Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of flower-like nano zinc oxide

A nano-zinc oxide and flower-shaped technology, applied in the field of nano-materials, can solve the problems of easy aggregation of particles, affecting the performance of final products, changes in shape and size, etc., and achieve the effects of easy recycling, low production cost and low price

Inactive Publication Date: 2017-04-26
NORTHEAST FORESTRY UNIVERSITY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the huge surface energy of nano-ZnO, the particles are easy to agglomerate, which changes the shape and size of the nano-ZnO, which seriously affects the performance of the final product.
In addition, it will undergo severe photocorrosion under the condition of ultraviolet light irradiation.

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
  • A kind of preparation method of flower-like nano zinc oxide
  • A kind of preparation method of flower-like nano zinc oxide
  • A kind of preparation method of flower-like nano zinc oxide

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific embodiment one: the preparation method of flower-shaped nano-zinc oxide in the present embodiment is carried out according to the following steps:

[0019] Dissolve 10 g of rosin in 100 mL of absolute ethanol to make a 0.1 g / mL alcoholic solution of rosin.

[0020] 5 g of zinc acetate was dissolved in 30 mL of deionized water to obtain a zinc acetate solution.

[0021] Add 20mL of rosin alcohol solution to 90mL of 2mol / L sodium hydroxide solution prepared by sodium hydroxide and deionized water, stir and mix evenly, then slowly add zinc acetate solution dropwise under ice-water bath and stirring conditions, Control the drop rate to 1.5mL / min; then age at room temperature for 2 hours, pour into a high-pressure hydrothermal reactor lined with polytetrafluoroethylene, place in a 75°C oven for hydrothermal reaction for 12 hours, cool and crystallize naturally for 1 hour, and suction filter , the precipitate was washed 3 times with absolute ethanol and then 3 times...

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment differs from Embodiment 1 in that: 20 mL of rosin alcohol solution is added to 60 mL of sodium hydroxide solution with a concentration of 3 mol / L. Other steps and parameters are the same as in the first embodiment.

[0025] Using 0.1g of the flower-shaped nano-zinc oxide prepared by the method of this embodiment, catalytic degradation of 100mL concentration of 5mg / L methylene blue solution under the irradiation of an 18W ultraviolet lamp, continued stirring for 2.5h, and the degradation rate was nearly 100% (see Figure 5 ).

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment is different from Embodiment 1 in that: 20 mL of rosin alcohol solution is added to 45 mL of sodium hydroxide solution with a concentration of 4 mol / L. Other steps and parameters are the same as in the first embodiment.

[0027] Depend on image 3 It can be seen that the nanorods formed by zinc oxide have a length of 400 nanometers and a width of about 90 nanometers.

[0028] Depend on Figure 4 It can be seen that the calcined product is pure zinc oxide, does not contain other impurities, and has high crystallinity.

[0029] Using 0.1g of the flower-shaped nano-zinc oxide prepared by the method of this embodiment, catalytic degradation of 100mL concentration of 5mg / L methylene blue solution under the irradiation of an 18W ultraviolet lamp, continued stirring for 2.5h, and the degradation rate was nearly 100% (see Figure 5 ).

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
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of flower-shaped nano zinc oxide; and relates to a preparation method of nano zinc oxide. The purpose of the present invention is to prepare a nanometer zinc oxide with characteristics such as high crystallinity, high stability, large specific surface area, and no agglomeration. The present invention uses cheap and easily available rosin as surfactant to prepare nanoscale zinc oxide. The method of the present invention is as follows: add the alcohol solution of rosin to the sodium hydroxide solution, mix evenly, and then slowly add the zinc acetate solution dropwise in an ice-water bath and stirring conditions; then age it at room temperature, and then perform a hydrothermal reaction. After natural cooling and crystallization, suction filtration, washing and precipitating, drying and calcining, flower-like nano-zinc oxide is obtained. The product obtained by the invention has no agglomeration, large specific surface area, high photocatalytic activity, simple hydrothermal synthesis process, low production cost, and can realize industrial production.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, relates to a preparation method of nanometer zinc oxide, and specifically relates to a preparation method of nanometer zinc oxide with characteristics such as large specific surface area, high catalytic activity and strong stability. Background technique [0002] With the rapid development of modern industry, a large amount of industrial wastewater containing organic poisons is discharged into the environment, causing serious pollution of water resources and threatening the survival and development of human beings. In particular, some azo dyes, polyhalogenated hydrocarbons and nitroaromatic compounds have stable structures, strong toxicity, and great difficulty in handling, making traditional environmental engineering techniques ineffective. Therefore, there is an urgent need to find new, more suitable and effective wastewater treatment methods to make up for the shortcomings of previ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y30/00B82Y40/00B01J23/06
CPCB82Y30/00B82Y40/00C01G9/02B01J23/06C01P2002/72C01P2004/03C01P2004/04C01P2004/30C01P2004/61C01P2006/12B01J35/39
Inventor 郭元茹赵润民潘清江闫龙飞刘远
Owner NORTHEAST FORESTRY UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com