Comparison of synthesis routes of inorganic fullerene-like nano-additives for wind turbine lubrication: Application of Life Cycle Assessment approach

Inorganic fullerene like nanoparticles made of transition metal dichalcogenides MX₂ (M=Mo, W,..., X=S, Se...) are considered as anti-wear and friction additives allowing excellent lubricating properties thanks to their small size and morphology. Comparing their different synthesis routes is of interest with respect to environmental impact assessment. This issue has been addressed using Life Cycle Assessment (LCA) approach in the case of MoS₂ nanoparticles. We have used available inventory data for reactants and electricity supply obtained from literature and database. The objectives were to evaluate the feasibility of this approach at design stage for comparison of the most relevant synthesis strategies of MoS₂.