Catalyst for degrading antibiotics in water through photocatalysis as well as preparation method and application of catalyst

Abstract

The invention discloses a catalyst for degrading antibiotics in water through photocatalysis as well as a preparation method and an application of the catalyst. The preparation method comprises steps as follows: 1), preparation of a nano-powder precursor solution : strontium acetate, antimony pentoxide and 65-75 ml of deionized water are stirred and mixed at the room temperature, the mole ratio of strontium acetate to antimony pentoxide is (1.35-2) :1, the PH is adjusted to 1-5 through 2-6 mol / L of nitric acid, and the nano-powder precursor solution is obtained; (2), preparation of nano-powder under the hydrothermal condition: the nano-powder precursor solution is placed in a 100 ml of high-pressure reaction kettle, is heated to the temperature of 100-200 DEG C at the speed of 1-5 DEG C / min, has a hydrothermal reaction for 6-48 h, is naturally cooled to the room temperature after the reaction ends, and then is taken out, a product is cleaned for 3-5 times with deionized water and absolute ethyl alcohol and put in a drying box to be dried at the temperature of 60-80 DEG C, and a photocatalyst is obtained. The photocatalyst prepared with the preparation method and used for degrading antibiotics in water through photocatalysis can be used for photocatalysis treatment on antibiotics in sewage, and the degradation rate is higher than 89%.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a treatment method for antibiotics in the water phase, specifically reduced to a method using strontium antimonate (Sr 1.36 Sb 2 o 6 ) photocatalytic degradation of antibiotics in water. Background technique [0002] Antibiotics are a class of secondary metabolites produced by organisms (including microorganisms and higher animals and plants) in the course of life, which have anti-pathogen or other activities, and organic substances that can interfere with the development and function of other living cells. Since penicillin was used clinically in the early 1840s, antibiotics have been widely studied because of their great functions, such as inhibiting and killing bacteria, molds, mycoplasma, chlamydia and other pathogenic microorganisms. and apply. At present, antibiotics are not only used to treat various human clinical diseases, such as sterilization and anti-inflammation; they...

AI Technical Summary

Problems solved by technology

However, due to the stability and persistence of antibiotics, and their strong inhibitory effect on bacteria, it is difficult to remove them through natural biodegradation, and they are easy to accumulate. flow into soil and sediment

Excessive accumulation of antibiotics will lead to the production of microbial resistance genes, and even long-term exposure to antibiotics at trace levels will cause harm to the ecological environment and human health

A large amount of wastewater containing antibiotics is discharged, causing serious harm to the water environment

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