Preparation of magnetic nano copper-iron oxyhydroxide and application thereof to pollution removal by catalytic ozonation

Abstract

The invention provides a preparation method for a catalyst which is used for purifying a water body containing pharmaceutical and personal care products (PPCPs) including phenacetin and the like, aiming at the disadvantages and the defects of an existing water treatment technology for removing trace phenacetin in water. A magnetic nano copper-iron oxyhydroxide catalyst takes an iron salt and cuprate as key active components to integrate the surface characteristics of binary metal oxyhydroxides including Fex(OH)y and Cux(OH)y; the catalyst has a large specific surface area; meanwhile, the high surface hydroxyl density is the other important factor for providing the catalytic activity. More importantly, the magnetic nano copper-iron oxyhydroxide has the magnetism and the powdery catalyst is separated from a water phase by adopting a magnetic field. The catalyst can be applied to a catalytic ozonation technology so as to effectively improve the removing effects of the PPCPs including the phenacetin and the like in the water body; the phenacetin pollution removing effect is realized so as to obtain high-quality and stable output water; the catalyst has a wide application prospect.

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 reaction...

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 flow operation; most heterogeneous catalysts are oxides made by high temperature or hydrothermal sintering, which only Can use some catalytic active sites on the surface, the catalytic activity is relatively poor and the catalytic performance is unstable

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