TY - JOUR
T1 - Surface-functionalized nanoMOFs in oil for friction and wear reduction and antioxidation
AU - Wu, Wei
AU - Liu, Jianxi
AU - Li, Zhihuan
AU - Zhao, Xiangyuan
AU - Liu, Guoqiang
AU - Liu, Shujuan
AU - Ma, Shuanhong
AU - Li, Weimin
AU - Liu, Weimin
N1 - Publisher Copyright:
© 2020
PY - 2021/4/15
Y1 - 2021/4/15
N2 - Engineering the surface and interface of nanomaterials is critical for enhancing interfacial compatibility and dispersion stability in liquid. In this paper, we report dialkyldithiophosphate (DDP) functionalized zirconium-based metal organic frameworks (Zr-MOFs) nanoparticles as lubricating oil additives that can achieve friction and wear reduction and antioxidation. DDP molecules were coordinatively grafted onto the MOFs nanoparticles (nanoMOFs) using ultrasonication assisted self-assembly. Compared with pristine nanoMOFs, dispersity of the DDP-modified ones was significantly improved in both organic solvents and base oil. Reduction in both coefficient of friction and wear volume was achieved by adding Zr-MOFs@DDP in oil, and their oxidation induction time was expanded much longer than that of the base oil. Additionally, the lubricating and antioxidative performance of the Zr-MOFs@DDP in oil were correlated with their concentration and BET surface area respectively. Our results establish surface-functionalized nanoMOFs as oil additives that can support friction and wear reduction and improve the antioxidative performance.
AB - Engineering the surface and interface of nanomaterials is critical for enhancing interfacial compatibility and dispersion stability in liquid. In this paper, we report dialkyldithiophosphate (DDP) functionalized zirconium-based metal organic frameworks (Zr-MOFs) nanoparticles as lubricating oil additives that can achieve friction and wear reduction and antioxidation. DDP molecules were coordinatively grafted onto the MOFs nanoparticles (nanoMOFs) using ultrasonication assisted self-assembly. Compared with pristine nanoMOFs, dispersity of the DDP-modified ones was significantly improved in both organic solvents and base oil. Reduction in both coefficient of friction and wear volume was achieved by adding Zr-MOFs@DDP in oil, and their oxidation induction time was expanded much longer than that of the base oil. Additionally, the lubricating and antioxidative performance of the Zr-MOFs@DDP in oil were correlated with their concentration and BET surface area respectively. Our results establish surface-functionalized nanoMOFs as oil additives that can support friction and wear reduction and improve the antioxidative performance.
KW - Antioxidative performance
KW - DDP functionalization
KW - Dispersion stability
KW - MOFs nanoparticles
KW - Tribological properties
UR - https://www.scopus.com/pages/publications/85099222803
U2 - 10.1016/j.cej.2020.128306
DO - 10.1016/j.cej.2020.128306
M3 - 文章
AN - SCOPUS:85099222803
SN - 1385-8947
VL - 410
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 128306
ER -