Transition metal oxide modified bismuth vanadate photocatalyst for efficiently degrading antibiotics in water

Abstract

The invention discloses a method for loading oxides of transition metals such as Co, Fe, Cu and Mn on the surface of bismuth vanadate as a co-catalyst by adopting a molten salt method. The degradation performance of norfloxacin before and after loading is compared, and an excellent photocatalyst is selected. Compared with traditional TiO2, BiVO4 has a narrower forbidden bandwidth, is free of secondary pollution and can be widely used. By adjusting experimental parameters, transition metal oxide is loaded on the surface of bismuth vanadate to serve as a co-catalyst for activating peroxymonosulfate. The research thought of the project is formed on the basis of earlier-stage research and literature research, and the core of the project is to overcome the defects that the photo-generated charge separation capacity of a photocatalytic material is poor, peroxymonosulfate is difficult to activate and the like. The degradation performance of the photocatalyst / peroxymonosulfate activation coupling system is improved by strengthening directional separation and transmission of photo-generated charges and adsorption and activation of persulfate. Therefore, the results show that the project research scheme is feasible, and expected research results can be obtained.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a method for efficiently degrading norfloxacin, an antibiotic in water, with bismuth vanadate, a semiconducting material with high photocatalytic performance, and a co-catalyst loaded with it, which belongs to the field of water treatment. Background technique [0002] China's social economy is developing rapidly, people's living standards are constantly improving, and people have higher requirements for health. Accompanied by this demand, the pharmaceutical industry has quietly emerged, and there are many pharmaceutical factories. Although the pharmaceutical industry is booming, it has a serious negative impact on the environment. At present, there are a large number of antibiotic production enterprises in my country, and the wastewater discharged by them pollutes many water bodies, leading to the deterioration of the ecological environment. The treatment of antibioti...

AI Technical Summary

Problems solved by technology

[0003] Antibiotic wastewater has complex components, many impurities, large pH fluctuations, and has certain biological toxicity, which has certain toxic effects on microorganisms in the treatment process

The characteristics of antibiotic wastewater make the treatment process more difficult, and also increase the cost of treatment, but people seem to have not fully realized the importance of antibiotic treatment, and the abuse of antibiotics is still common.

Images