Preparation method of ZnO semispherical micro-nanostructure and obtained product

A micro-nanostructure, hemispherical technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of poor size control effect, poor morphology uniformity, low crystallinity, etc. Achieving good market application prospects, good appearance and good performance

Inactive Publication Date: 2015-09-09
UNIV OF JINAN
View PDF3 Cites 7 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of ZnO semispherical micro-nanostructure and obtained product
  • Preparation method of ZnO semispherical micro-nanostructure and obtained product
  • Preparation method of ZnO semispherical micro-nanostructure and obtained product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1.1 Add 0.439 g of zinc acetate to a mixed solvent of 30 mL of ethylene glycol and 1 mL of water and stir until clear;

[0034] 1.2 Add 3 mL of ethanolamine dropwise to the above solution and stir evenly;

[0035] 1.3 Transfer the above solution to the reactor and react at 150 °C for 12 h;

[0036] 1.4 After the reaction, the product was obtained after centrifugation and washing.

[0037] SEM of the product as figure 1 and figure 2 It can be seen from the figure that the obtained product is a solid hemispherical structure formed by the close arrangement of ZnO particles and ZnO rods. The diameter of the ZnO hemispherical structure is 1.5-1.7 μm, and the diameter of the central part is 0.9-1.1 μm , consisting of ZnO particles with a size of 0.04-0.06 μm, the outer layer part is composed of ZnO rods with a diameter of 0.04-0.06 μm and a length of 0.27-0.30 μm, and the ZnO rods are closely arranged along the diameter of the ball.

[0038] The XRD pattern of the produc...

Embodiment 2

[0041] 2.1 Add 0.525 g of zinc nitrate hexahydrate to a mixed solvent of 30 mL of ethylene glycol and 0.8 mL of water and stir until clear;

[0042] 2.2 Add 3.6 mL of ethanolamine dropwise to the above solution and stir evenly;

[0043] 2.3 Transfer the above solution to the reactor and react at 130 °C for 2 h;

[0044] 2.4 After the reaction is over, the product is obtained after centrifugation and washing.

[0045]The obtained product is a solid hemispherical structure formed by the close arrangement of ZnO particles and ZnO rods. The diameter of the ZnO hemispherical structure is 0.23-0.26 μm, and the diameter of the central part is 0.14-0.16 μm. The outer layer is composed of ZnO rods with a diameter of 0.02-0.03 μm and a length of 0.04-0.06 μm, and the ZnO rods are closely arranged along the diameter of the ball.

[0046] 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...

Embodiment 3

[0048] 3.1 Add 0.875 g of zinc nitrate hexahydrate to a mixed solvent of 30 mL of ethylene glycol and 1.2 mL of water and stir until clear;

[0049] 3.2 Add 4.5 mL of ethanolamine dropwise to the above solution and stir evenly;

[0050] 3.3 Transfer the above solution to the reactor and react at 170 °C for 26 h;

[0051] 3.4 After the reaction is over, the product is obtained after centrifugation and washing.

[0052] The obtained product is a solid hemispherical structure formed by the close arrangement of ZnO particles and ZnO rods. The diameter of the ZnO hemispherical structure is 9.2-9.6 μm, and the diameter of the central part is 3.6-3.8 μm. The outer part is composed of ZnO rods with a diameter of 0.25-0.28 μm and a length of 2.7-2.9 μm, and the ZnO rods are closely arranged along the diameter direction of the ball.

[0053] 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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a ZnO micro-nanostructure. The preparation method comprises the following steps: adding a bivalent zinc salt into a mixed solvent of ethylene glycol and water, and stirring to obtain a transparent solution; continuously dropwise adding a certain amount of ethanolamine to obtain a precursor solution, heating the precursor solution to 130-170 DEG C by using a solvent thermal method, and preserving the heat for a certain period of time; and performing centrifugal separation and washing after reaction to obtain a ZnO semispherical structure with a controllable shape. The preparation method disclosed by the invention is low in price of the required raw materials, simple in reaction process, and narrow in product size distribution range, and has very important significance for fine regulation and control and large-scale application of the ZnO semispherical structure. The obtained ZnO semispherical structure is good in repeatability, high in yield, and controllable in particle size, and has relatively good development prospects in the fields of photoelectric conversion, photocatalysis and the like.

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 hemispherical micro-nano structure and a product obtained. Background technique [0002] ZnO is an important semiconductor oxide material, which has a wide direct band gap (3.37 eV) and a large exciton binding energy (60 meV), and can realize stimulated emission of ultraviolet light at room temperature. It is used in light-emitting diodes, dye-sensitized solar cells, photocatalysis, gas-sensitive materials, biosensors and other fields, and its development prospects are very huge. 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 hotspots in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01G9/02B82Y30/00
Inventor 马谦陈玲车全德王俊鹏傅琳景杨萍
Owner UNIV OF JINAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap