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

Size-controllable transition metal oxide ultrafine nano-particles and rapid preparation method and application thereof

A transition metal, ultra-fine nano technology, applied in the directions of iron oxide, nanotechnology, nanotechnology, etc., can solve the problems of increasing preparation steps and consumption costs, and achieve the solution of large and uncontrollable size, good dispersibility, and uniform particle size. Effect

Pending Publication Date: 2021-07-23
ANHUI NORMAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The patent publication No. CN106865625A published on June 20, 2017 discloses a nanosheet composed of transition metal oxide nanoparticles and its preparation method. Adding templates increases the preparation steps and consumes costs.

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
  • Size-controllable transition metal oxide ultrafine nano-particles and rapid preparation method and application thereof
  • Size-controllable transition metal oxide ultrafine nano-particles and rapid preparation method and application thereof
  • Size-controllable transition metal oxide ultrafine nano-particles and rapid preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A rapid preparation method for size-controllable NiO ultrafine nanoparticles, comprising the following steps:

[0054] 1) Weigh 15.5g of nickel sulfate hexahydrate and dissolve it in 35mL of deionized water to form a 1.69mol / L A solution;

[0055] 2) Weigh 5.1g of NaOH and dissolve it in 36mL of 5% NaClO to form B solution, the concentration of NaOH is 3.5mol / L;

[0056] 3) Slowly add solution B to solution A, stir at a constant speed for 90 minutes; centrifuge and wash with deionized water for several times until the pH of the supernatant is neutral, dry at 50°C, and put it in a muffle furnace Heat treatment at 300°C for 2 hours to obtain NiO nanoparticles.

[0057] A sample of the final product was characterized by X-ray powder diffraction XRD, as figure 1 As shown, the main component of the product is NiO whose PDF card number is 75-0197.

[0058] The morphology and size of the product were characterized by transmission electron microscopy (TEM), from figure 2 a...

Embodiment 2

[0067] This example observes the influence of different heat treatment temperatures on the particle size of NiO nanoparticles. The specific preparation steps adopt the technical solution in Example 1, the difference is that the heating temperature in the muffle furnace in step 3) is 400°C.

[0068] The morphology and size of the product were characterized by transmission electron microscopy (TEM), from Figure 6 It can be seen that the obtained ultrafine NiO particles are uniform in size, and the average size of the particle diameter is 10 nm.

Embodiment 3

[0070] A kind of Co 3 o 4 A rapid preparation method for ultrafine nanoparticles, comprising the following steps:

[0071] 1) Weigh 18.5g of cobalt sulfate hexahydrate and dissolve it in 35mL of deionized water to form a 2.00mol / L A solution;

[0072] 2) Weigh 7.5g of KOH and dissolve it in 35mL of 8% NaClO to form B solution, the concentration of KOH is 3.8mol / L;

[0073] 3) Slowly add solution B to solution A, stir at a constant speed for 120 minutes, centrifuge, and wash with deionized water for several times until the pH of the supernatant is neutral, dry at 50°C, and put it in a muffle furnace Heat treatment at 300°C for 2 hours to obtain black Co 3 o 4 nanoparticles.

[0074] A sample of the final product was characterized by X-ray powder diffraction XRD, as Figure 7 As shown, the product composition is Co with PDF card number 42-1467 3 o 4 Material.

[0075] The morphology and size of the product were characterized by transmission electron microscopy (TEM), fr...

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 diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a size-controllable transition metal oxide ultrafine nano-particles and a rapid preparation method and electrochemical application thereof, a water system rapid nucleation-precipitation method of a high-concentration metal salt is utilized, soluble transition metal sulfate is used as a raw material, alkaline metal hydroxide and NaClO or KClO are used as precipitants, and the size-controllable transition metal oxide ultrafine nanoparticles are simply and quickly prepared. The ultrafine nanoparticles play an important role in the fields of super capacitors, secondary ion battery electrode materials, efficient electrochemical catalysis and the like. According to the method, the nanoparticles with different particle sizes can be obtained through temperature control, the particle sizes are 3-15 nm, the particle sizes are small, and particle distribution is uniform. The preparation method is simple to operate, short in period, high in synthesis efficiency, good in repeatability, green and pollution-free to the environment and easy to popularize.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a size-controllable transition metal oxide ultrafine nanoparticle and a rapid preparation method and application thereof. Background technique [0002] As one of the emerging materials with the most market application potential, metal oxide nanomaterials have no doubts about their potential importance. Among them, transition metal oxide nanomaterials have attracted extensive attention of researchers due to their unique properties such as small size and high specific surface area. For example, Ni-based and Co-based oxide nanomaterials have been widely used in electrochemical energy storage fields such as supercapacitors, electrochemical catalysts, and secondary rechargeable ion batteries; metal nanomaterials such as Fe have excellent local surface Plasmon resonance properties are widely used in electrochemistry, biology, medicine, electronics and othe...

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 Applications(China)
IPC IPC(8): C01G53/04C01G51/04C01G45/02C01G49/06B82Y30/00B82Y40/00
CPCC01G53/04C01G51/04C01G45/02C01G49/06B82Y30/00B82Y40/00C01P2002/72C01P2004/03C01P2004/04C01P2006/40C01P2004/64
Inventor 濮军郑奥陈家旭
Owner ANHUI NORMAL 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