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Preparation method of ultrathin copper-iron bimetallic oxide and method for catalytically degrading pollutants

A copper-iron bimetallic, catalytic degradation technology, applied in metal/metal oxide/metal hydroxide catalysts, water pollutants, chemical instruments and methods, etc., to achieve excellent degradation effect and improve degradation efficiency.

Pending Publication Date: 2021-12-07
HEBEI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The authorized invention patent "A method for degrading tetracycline by iron / copper double metal oxide" (CN201711207844.3) discloses a preparation method of iron / copper double metal oxide. The product prepared by this method is a granular composite. The problem of catalyst agglomeration cannot be avoided during the process

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  • Preparation method of ultrathin copper-iron bimetallic oxide and method for catalytically degrading pollutants
  • Preparation method of ultrathin copper-iron bimetallic oxide and method for catalytically degrading pollutants
  • Preparation method of ultrathin copper-iron bimetallic oxide and method for catalytically degrading pollutants

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[0026] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0027] The preparation method of the ultra-thin copper-iron bimetallic oxide in the present invention comprises the following steps: firstly, according to the molar ratio of Fe:Cu=1:1 (the total number of moles is 4mM), respectively weigh Fe(NO) 3 ) 3 · 9H 2 O, Cu(NO 3 ) 2 · 3H 2 O was dissolved in 50 ml of deionized water, and stirred magnetically for 30 min at room temperature to make it fully dissolved to obtain solution A; secondly, 0.2 g of NaBH 4 Dissolve in 20 mL of deionized water to obtain solution B; then, add solution B dropwise to solution A at a uniform speed (the titration process is about 6 min), react for 10 min, ultrasonicate for 10 min, centrifuge, wash with ethanol, and magnetically stir for 15 min (repeat this operation for two times); finally, dry in a vacuum drying oven at 60°C for 1 day; grind the dried samples into uniform fine particles...

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Abstract

The invention discloses a preparation method of an ultrathin copper-iron bimetallic oxide and a method for catalytically degrading pollutants. The preparation method of the ultrathin copper-iron bimetallic oxide (CuFe-OS) comprises the steps of firstly, respectively dissolving Fe(NO3)3.9H2O and Cu(NO3)2.3 H2O in 50ml of deionized water according to the molar ratio of Fe to Cu of 1: 1 (the total mole number is 4mM), and magnetically stirring for 30 minutes at room temperature to fully dissolve the Fe(NO3)3.9H2O and the Cu(NO3)2.3H2O to obtain a solution A; secondly, dissolving 0.2 g of NaBH4 in 20 mL of deionized water, and obtaining a solution B; then, dropwise adding the solution B into the solution A at a constant speed (the titration process is about 6 minutes), reacting for 10 minutes, carrying out ultrasonic treatment for 10 minutes, centrifuging, washing with ethanol, and magnetically stirring for 15 minutes (repeating the operation twice); finally, drying for 1 day in a vacuum drying oven at the temperature of 60 DEG C; and grinding the dried sample into uniform fine particles for later use. According to the invention, NaBH4 is used as a strong reducing agent to prepare the ultrathin flaky catalyst, so that the area of active sites is increased, and the activation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of pollutant degradation by advanced persulfate oxidation technology, and in particular relates to a method for preparing an ultra-thin copper-iron bimetallic oxide and a method for catalytic degradation of pollutants. Background technique [0002] In recent years, advanced persulfate oxidation technology has been widely used in the degradation of emerging pollutants. Persulfate has the characteristics of pH universality, strong oxidation, high water solubility and stability, and activates persulfate to produce SO 4 -· , the radical redox potential (2.5~3.1V) is higher than that of HO · (1.8~2.7V), and SO 4 -· Half-life longer than HO · half life. Persulfate is extremely stable, and it is difficult to be activated to generate SO at normal temperature and pressure 4 -· , but SO can be accelerated under activation conditions such as light, electricity, heat, ultrasound, transition metals, etc. 4 -· , which con...

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Application Information

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IPC IPC(8): B01J23/745C02F1/72C02F101/30C02F101/38
CPCB01J23/745C02F1/725C02F2101/30C02F2101/40C02F2101/38
Inventor 王文静李梦新
Owner HEBEI UNIVERSITY