Development of sustainable routes for nanoparticle synthesis is one of the important research issues in waste management. Herein, we synthesized the nano iron oxide-cubic (NIO-C) nanoparticles from iron waste sludge for application as additive in polyethylene glycol (PAG46) lubricant. X-ray diffraction (XRD) evidenced the presence of maghemite as a dominant phase of the NIO-C nanoparticles, having (311) crystallographic plane at the diffraction angle of 35.27°. High-resolution transmission electron microscopy (HR-TEM) confirmed the presence of cubic maghemite of ~ 20 nm in size. The NIO-C nanoparticles served as the additive in the PAG46 lubricant, showing a decrease in the coefficient of friction by 46% at 25 °C and by 36% at 80 °C. Reducing the coefficient of friction was assigned to the cubic NIO-C fractions, enhancing the smoothness of the metal plates. This study describes economic and environmentally sustainable method for producing cubic maghemite nanoparticles. Graphical Abstract: [Figure not available: see fulltext.]
Iron Oxide Nanoparticles Synthesized from Iron Waste as an Additive to Lubricants for Reducing Friction
Pisaturo M.Investigation
;Senatore A.Writing – Review & Editing
;
2023-01-01
Abstract
Development of sustainable routes for nanoparticle synthesis is one of the important research issues in waste management. Herein, we synthesized the nano iron oxide-cubic (NIO-C) nanoparticles from iron waste sludge for application as additive in polyethylene glycol (PAG46) lubricant. X-ray diffraction (XRD) evidenced the presence of maghemite as a dominant phase of the NIO-C nanoparticles, having (311) crystallographic plane at the diffraction angle of 35.27°. High-resolution transmission electron microscopy (HR-TEM) confirmed the presence of cubic maghemite of ~ 20 nm in size. The NIO-C nanoparticles served as the additive in the PAG46 lubricant, showing a decrease in the coefficient of friction by 46% at 25 °C and by 36% at 80 °C. Reducing the coefficient of friction was assigned to the cubic NIO-C fractions, enhancing the smoothness of the metal plates. This study describes economic and environmentally sustainable method for producing cubic maghemite nanoparticles. Graphical Abstract: [Figure not available: see fulltext.]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
