TY - JOUR
T1 - Covalent Grafting of Dialkyl Dithiophosphate onto MXene Nanosheets for Synergistic Lubrication Enhancement
AU - Sun, Yiping
AU - Jin, Guangkai
AU - Xue, Shenghua
AU - Li, Weimin
AU - Lou, Wenjing
AU - Liu, Shujuan
AU - Ye, Qian
AU - Liu, Weimin
N1 - Publisher Copyright:
© 2026 American Chemical Society.
PY - 2026/7/28
Y1 - 2026/7/28
N2 - As an emerging two-dimensional (2D) material, MXene holds great promise as a lubricating additive. In this work, a dialkyl dithiophosphate (DDP)-functionalized MXene additive was synthesized by assembling epigallocatechin gallate (EGCG) and polyethylenimine (PEI) on Ti3C2Tx nanosheets, followed by the covalent grafting of DDP via a Michael addition reaction. The resulting DDP-MXene additive exhibits an enhanced tribological performance. With an addition of 0.5 wt %, the COF decreased to 0.10, compared with 0.32 for the base oil, and the wear volume decreased by 86%. In addition, the additive exhibits a good load-carrying capacity of up to 900 N. This improved lubrication performance arises from a synergistic lubrication mechanism: MXene nanosheets provide physical shearing, while a robust tribochemical film forms from DDP decomposition, providing improved antifriction and antiwear capabilities in severe service environments.
AB - As an emerging two-dimensional (2D) material, MXene holds great promise as a lubricating additive. In this work, a dialkyl dithiophosphate (DDP)-functionalized MXene additive was synthesized by assembling epigallocatechin gallate (EGCG) and polyethylenimine (PEI) on Ti3C2Tx nanosheets, followed by the covalent grafting of DDP via a Michael addition reaction. The resulting DDP-MXene additive exhibits an enhanced tribological performance. With an addition of 0.5 wt %, the COF decreased to 0.10, compared with 0.32 for the base oil, and the wear volume decreased by 86%. In addition, the additive exhibits a good load-carrying capacity of up to 900 N. This improved lubrication performance arises from a synergistic lubrication mechanism: MXene nanosheets provide physical shearing, while a robust tribochemical film forms from DDP decomposition, providing improved antifriction and antiwear capabilities in severe service environments.
UR - https://www.scopus.com/pages/publications/105046270158
U2 - 10.1021/acs.langmuir.6c03158
DO - 10.1021/acs.langmuir.6c03158
M3 - 文章
C2 - 42438419
AN - SCOPUS:105046270158
SN - 0743-7463
VL - 42
SP - 21696
EP - 21705
JO - Langmuir
JF - Langmuir
IS - 29
ER -