Preparation of magnetic nano-copper-iron oxyhydroxides and its application in catalytic ozone oxidation for pollution removal

Abstract

The invention aims at the deficiencies and defects of existing water treatment technologies for removing trace amounts of phenacetin in water, and proposes a preparation method of a catalyst for water purification containing phenacetin and other medicines and personal care products (PPCPs). . The magnetic nano-copper iron oxyhydroxide catalyst is based on iron salts and cuprates as the key active components, and integrates Fe x (OH) y , Cu x (OH) y The surface characteristics of binary metal oxyhydroxides not only have large specific surface area, but also high surface hydroxyl density is another important factor to provide their catalytic activity. More importantly, the magnetic nano-copper iron oxyhydroxide is magnetic, and a magnetic field can be used to separate the catalyst in powder state from the aqueous phase. The catalyst can be applied to ozone catalytic oxidation technology to effectively improve the removal effect of PPCPs such as phenacetin in water, and play a role in decontamination of phenacetin to obtain better and stable effluent. A catalyst with broad application prospects.

Description

technical field [0001] The invention relates to the preparation of a magnetic nanometer copper-iron oxyhydroxide catalyst and its catalytic ozone oxidation decontamination technology. Background technique [0002] In recent years, pharmaceuticals and personal care products (PPCPs) have received increasing attention as an emerging pollutant. Many PPCPs components have strong biological activity, optical activity and polarity, and most of them exist in the water environment in trace concentrations. The use of veterinary medicine, agricultural medicine, human medicine and cosmetics is the main way it is introduced into the environment. Because such substances are continuously introduced into the environment while being removed, they are also called "pseudo-persistent" pollutants. When water polluted by PPCPs enters the human body, it is equivalent to swallowing drugs with unknown side effects. Various chemical substances interact in the human body to produce chemical effects....

AI Technical Summary

Problems solved by technology

Although heterogeneous catalysts have the advantages of simple separation conditions or no need for separation (such as gas-solid two-phase catalysis), and the advantages of uninterrupted and streamlined operation; but most of the heterogeneous catalysts are oxides made by high temperature or hydrothermal sintering. Only some catalytic active sites on the surface can be used, the catalytic activity is relatively poor and the catalytic performance is unstable

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