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

Preparation method of nuclear-shell double-layer zinc oxide/cobalt tetroxide nanometer material

A technology of cobalt tetroxide and nanomaterials, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as poor material degradation effect, achieve low synthesis temperature, Simple synthesis method and low cost effect

Inactive Publication Date: 2019-09-10
HARBIN INST OF TECH
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the ZnO / Co prepared by existing methods 3 o 4 The problem of poor material degradation effect provides a core-shell bilayer ZnO / Co 3 o 4 Preparation methods of nanomaterials

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 nuclear-shell double-layer zinc oxide/cobalt tetroxide nanometer material
  • Preparation method of nuclear-shell double-layer zinc oxide/cobalt tetroxide nanometer material
  • Preparation method of nuclear-shell double-layer zinc oxide/cobalt tetroxide nanometer material

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0031] Specific embodiment 1: The preparation method of the core-shell double-layer zinc oxide / cobalt tetroxide nanomaterial in this embodiment includes the following steps:

[0032] 1. Synthesis of ZIF8 materials:

[0033] Zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) be dissolved in methanol to form solution A, 2-methylimidazole is dissolved in methanol to form solution B, while magnetic stirrer stirs solution A, slowly add solution B and continue to stir for 5-10min, the mixed solution that forms is transferred to Place in a reaction kettle in an oven, age at 100-120°C for 12-14h to obtain a solid-liquid mixture, centrifuge and wash the solid precipitate with methanol three times, and dry at 70-80°C for 8-12h to obtain a rhomboid ten Dihedral ZIF8 nanomaterials;

[0034] 2. Synthesis of ZIF8@ZIF67 materials:

[0035] ZIF8 nanometer material is ultrasonically dispersed in methanol for 30-60min to form solution C (it is a more uniform suspension, and ZIF8 nanometer mate...

specific Embodiment approach 2

[0040] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the mass concentration of zinc nitrate hexahydrate in solution A in step 1 is 29-30 g / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0041] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass concentration of 2-methylimidazole in solution B in step 1 is 49-50 g / L. Others are the same as in the first or second embodiment.

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
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a nuclear-shell double-layer zinc oxide / cobalt tetroxide nanometer material and relates to a preparation method of the nanometer material and solves the problem of poor degradation of ZnO / Co3O4 prepared by the existing methods. The preparation method comprises the following steps: 1, dissolving zinc nitrate hexahydrate in methanol to form solution A, dissolving 2-methylimidazole in methanol to form solution B, mixing solution A and solution B, aging in an oven, washing and precipitating, and drying to obtain ZIF8 nanometer material; 2, dispersing that ZIF8 nanometer material in methanol to form solution C, dissolving cobalt chloride in methanol to form solution D, dissolving 2-methylimidazole in methanol to form solution E, and mixing the solutions C, D and E, aging in an oven to obtain a solid-liquid mixture, washing and precipitating and drying to obtain ZIF8@67 nanomaterial; 3, calcining ZIF8@67 nanometer material to obtain ZnO / Co3O4nanometer material. The invention is used in the field of nanometer materials.

Description

technical field [0001] The invention relates to a preparation method of nanometer material. Background technique [0002] In the field of environmental chemistry, photocatalytic degradation of pollutants has always been a hot spot of concern, and the catalysts generally recognized and studied mainly include ZnO, TiO 2 , CdS, ZnS, MoS 2 Wait. The preparation method mainly includes sol-gel method, ion exchange method, microwave-assisted precipitation method, electrochemical deposition method, hydrothermal method, solvothermal method and heat treatment method. There are common defects in the structure of materials currently used for pollutant degradation, such as the ZnO / Co with inhomogeneous morphology that has been reported. 3 o 4 The specific surface area of ​​the material is too small, and the electron-hole recombination is too fast. On the other hand, there is no uniform and regular channel for the electron-hole directional migration, which greatly reduces the photocat...

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): B01J23/80B01J35/10C02F1/30C02F101/38
CPCB01J23/002B01J23/80C02F1/30C02F2101/40C02F2305/10B01J35/396B01J35/39B01J35/61
Inventor 杨敏张春艳
Owner HARBIN INST OF TECH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com