Details

Autor(en) / Beteiligte

• Ismail, Nurul Athirah
• Zulkifli, Nurin Wahidah Mohd
• Chowdhury, Zaira Zaman
• Johan, Mohd Rafie

Titel

Functionalization of graphene-based materials: Effective approach for enhancement of tribological performance as lubricant additives

Ist Teil von

• Diamond and related materials, 2021-05, Vol.115, p.108357, Article 108357

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2021

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The performance of lubricants greatly depends on the additives in their formulation. Considerable attention has been paid to graphene for the formulation of lubricant as anti-wear or anti-friction additives. In the lubricant additive industry, the introduction of graphene-based materials will enable improvement in the lubricant's fundamental characteristics by increasing its strength and load bearing capability. It is then no wonder that the race to commercialize graphene has been on for the past few years since the discovery of the material in 2004. Pristine graphene has a high electrical conductivity; thus, it is desirable for applications such as semiconductors, battery, and sensors. Meanwhile, functionalized graphene is desirable for other applications, including lubricant additives, to achieve a stable dispersion matrix or medium. The graphene structure can be tuned via chemicals or physical functionalization methods to meet the requirement needed by specific applications. In this review, the limitation of graphene as lubricant additives is discussed. Subsequently, methods on the functionalization of graphene are reviewed. Finally, the recent progress on functionalized graphene as lubricant additives are discussed in detail. [Display omitted] •Functionalized graphene is desirable for lubricant additives application.•The structure of graphene can be tuned via chemical or physical functionalization methods.•Dispersion stability limits the application of graphene as lubricant additives.•Covalent functionalization methods of graphene are commonly used.•The functionalized graphene demonstrated superior tribological behavior.