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

Preparation method of ferric oxide and zinc oxide nanometer composite material

A technology of zinc oxide nano and composite materials, which is applied in the field of preparation of iron oxide-zinc oxide nano composite materials, can solve the problems of long reaction time, serious powder aggregation, poor dispersion, etc., and achieve the goal of shortening the time and improving the photocatalytic performance Effect

Inactive Publication Date: 2011-07-27
NORTHWESTERN POLYTECHNICAL UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The document "Aracely Hernandez, Lourdes Maya, et al.Sol-gel synthesis, characterization and photocatalytic activity of mixed oxide ZnO-Fe2O3, Journal of sol-gel science and technology, 42(2007), 71-78" discloses an oxidation The preparation method of iron-zinc oxide nanocomposites adopts the sol-gel method, by using zinc acetate and ferric chloride as precursors, ammonia water as a precipitant, controlling the pH of the solution, aging at 80 ° C for 24 hours, and the reaction The time is too long, reaching 24h, and the prepared powder is seriously aggregated, poorly dispersed, generally granular, and its photocatalytic performance is only doubled.

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 ferric oxide and zinc oxide nanometer composite material
  • Preparation method of ferric oxide and zinc oxide nanometer composite material
  • Preparation method of ferric oxide and zinc oxide nanometer composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: 4mmol of nano iron oxide and 1mmol of zinc nitrate were ultrasonically dispersed in 30ml of deionized water, and then 7.5mmol of sodium hydroxide was added, fully stirred and mixed evenly. Add the above solution into a 100ml polytetrafluoroethylene container, tighten the reaction container, put it into a microwave reactor, heat it to 160°C at a heating rate of 18°C / min, and keep it warm for 1h; after cooling down to room temperature, put Pour out the solution in the reaction vessel, then repeatedly wash and filter with deionized water and absolute ethanol until the pH value of the filtered deionized water is neutral; place the obtained red precipitate in an oven at 80°C for 12 hours .

Embodiment 2

[0017] Example 2: 3mmol of nano iron oxide and 1mmol of zinc nitrate were ultrasonically dispersed in 40ml of deionized water, and then 4mmol of sodium hydroxide was added, fully stirred and mixed evenly. Add the above solution into a 100ml polytetrafluoroethylene container, tighten the reaction container, put it into a microwave reactor, heat it to 165°C at a heating rate of 19°C / min, and keep it warm for 0.5h; after cooling down to room temperature, Pour out the solution in the reaction vessel, and then repeatedly wash and filter with deionized water and absolute ethanol until the pH value of the filtered deionized water is neutral; place the obtained red precipitate in an oven at 90°C to dry 11h.

Embodiment 3

[0018] Example 3: 3mmol of nano iron oxide and 1.5mmol of zinc nitrate were ultrasonically dispersed in 40ml of deionized water, and then 7.5mmol of sodium hydroxide was added, fully stirred and mixed evenly. Add the above solution into a 100ml polytetrafluoroethylene container, tighten the reaction container, put it into a microwave reactor, heat it to 170°C at a heating rate of 20°C / min, and keep it warm for 0.3h; after cooling down to room temperature, Pour out the solution in the reaction vessel, and then repeatedly wash and filter with deionized water and absolute ethanol until the pH value of the filtered deionized water is neutral; place the obtained red precipitate in an oven at 95°C to dry 10.5h.

[0019] From figure 1 It can be seen that the iron oxide-zinc oxide composite material prepared in this embodiment is an iron oxide-zinc oxide composite material; figure 2 It can be seen from the figure that in the iron oxide-zinc oxide composite material prepared in this...

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of a ferric oxide and zinc oxide nanometer composite material, which is used for solving the technical problem of long reaction time of the traditional preparation method of the ferric oxide and zinc oxide nanometer composite material. In the technical scheme, a ferric oxide and zinc oxide nanometer composite material with regular shape and high crystallinity is prepared at lower temperature within shorter time by adopting a microwave assisted hydrothermal method; and compared with a method adopted in the background art, the reaction time for preparation is shortened to 0.5-1 hour from 24 hours, the time is shortened by more than 20 times, and meanwhile, the photocatalytic performance is improved by 3.5 times.

Description

technical field [0001] This patent relates to a preparation method of a nanocomposite material, in particular to a preparation method of an iron oxide-zinc oxide nanocomposite material. Background technique [0002] Iron oxide is a common and versatile metal oxide semiconductor with a narrow bandgap, which has a wide range of applications in photocatalysis, gas sensors, catalysts, and dyes. However, as a very important class of metal oxide semiconductors, their photocatalytic performance is not ideal. Therefore, in order to improve their photocatalytic performance, it is an effective way to combine them with other semiconductor materials to form a core-shell structure. At present, due to the relatively large band gap of titanium dioxide and zinc oxide, the utilization rate of light is restricted, and they can only be used under ultraviolet light; while iron oxide has a narrow band gap, high light utilization rate, but poor photocatalysis. If a very efficient and convenient ...

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): B01J23/80B82Y30/00B82Y40/00
Inventor 晏韦樊慧庆
Owner NORTHWESTERN POLYTECHNICAL UNIV
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