Zinc-aluminum hydrotalcite with book-page morphology, and preparation method and application thereof

A zinc-aluminum hydrotalcite, zinc-aluminum hydrotalcite technology, applied in chemical instruments and methods, water pollutants, zinc compounds, etc., can solve the problems of unreported and few zinc-aluminum hydrotalcite preparation, and achieve low cost , the effect of short time-consuming, cheap and easy-to-obtain raw materials

Active Publication Date: 2019-03-29
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, according to a large number of literature reports, the vast majority of LDHs synthesis products are irregular flaky or hexagonal flaky microcrystalline powders, and there

Method used

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  • Zinc-aluminum hydrotalcite with book-page morphology, and preparation method and application thereof
  • Zinc-aluminum hydrotalcite with book-page morphology, and preparation method and application thereof
  • Zinc-aluminum hydrotalcite with book-page morphology, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 4.0161g Zn(NO 3 ) 2 ·6H 2 O and 1.6883g Al(NO 3 ) 3 9H 2 Add O into a beaker containing 30mL of deionized water, stir evenly at room temperature to form solution A; prepare a sodium hydroxide solution with a concentration of 1mol / L, and record it as solution B; slowly drop solution B into solution A and continue stirring , the pH is between 6 and 7 to obtain a suspension C; pour the suspension C into a reaction kettle and then put it into an oven at 100°C, the reaction time is 3 hours, the product is alternately washed with deionized water and ethanol and dried at room temperature to obtain the product Zn -Al LDHs, denoted as 3-Zn-Al LDHs.

Embodiment 2

[0029] Weigh 4.0161g Zn(NO 3 ) 2 ·6H 2 O and 1.6883g Al(NO 3 ) 3 9H 2 Add O into a beaker containing 30mL of deionized water, stir evenly at room temperature to form solution A; prepare a sodium hydroxide solution with a concentration of 1mol / L, and record it as solution B; slowly drop solution B into solution A and continue stirring , the pH is 6-7, and the suspension C is obtained; the suspension C is poured into the reaction kettle and then placed in a 100°C oven, the reaction time is 6 hours, the product is alternately washed with deionized water and ethanol and dried at room temperature to obtain the product Zn -Al LDHs, denoted as 6-Zn-Al LDHs.

Embodiment 3

[0031] Weigh 4.0161g Zn(NO 3 ) 2 ·6H 2 O and 1.6883g Al(NO 3 ) 3 9H 2 Add O into a beaker containing 30mL of deionized water, stir evenly at room temperature to form solution A; prepare a sodium hydroxide solution with a concentration of 1mol / L, and record it as solution B; slowly drop solution B into solution A and continue stirring , the pH is 6-7, and the suspension C is obtained; the suspension C is poured into the reaction kettle and then placed in a 100°C oven, the reaction time is 9 hours, the product is alternately washed with deionized water and ethanol and dried at room temperature to obtain the product Zn -Al LDHs, denoted as 9-Zn-Al LDHs.

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Abstract

The invention discloses zinc-aluminum hydrotalcite with book-page morphology, and a preparation method and application thereof, and belongs to the technical field of functional materials. Hydrotalciteprepared by the existing preparation method of zinc-aluminum hydrotalcite is in a shape of irregular flakes or hexagonal flaky microcrystal powder, special morphology cannot be obtained, and morphology cannot be synthesized controlled controllably. In order to solve the problem, the invention provides the hydrothermal synthesis method, and the growth size and the layer spacing of the material canbe controlled through regulating and controlling the reaction time, the reaction temperature and the concentration of reactants, so that preparation is controllable. The zinc-aluminum hydrotalcite with book-page morphology prepared by the method has a layered structure, is high in crystallinity and high in catalytic efficiency and can be used in a catalytic reaction of malachite green, and the degradation rate of the dye malachite green can reach 91% in 20 minutes.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a layered double metal hydroxide with a book-like microstructure and a preparation method thereof, which is used as an efficient catalyst to catalyze the degradation of dyes. Background technique [0002] Layered double hydroxides (Layered Double Hydroxides, LDHs) are compounds assembled by positively charged metal ion layers and negatively charged interlayer anions through non-covalent interactions, also known as water-like compounds. talc. Its general chemical formula is [M 2+ 1-x m 3+ x (OH) 2 ][A n- ] x / n ·zH 2 O, where M 2+ and M 3+ are divalent and trivalent metal ions (M 2+ Can be Mg 2+ , Zn 2+ 、Ni 2+ Wait, M 3+ can be Fe 3+ , Mn 3+ 、Co 3+ 、Al 3+ etc.), A n- It is the hydrated anion of the interlayer guest, and X represents the molar ratio of trivalent metal ions in the laminate, generally 0.2 to 0.4, usually abbreviated as M 2...

Claims

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Application Information

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IPC IPC(8): C01G9/00B82Y40/00C02F1/32B01J23/06
CPCB01J23/007B01J23/06B82Y40/00C01G9/006C01P2002/22C01P2002/78C01P2004/62C01P2004/64C02F1/32C02F2101/308
Inventor 郎集会张哲华中张旗于万秋
Owner JILIN NORMAL UNIV
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