In Situ Graphene Formation Induced by Tribochemical Reaction for Sustainable Lubrication

Abstract

Graphene is widely applied as lubricating materials owing to its superior tribological performances. However, its complex synthesis process causes environmental pollution and increases production cost. In the current work, we developed a facile strategy to construct a sustainable lubricant system by generating graphene in situ, which avoided the complicated graphene synthetic process. The novel lubricant system is constructed by introducing cyclopropanecarboxylic acid (CPCa) and metal particles (nickel and copper) into base oil. CPCa molecules undergo tribochemical reaction to produce hydrocarbons serving as the solid lubricant, and metal particles catalyze the graphitization of hydrocarbons. Importantly, friction products can be reused as lubricating additives for base oil and provide better lubrication performance compared with the original lubricant systems. This fully demonstrates the sustainable lubrication ability of friction products and their potential as recyclable lubricant additives. The present work provides a novel perspective for the design and development of green lubricant additives.

CO2 Capture and Conversion into Carbon-Based Tribofilm by In Situ Tribochemical Reaction for Green Lubrication

“…X-ray photoelectron spectrometry (XPS) is utilized to further study the chemical valence state and element composition of the worn surface (Figure ). The binding energies at approximately 284.8, 285.4, and 288.6 eV in the C 1s spectrum are ascribed to C–C, C–O/N, and CO bonds separately (Figure a) . The three peaks at around 531.4, 532.1, and 533.0 eV in the O 1s spectrum correspond to the Fe–O, C–O, and CO bonds, respectively (Figure b).…”

“…The binding energies at approximately 284.8, 285.4, and 288.6 eV in the C 1s spectrum are ascribed to C−C, C−O/N, and C�O bonds separately (Figure 8a). 41 The three peaks at around 531. 8c).…”

Synthesis of long straight‐chain alkane substituted ferrocene with ultra‐robust oil solubility as multifunctional organometallic additive

“…As it is well known that the friction and wear on the interacting surfaces of the mechanical systems engender mechanical inefficiencies and failures, leading to enormous economic loss. 56,57 The exploitation and application of high-performance lubricants are an effective strategy to resolve the above-mentioned problem. Among that, the functional additives are the critical component for endowing the lubricants with excellent anti-wear, antioxidation, and anti-corrosion performances.…”

“…As it is well known that the friction and wear on the interacting surfaces of the mechanical systems engender mechanical inefficiencies and failures, leading to enormous economic loss 56,57 . The exploitation and application of high‐performance lubricants are an effective strategy to resolve the above‐mentioned problem.…”

The Preparations of Fluorographene Nanosheets and Research in Tribological Properties in High Vacuum

“…Tribology experiments showed that the addition of 0.1 wt% of this composite reduced the friction coefficient and the wear diameter by 40% and 36%, respectively. Feng's team built a sustainable lubrication system [16] by generating graphene in situ, thus avoiding the complex graphene synthesis process. A new lubrication system was constructed by introducing cyclopropane carboxylic acid (CPCa) and metal particles (nickel and copper) into the base oil.…”