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چکیده
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In this work, we synthesized highly porous reduced graphene oxide foams, presenting augmented antibacterial activity in presence/absence of peroxymonosulfate (PMS). To date, this is the first investigation of photocatalytic PMS disinfection by 3D-rGO materials. The foams were prepared through hydrothermal (3DG-W) and solvothermal method (3DG-EG), and analyzed by SEM, PXRD, FTIR, Raman spectroscopy and BET. Hydrothermally synthesized aerogels (3DG-W) were better organized and had higher specific surface area. The higher ratio of ID/ IG in 3DG-W showed the greater removal of oxygen functional groups, larger density of structural defects and a smaller average size of the sp2 domains. Although in the dark PMS activation by 3DG and the subsequent bacterial inactivation likely proceeds via a non-radical pathway, under visible light, the bacterial inactivation rate for 3DG-W was ~3 times higher than that of 3DG-EG and radical pathways are dominant. The generated germicidal reactive species were identified using appropriate scavengers and accordingly, an overview of the occurring photocatalytic and PMS ac
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