a kind of ceo 2 /fgo nano lubricating oil additive and bionic preparation method
A lubricating oil additive, nanotechnology, applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of uneven dispersion of cerium oxide nanoparticles, poor anti-wear and anti-friction effects, complicated preparation methods, etc. Simple and easy to operate, safe and pollution-free in the preparation process, and environmentally friendly raw materials
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Embodiment 1
[0031] Take 75mg of fluorinated-graphene oxide and ultrasonically disperse it in a mixed solution of 37.5ml of ethanol and water (the volume ratio of ethanol to water is 1:1), and ultrasonically obtain a homogeneous solution; take 0.0775g of Ce(NO 3 ) 3 ·6H 2 O was ultrasonically dispersed in a mixed solution of 37.5 ml ethanol and water (the volume ratio of ethanol to water was 1:1); under magnetic stirring conditions, Ce(NO 3 ) 3 ·6H 2O solution was dropped into the fluorinated-graphene oxide solution at a constant speed, and magnetically stirred for one hour; after the stirring was completed, 0.0214g NaOH was taken and added to the above mixed solution; the above precursor solution was transferred to a 100 ml hydrothermal reaction kettle, and After reacting at ℃ for 12 hours, the reaction kettle was naturally cooled to room temperature; the product obtained after cooling was subjected to centrifugation, washed with absolute ethanol and distilled water, and then freeze-dr...
Embodiment 2
[0033] Fluorinated-graphene oxide is ultrasonically dispersed in 200ml of tris(hydroxymethyl)aminomethane-hydrochloric acid buffer (PH=8.5), to obtain a concentration of 0.25mg / ml fluorinated-graphene oxide dispersion; Slowly add 0.1g dopamine hydrochloride to the fluorinated-graphene oxide dispersion, and stir magnetically for 12 hours; the obtained product is centrifuged, washed with absolute ethanol and distilled water, and then freeze-dried to obtain polydopamine / fluorinated-graphene oxide . Take 75mg polydopamine / fluorinated-graphene oxide and disperse it in the mixed solution of 37.5ml ethanol and water, sonicate to a homogeneous solution; take 0.0775g Ce(NO 3 ) 3 ·6H 2 O was ultrasonically dispersed in a mixed solution of 37.5ml ethanol and water; under magnetic stirring conditions, the Ce(NO 3 ) 3 ·6H 2 The O solution was dropped into the fluorinated-graphene oxide solution at a constant speed, and stirred magnetically for one hour; after the stirring was complete...
Embodiment 3
[0035] Fluorinated-graphene oxide is ultrasonically dispersed in 200ml of tris(hydroxymethyl)aminomethane-hydrochloric acid buffer (PH=8.5), to obtain a concentration of 0.25mg / ml fluorinated-graphene oxide dispersion; Slowly add 0.4g dopamine hydrochloride to the fluorinated-graphene oxide dispersion, and stir magnetically for 12 hours; the product obtained is centrifuged and then washed with absolute ethanol and distilled water and then freeze-dried to obtain polydopamine / fluorinated-graphene oxide . Take 75mg polydopamine / fluorinated-graphene oxide and disperse it in the mixed solution of 37.5ml ethanol and water (the volume ratio of ethanol and water is 1:1), sonicate to a homogeneous solution; take 0.0775g Ce(NO 3 ) 3 ·6H 2 O was ultrasonically dispersed in a mixed solution of 37.5ml ethanol and water; under magnetic stirring conditions, the Ce(NO 3 ) 3 ·6H 2 O solution was dropped into the fluorinated-graphene oxide solution at a constant speed, and magnetically sti...
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