Photocatalytic and oxidation mechanisms of Fe–Ag@AgCl: Effect on co-existing arsenic (III) and Escherichia coli

Autor: Yanping Cui, Qian Ye, Haili Wang, Xuewen Duo, Liang Peng, Wei Dong, Xiaoxiao Cui, Yue Lu, Yajie Li
Rok vydání: 2023
Předmět:
Zdroj: Environmental Research. 217:114913
ISSN: 0013-9351
DOI: 10.1016/j.envres.2022.114913
Popis: To address the drinking safety problems associated with high arsenic(III) (As(III)) and bacteria in underground water, core-shell Fe-Ag@AgCl nanowires were synthesized and exhibited excellent photocatalytic oxidation effects on co-existing As(III) and Escherichia coli (E. coli). With the introduction of Fe, the nanowires that were used 5 times could be easily magnetically collected, and the As(III) oxidation effect of these re-chlorinated nanowires increased from 39% to 60%. E. coli was completely inactivated within 60 min without photoreactivation after 20 min. Extracellular polymeric substances have play a protective role in the disinfection process. Quenching testing results confirmed that, except for the superoxide radical (•O
Databáze: OpenAIRE