Tribological properties of graphite oxide derivative as nano-additive: Synthesized from the waster carbon source

Graphite oxide (GO) with N doping is synthesized from the waste carbon source. The GO products obtained at 1200-1400 degrees C are utilized as nano-additive in synthetic engine oil. The GO is produced in the form of layered structure with Ca compound incorporation and functional groups. GO addition has improved the friction (2.8-21.1% reduction) and wear (8.2-18.5% reduction in worn volume) properties due to its easy shear force of layered structure. The maximum performance is achieved in the GO synthesized at 1300 degrees C. Study reveals the potential use of a waste carbon source converted to GO that can be directly used as nano-additive.