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Copper-iron layered double metal hydroxide, copper-iron layered double metal hydroxide/carbon matrix composite material and preparation method and application thereof

A carbon-based composite material, layered bimetal technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, oxidized water/sewage treatment, etc. Monotonicity, low ammonia nitrogen removal efficiency, etc., to achieve the effect of low cost, significant ammonia nitrogen removal, and abundant active sites

Active Publication Date: 2022-07-19
ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, hypochlorite is usually used to remove ammonia nitrogen pollutants in water, but the active free radicals produced by a single chemical method are monotonous and limited in number, and the removal efficiency of ammonia nitrogen is low

Method used

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  • Copper-iron layered double metal hydroxide, copper-iron layered double metal hydroxide/carbon matrix composite material and preparation method and application thereof
  • Copper-iron layered double metal hydroxide, copper-iron layered double metal hydroxide/carbon matrix composite material and preparation method and application thereof
  • Copper-iron layered double metal hydroxide, copper-iron layered double metal hydroxide/carbon matrix composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 Preparation of copper-iron layered double metal hydroxide (Cu-Fe(2:1)LDH) 0.02mol Cu(NO 3 ) 2 ·3H 2 O and 0.01mol Fe(NO 3 ) 3 ·9H 2 O was dissolved in 300ml of deionized water, then sonicated at room temperature until the metal salt was completely dissolved, and an alkaline reagent prepared with sodium hydroxide and sodium carbonate was added dropwise, wherein the concentration of sodium hydroxide was 0.5M, and the concentration of sodium carbonate was 0.02 M; slowly add an alkaline reagent to the mixed solution, keep stirring, adjust the pH to 6.7, and continue stirring for one hour; stop stirring, put the mixed solution in a 110°C oven, let it stand, and age for 5 hours; discard the aged sample The supernatant and the remaining mixture were washed with deionized water by centrifugation at least three times, and the obtained samples were placed in a 60 °C oven for 10 h, and then ground to obtain Cu-Fe (2:1) LDH samples. The XRD pattern of the obtained pr...

Embodiment 2

[0051] Example 2 Preparation of copper-iron layered double metal hydroxide (Cu-Fe(3:1)LDH) 0.0225mol Cu(NO 3 ) 2 ·3H 2 O and 0.0075mol Fe(NO 3 ) 3 9H2O was dissolved in 300ml of deionized water, then sonicated at room temperature until the metal salt was completely dissolved, and an alkaline reagent prepared with sodium hydroxide and sodium carbonate was added dropwise, wherein the sodium hydroxide concentration was 0.5M, and the sodium carbonate concentration was 0.015M; slowly add alkaline reagent to the mixed solution, keep stirring, adjust the pH to 6.7, and continue stirring for one hour; stop stirring, put the mixed solution in a 110°C oven, let it stand, and age for 5 hours; discard the aged sample The supernatant was washed with deionized water at least three times by centrifugation, and the obtained sample was dried in an oven at 60 °C for 10 h, and then ground to obtain a Cu-Fe (3:1) LDH sample. The XRD pattern of the obtained product is as follows figure 1 As s...

Embodiment 3

[0053] Example 3 Preparation of copper-iron layered double metal hydroxide (Cu-Fe(4:1)LDH).

[0054] 0.024mol Cu(NO 3 ) 2 ·3H 2 O and 0.006mol Fe(NO 3 ) 3 ·9H 2 O was dissolved in 300ml of deionized water, then sonicated at room temperature until the metal salt was completely dissolved, and an alkaline reagent prepared with sodium hydroxide and sodium carbonate was added dropwise, wherein the concentration of sodium hydroxide was 0.5M, and the concentration of sodium carbonate was 0.012 M; slowly add an alkaline reagent to the mixed solution, keep stirring, adjust the pH to 6.7, and continue stirring for one hour; stop stirring, put the mixed solution in a 110°C oven, let it stand, and age for 5 hours; discard the aged sample The supernatant and the remaining mixture were centrifuged and washed with deionized water for at least three times, and the obtained samples were placed in an oven at 60 °C for 10 h, and then ground to obtain Cu-Fe (4:1) LDH samples. The scanning e...

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Abstract

The invention relates to a copper-iron layered double metal hydroxide, a copper-iron layered double-metal hydroxide / carbon-based composite material and a preparation method and application thereof. The preparation method of the copper-iron layered double-metal hydroxide comprises: (1) Dissolve metal copper salt and metal iron salt in deionized water to obtain a mixed solution; (2) Add an alkaline reagent to the mixed solution, adjust pH=5~7, and age at 60~130℃ for 20 ~80 hours to obtain the copper-iron layered double metal hydroxide.

Description

technical field [0001] The invention relates to a copper-iron layered double metal hydroxide, a copper-iron layered double metal hydroxide / carbon-based composite material and a preparation method and application thereof, in particular to a copper-iron layered double metal hydroxide and a carbon-based composite material thereof. A matrix composite material, a preparation method thereof and an application of photochemical catalysis to remove ammonia nitrogen in water belong to the technical field of water treatment. Background technique [0002] Ammonia nitrogen is a common pollutant in water, mainly from wastewater and landfill leachate discharge from chemical fertilizer, tanning, aquaculture, petrochemical, meat processing and other industries, as well as urban sewage and agricultural irrigation drainage. The discharge of a large amount of ammonia nitrogen wastewater will cause eutrophication of water bodies, odor and difficulties in water supply. At present, the treatment ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J35/10B01J35/02C02F1/32C02F1/76C02F101/16B01J35/00
CPCB01J23/745C02F1/32C02F1/76C02F2101/16C02F2305/10C02F2305/02B01J35/394B01J35/00B01J35/30B01J35/61B01J35/39
Inventor 赵国萍刘阳桥孙盛睿王杨杨李娜
Owner ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD
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