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

Preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite

A zinc-aluminum hydrotalcite, nano-sheet technology, applied in nanotechnology, chemical instruments and methods, zinc compounds, etc., can solve problems such as high cost and complex film preparation conditions, achieve high repeatability, and be suitable for mass production. , the preparation process is simple and efficient

Inactive Publication Date: 2016-04-20
NORTHWEST UNIV
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the problems existing in the prior art, the present invention proposes a very simple method to prepare zinc-aluminum hydrotalcite, so that the Zn-Al-HTlc nanostructure can be prepared in a large area, and the shape is controllable and can exist stably. It solves the problem of complex preparation conditions and high cost of the thin film in the prior art

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 morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite
  • Preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite
  • Preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This example provides a method for preparing zinc-aluminum hydrotalcites with controllable large-area morphology, which includes the following steps:

[0049] Step 1: Using the secondary anodic oxidation method, using a high-purity aluminum sheet (99.99%) as the substrate, using an oxalic acid solution with a concentration of 0.3M, at a temperature of 5°C, at a voltage of 40V, and oxidized for 2 hours to prepare an anodized aluminum substrate with regular pores .

[0050] Step 2: Dissolve a certain amount of zinc acetate and hexamethylenetetramine in 50ml of ultrapure water, and stir thoroughly. The well-stirred hexamethylenetetramine solution was added dropwise to the zinc acetate solution, and the mixed solution was continuously stirred by a magnetic stirrer for 15 minutes until a transparent and uniform solution was formed to obtain a precursor solution. Wherein, the concentration of zinc acetate is 5 mM, the concentration of hexamethylenetetramine is 12.5 mM, and t...

Embodiment 2 to 4

[0058] This example provides a method for preparing zinc-aluminum hydrotalcites with controllable large-area morphology, which includes the following steps:

[0059] Step 1: Using the secondary anodic oxidation method, using a high-purity aluminum sheet (99.99%) as the substrate, using an oxalic acid solution with a concentration of 0.3M, at a temperature of 5°C, at a voltage of 40V, and oxidized for 2 hours to prepare an anodized aluminum substrate with regular pores .

[0060] Step 2: Dissolve a certain amount of zinc acetate and hexamethylenetetramine in 50ml of ultrapure water, and stir thoroughly. The well-stirred hexamethylenetetramine solution was added dropwise to the zinc acetate solution, and the mixed solution was continuously stirred by a magnetic stirrer for 15 minutes until a transparent and uniform solution was formed to obtain a precursor solution. Wherein, the concentration ratio of zinc acetate and hexamethylenetetramine is 1:1, and the total concentrations ...

Embodiment 5 to 8

[0065] This example provides a method for preparing zinc-aluminum hydrotalcites with controllable large-area morphology, which includes the following steps:

[0066] Step 1: Using the secondary anodic oxidation method, using a high-purity aluminum sheet (99.99%) as the substrate, using an oxalic acid solution with a concentration of 0.3M, at a temperature of 5°C, at a voltage of 40V, and oxidized for 2 hours to prepare an anodized aluminum substrate with regular pores .

[0067] Step 2: Dissolve a certain amount of zinc acetate and hexamethylenetetramine in 50ml of ultrapure water, and stir thoroughly. The well-stirred hexamethylenetetramine solution was added dropwise to the zinc acetate solution, and the mixed solution was continuously stirred by a magnetic stirrer for 15 minutes until a transparent and uniform solution was formed to obtain a precursor solution. Wherein, the concentration of zinc acetate is 0.5 mM, and the concentration ratios of zinc acetate and hexamethyl...

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 provides a preparation method of morphology-controllable large-area nanometer platy zinc-aluminum type hydrotalcite. The method is characterized in that the large-area nanometer platy zinc-aluminum type hydrotalcite is prepared on a porous anodized aluminum substrate through a water bath method with porous anodized aluminum as the substrate. Solvent of the water bath method is ultrapure water, and reactant is zinc acetate and hexamethylenetetramine. The concentration of a reactant aqueous solution of the water bath method ranges from 0.5 mM to 50 mM. The ratio of the concentration of zinc acetate to hexamethylenetetramine is 1:(1-10). The temperature of the water bath method is 45-90 DEG C. The water bath time of the water bath method is 1-7 h. The zinc-aluminum type hydrotalcite nanometer structure which is large in area, controllable in morphology, high in repeatability, good in uniformity and stable in property can be obtained through the simple water bath method on the AAO substrate. The preparation process is simple, efficient, low in cost, high in repeatability and suitable for large-batch production.

Description

technical field [0001] The invention belongs to the technical field of surface nanometer materials, and in particular relates to a method for preparing a large-area nano-flaky zinc-aluminum hydrotalcite with controllable morphology. Background technique [0002] Hydrotalcite-like compounds (HTlc for short) are mixed metal hydroxides with a layered crystal structure composed of divalent and trivalent metal cations, with a general formula: [M(II) 1- x M(III) x (OH) 2 ] x+ A n- x / n mH 2 O, in the formula, M(II) and M(III) are divalent and trivalent metal cations respectively, A is an interlayer anion whose valence is -n, and x is the number of moles of M(III) in the HTlc of the molar mass , m is the number of hydration water between the sheets. Zinc-aluminum hydrotalcite (Zn-Al-HTlc) is a kind of hydrotalcite, and its divalent metal cation M(II) is Zn 2+ , the trivalent metal cation M(III) is A1 3+ , interlayer anion A n- for C0 3 2- . Due to the special chemical ...

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): C01G9/00B82Y40/00
CPCC01G9/006C01P2002/22C01P2002/72C01P2002/85C01P2004/03C01P2004/20
Inventor 王凯歌李晓庆王雪文孙聃王爽张琛白晋涛
Owner NORTHWEST 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