Background technique [0002] ZnO is an important semiconductor oxide material, which has a wide direct band gap (3.37eV) and a large exciton binding energy (60meV), and can realize stimulated emission of ultraviolet light at room temperature, and has been widely used in recent years. It has great development prospects in the fields of light-emitting diodes, dye-sensitized solar cells, photocatalysis, gas-sensitive materials, and biosensors. At present, scholars at home and abroad can obtain ZnO micro-nanostructures with different shapes by using different synthesis methods, and focus on studying the growth habit and mechanism of ZnO and its composite materials, and exploring the mechanism of influence between structure and performance. One of the research ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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