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Photocatalytic degradation of ciprofloxacin in water at nano-ZnO prepared by pulse alternating current electrochemical synthesisстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Ulyankinaa A., Molodtsova T., Gorshenkov M., Leontyev I., Zhigunov D., Konstantinova E., Lastovina T., Tolasz J., Henych J., Licciardello N., Cuniberti G., Smirnova N.
- Журнал: Journal of Water Process Engineering
- Год издания: 2020
- Издательство: ELSEVIER SCIENCE BV
- Местоположение издательства: PO BOX 211, AMSTERDAM, NETHERLANDS, 1000 AE
- DOI: 10.1016/j.jwpe.2020.101809
- Аннотация: Ciprofloxacin (CIP) is a broad spectrum synthetic antibiotic of the fluoroquinolone group frequently detected inhospital wastewater, sewage treatment plant effluent, and surface water. The current study investigates the CIPphotocatalytic degradation at nano-ZnO synthesized by a novel large-scale and environmentally friendly electrochemicalmethod using pulse alternating current. This method implies the use of LiCl, KCl, NaCl and Na2SO4as the electrolytes without adding any organic additives or post annealing. The effect of electrolytic media on themorphological, structural, optical and electronic properties of the resulting nano-ZnO was evaluated. The highestCIP removal efficiency reached 93.6 % in 30 min and the TOC removal efficiency reached 51.0 % in 60 minunder optimal conditions (5 mg L 1 initial CIP concentration, pH 6.5, catalyst dosage 0.5 g L 1, UV light intensity2.0 mW cm 2) in the presence of ZnO nanoparticles prepared in LiCl. The efficiency values are higher than thoseof commercial ZnO due to the increased surface area and the improved separation of charge carriers. Reactivespecies study confirmed the main role of h+ in the photodegradation process. The photocatalytic performance ofthe synthesized ZnO samples suggests that these materials can be used for water treatment in environmentalapplications.
- Добавил в систему: Константинова Елизавета Александровна