College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China.
College of Resources and Environmental Engineering, Guizhou University, Guiyang, Guizhou, 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou, 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou, 550025, China.
Environ Pollut. 2023 Nov 1;336:122409. doi: 10.1016/j.envpol.2023.122409. Epub 2023 Aug 17.
Quinolone antibiotics are emerging environmental contaminants, which cause serious harm to the ecological environment and human health. How to effectively remove these emerging pollutants from water remains a major challenge worldwide. In this study, a novel Fe/Ti biochar composite (Fe/Ti-MBC) was prepared by facile one-step co-pyrolysis of wood chips with hematite and titanium dioxide (TiO) for adsorption and photocatalytic degradation of ciprofloxacin (CIP) and norfloxacin (NOR) in water. The results showed that the degradation efficiencies of Fe/Ti-MBC to CIP and NOR were 88.4% and 88.0%, respectively. The π-π interactions and polar interactions are the main adsorption mechanisms for CIP and NOR. In the photocatalytic process, h and ·OH are the main active substances for the oxidative degradation of CIP and NOR. This study shows that Fe/Ti-MBC is an effective and recyclable composite, providing a novel alternative way for antibiotics degradation.
喹诺酮类抗生素是新兴的环境污染物，对生态环境和人类健康造成严重危害。如何有效地从水中去除这些新兴污染物仍然是全球面临的重大挑战。在这项研究中，通过简便的一步共热解木屑与赤铁矿和二氧化钛（TiO）制备了一种新型的 Fe/Ti 生物炭复合材料（Fe/Ti-MBC），用于水中环丙沙星（CIP）和诺氟沙星（NOR）的吸附和光催化降解。结果表明，Fe/Ti-MBC 对 CIP 和 NOR 的降解效率分别为 88.4%和 88.0%。π-π 相互作用和极性相互作用是 CIP 和 NOR 的主要吸附机制。在光催化过程中，h 和·OH 是 CIP 和 NOR 氧化降解的主要活性物质。本研究表明，Fe/Ti-MBC 是一种有效且可回收的复合材料，为抗生素降解提供了一种新的替代方法。
