Preparation and application of a kind of t-se rod-supported biocl ultrathin sheet composite photocatalyst

Abstract

The invention discloses a preparation method for a t-Se rod-loaded BiOCl ultra-thin nanosheet composite photocatalyst, which belongs to the technical field of environmental material preparation. The specific steps are to use deionized water as the solvent, add cadmium chloride and methacrylic acid, stir and adjust the pH value of the solution, then inject the supernatant solution of selenium powder and sodium borohydride dissolved in deionized water, vent nitrogen, and then The solution was poured into a three-necked flask, heated, naturally cooled, centrifuged, washed and dried to obtain CdSe quantum dots. Then, mix and stir the BiOCl precursor solution and CdSe quantum dots in the mannitol solution, then pour them into the reaction kettle. After a hydrothermal reaction for a certain period of time, they are naturally cooled to room temperature. The kettle is opened, centrifuged, washed and dried, and dried to obtain a composite photocatalyst. The composite photocatalyst of the present invention can effectively utilize visible light to degrade tetracycline hydrochloride in antibiotic wastewater, is easy to operate, and is a green, environmentally friendly and efficient treatment technology.

Description

technical field The invention belongs to the technical field of environmental material preparation, and in particular relates to the preparation and application of t-Se rod-loaded BiOCl ultrathin sheet composite photocatalysts. Background technique Tetracycline antibiotics, as a class of broad-spectrum antibiotics named for having the same chemical structure, have a good effect on the treatment of livestock bacterial diarrhea and respiratory diseases of livestock and poultry, and can promote growth, increase Egg production and promote milk secretion. However, as people's understanding of antibiotics has deepened, their use in animal and food production has been widely questioned. It is found that the resistance of bacteria in this application is also significantly improved, and it is easy to cause double infection, allergic reaction, affect the growth of teeth and bones, and damage the liver and other adverse reactions, which have directly affected the ecology and human hea...

AI Technical Summary

Problems solved by technology

Although these two heterojunctions have shown good photodegradation ability, BiOCl itself is not excited by visible light, which limits the effective development of its photocatalytic performance.

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