Carbon nano-onions (CNOs) have been synthesized by the catalytic decomposition of methane at atmospheric pressure. The catalyst was prepared by a reduction-substitution method. The produced CNOs have a regular shape with concentric carbon layers with an external diameter of about 50 nm. A systematic study of their stability in Group I and III base oils, with and without low amounts of dispersant/surfactants, was performed, revealing the effectiveness of the synergistic combination of SDBS and Tween 80. Tribological tests showed a significant reduction of friction coefficient and wear scar diameter up to 23 % and 20 %.

Anti-friction and anti-wear surfactant-assisted nano-onions stable formulations for lubricants

Sarno M.
Writing – Review & Editing
;
Cirillo C.
Investigation
;
Senatore A.
Writing – Review & Editing
2021-01-01

Abstract

Carbon nano-onions (CNOs) have been synthesized by the catalytic decomposition of methane at atmospheric pressure. The catalyst was prepared by a reduction-substitution method. The produced CNOs have a regular shape with concentric carbon layers with an external diameter of about 50 nm. A systematic study of their stability in Group I and III base oils, with and without low amounts of dispersant/surfactants, was performed, revealing the effectiveness of the synergistic combination of SDBS and Tween 80. Tribological tests showed a significant reduction of friction coefficient and wear scar diameter up to 23 % and 20 %.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4765724
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