Hefei Research Institute made progress in the rapid degradation of antibiotics in water

2024-01-16 10:07:12

December 26, 2018 Source: Chinese Academy of Sciences

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Recently, the research team of Liu Jinhuai, research group of the Institute of Intelligent Machinery of Hefei Institute of Material Science, Chinese Academy of Sciences, designed a novel morphologically controllable WMoO-1 UTNWs catalyst for heterogeneous Fenton oxidation system, achieving a wide pH range. Internal antibiotics - efficient degradation of tetracycline. The results were published in the Journal of the Royal Society of Chemistry, Nanoscale (DOI: 10.1039/C8NR08162J).

Since humans or animals are often unable to completely absorb the antibiotics taken, a large amount of antibiotics are discharged into the environment as metabolites or even in the original state, resulting in the resistance of the pathogenic microorganisms, resulting in enhanced resistance of the susceptible bacteria. As a typical antibiotic, tetracycline is difficult to be completely absorbed by the stomach after being ingested by the human body. About 75% of the dose is discharged by the human body in the form of a parent compound, posing a great potential threat to the ecological environment and biosafety. Fenton technology is an advanced oxidation water treatment technology, which produces strong oxidizing hydroxyl radicals to achieve efficient degradation of organic matter. However, since the conventional Fenton reaction needs to work under strong acid conditions, it has been used in practical applications. limit.

In previous studies, the researchers found that defects and doping can significantly improve the electron transfer efficiency in higher-order oxidation systems due to their special coordination chemical structure and electronic structure. In addition, redox between the cations in the multi-metal oxide is also advantageous for achieving efficient catalysis of H2O2. Based on the above theory, the researchers successfully prepared a WMoO-1 UTNWs catalyst with controlled morphology to the heterogeneous Fenton system, broadened the optimal pH range of the reaction to neutral, and improved Fenton. The efficiency of technical degradation of tetracycline. This study discussed in detail the catalytic degradation mechanism, speculated the possible tetracycline degradation route, solved the refractory problem of tetracycline, broadened the pH application range of Fenton-like reaction, and has broad application prospects.

The research work was funded by the key deployment projects of the Chinese Academy of Sciences, major projects in Anhui Province, key research and development in Anhui Province, and the Dean of Hefei Research Institute.

Hefei Research Institute made progress in the rapid degradation of antibiotics in water

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