Remediation of environmental toxicants using carbonaceous materials: opportunity and challenges

Gill, Sukhbir Singh; Goyal, Taru; Goswami, Megha; Patel, Preeti; Gupta, Ghanshyam Das; Verma, Sant Kumar

doi:10.1007/s11356-023-27364-9

Cited by 8 publications

(1 citation statement)

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“…The addition of nanoadditives can reduce friction and wear due to the presence of rolling friction instead of sliding friction. , Various nanomaterials, such as metals (Ag, Cu), , metal oxides (CuO, TiO 2 ), , and inorganic substances (SiO 2 , MnO 2 ), , have been investigated as base oil additives and found to have an excellent friction reduction and antiwear behavior. Among these additives, carbon-based materials have attracted great attention on account of the advantages of their special structure, stable chemical properties, thermal conductivity, biocompatibility, and small environmental impact. − …”

Section: Introductionmentioning

confidence: 99%

Silica-Coated N-Doped Porous Carbon Nanospheres as Antiwear and Friction-Reduction Lubricant Additives

Bai,

Wang,

Xue

et al. 2023

ACS Appl. Nano Mater.

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In this study, silica-coated nitrogen-doped porous carbon nanospheres (SiO 2 @N-MCNs) were successfully prepared in a facile way. Polydopamine was first grafted onto hyper-crosslinked polystyrene nanospheres via oxidative polymerization. Meanwhile, silica could be embedded in a polydopamine layer by the hydrolyzation of tetraethyl orthosilicate. Eventually, SiO 2 @N-MCNs were obtained after carbonization. The as-prepared SiO 2 @ N-MCNs exhibited favorable dispersion stability and improved antiwear and friction-reducing properties when used as lubricant additives. The average friction coefficient (COF) of base oil was reduced to 0.105 from 0.162 after adding 2.0 wt % SiO 2 @N-MCNs, the corresponding wear volume was reduced by 97.1%, and particularly the load capacity was increased to 550 N. The excellent antifriction and antiwear properties are attributed to the formation of a successive protective film, including iron oxides, carbonitride, carbon film, and the repairing and filling effect of SiO

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