LBJG-017 Synthesis of novel Ag3PO4/Bi2WO6/MWCNTs nanocomposites under visible-light irradiation Photocatalytic degradation of norfloxacin antibiotics
作者：zhijia zhu；Chunmeng Wang；Lijuan Liang；Dan Yu；Jie Sun； Baojiang Liu*
關(guān)鍵字：Nanocomposites; Ag3PO4/Bi2WO6/MWCNTs; Norfloxacin; Degradation mechanism; LC-MS/MS
論文來(lái)源：期刊
具體來(lái)源：Journal of Nanoscience and Nanotechnology
發(fā)表時(shí)間：2020年
Novel Ag3PO4/Bi2WO6/MWCNTs nanocomposites were prepared via a facile
hydrothermal method and an in-situ precipitation without the addition of any spherical
template. It exhibited excellent catalytic activity under visible light irradiation.
Compared to pure Ag3PO4, Bi2WO6, Bi2WO6/MWCNTs and Ag3PO4/Bi2WO6, the
ternary Ag3PO4/Bi2WO6/MWCNTs nanocomposites showed the best photocatalytic
performance due to the narrow band gap level, strong light absorbance in visible
region, large specific surface area and high charge separation efficiency. Being used to
degrade norfloxacin antibiotics (NOR) under visible light irradiation, it also showed
perfect photocatalytic activity. The degradation products of NOR were identified by
LC-MS/MS analysis, and a possible photodegradation mechanism of NOR was
discussed. The results indicated that NOR can be degraded via three pathways, the
piperazinyl ring was the most reactive site for hydroxyl radical attack, followed by
2
stepwise oxidation and further ring-opening. Overall, the composites would be
promising material for the removal of contaminants in water.