Details

Autor(en) / Beteiligte

• Lindenbeck, Lucie
• Beele, Björn B
• Morsali, Mohammad
• Budnyk, Serhiy
• Frauscher, Marcella
• Chen, Jianhong
• Sipponen, Mika H
• Slabon, Adam
• Rodrigues, Bruno V. M

Titel

MoS nanoflower-decorated lignin nanoparticles for superior lubricant properties

Ist Teil von

• Nanoscale, 2023-05, Vol.15 (2), p.914-921

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Lignin has been, for a long time, treated as a low-value waste product. To change this scenario, high-value applications have been recently pursued, e.g. , the preparation of hybrid materials with inorganic components. Although hybrid inorganic-based materials can benefit from the reactive lignin phenolic groups at the interface, often responsible for optimizing specific properties, this is still an underexplored field. Here, we present a novel and green material based on the combination of hydroxymethylated lignin nanoparticles (HLNPs) with molybdenum disulfide (MoS 2 ) nanoflowers grown via a hydrothermal route. By bringing together the lubricant performance of MoS 2 and the structural stability of biomass-based nanoparticles, a MoS 2 -HLNPs hybrid is presented as a bio-derived additive for superior tribological performances. While FT-IR analysis confirmed the structural stability of lignin after the hydrothermal growth of MoS 2 , TEM and SEM micrographs revealed a homogeneous distribution of MoS 2 nanoflowers (average size of 400 nm) on the HLNPs (average size of 100 nm). Regarding the tribological tests, considering a pure oil as reference, only HLNPs as bio-derived additives led to a reduction in the wear volume of 18%. However, the hybrid of MoS 2 -HLNPs led to a considerably higher reduction (71%), pointing out its superior performance. These results open a new window of opportunity for a versatile and yet underexplored field that can pave the way for a new class of biobased lubricants. Herein we report a hybrid organic-inorganic nanomaterial that combines the structural stability of colloidal lignin nanoparticles with the lubricant performance of MoS 2 nanoparticles.