Ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol)

Wang, Baogang; Tang, Weiwei; Lu, Hongsheng; Huang, Zhiyu

doi:10.1039/c6ta01098a

Cited by 136 publications

(59 citation statements)

References 40 publications

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“…However, Wang et al [55] have already reported their application in tribology in combination with ILs. Carbon nanodots capped by an IL have been synthesized and dispersed in polyethyleneglycol.…”

Section: Ionanocarbon Lubricantsmentioning

confidence: 99%

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

et al. 2017

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The present overview will focus on the tribological applications of what we have called ionanocarbon lubricants, that is, the combination of carbon nanophases (graphene, carbon nanotubes, nanodiamonds, carbon nanodots) and room-temperature ionic liquids in new dispersions, blends, or modified nanostructures and their use in tribology, lubrication, and surface engineering as friction-reducing, antiwear, and surface-protecting agents in thin films and composite materials. Further research lines and factors that limit the practical applications of the outstanding research results are also highlighted. The very recent results in these lines of research make this a necessary brief review.

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Section: Ionanocarbon Lubricantsmentioning

confidence: 99%

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

et al. 2017

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“…Ma et al [28] fabricated novel CQD and IL nanoparticles and discovered that the tribological behavior of these nanoparticles affects the lubrication of PEG, similar to the results found by Zhang [27]. Wang et al [29] used a one-pot pyrolysis method to synthesize IL (1-aminopropyl-3methylimidazolium bromide)-capped carbon dot particles. They indicated that the friction and wear mechanisms of composite particles involve the rolling, mending, and polishing of composite particles under friction, resulting in outstanding tribological behaviors in PEG.…”

Section: Introductionmentioning

confidence: 70%

Tribological behaviors of Ni-modified citric acid carbon quantum dot particles as a green additive in polyethylene glycol

Dearn

Wang

et al. 2019

Friction

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A novel green lubricating oil additive (carbon quantum dot (CQD) particle-doped nickel (Ni-CQD)) was synthesized from citric acid and nickel acetate. The effects of CQD and Ni-CQD nanoparticles on the tribological behaviors of polyethylene glycol (PEG200) were investigated under different loads and reciprocation speeds. The results indicate that CQD and Ni-CQD particles can both enhance the lubrication properties of PEG200. However, the Ni-CQD nanoparticles enhanced the lubrication properties more than the plain CQD particles did. The average friction coefficient and wear rate of PEG200 containing 2 wt% Ni-CQDs were reduced by 35.5% and 36.4%, respectively, compared to PEG200 containing pure CQDs under a load of 8 N and reciprocation speed of 25 mm/s over 60 min. The friction and wear mechanisms are attributed to the fact that friction induces the Ni-CQDs to participate in the formation of a tribofilm, resulting in a low friction coefficient and wear rate.

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“…15,16 After adding a relatively low concentration of CDs, the friction coefficient and wear volume can be effectively reduced compared with pure PEG. [15][16][17][18] Although there have been many studies on CDs in recent years, the specific structure of CDs have not been revealed yet. The core-shell structure is currently a generally accepted theory that under high temperature and high pressure, some precursors will remain on the surface of CDs instead of being carbonized, which allows CDs to retain the properties of the precursor.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial carbon dots derived from polyethylene glycol/polyethyleneimine with potent anti‐friction performance as water‐based lubrication additives

Tang

Zhang

et al. 2021

J of Applied Polymer Sci

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Carbon dots (CDs) are obtained from polyethylene glycol and polyethyleneimine by a simple hydrothermal method at 200 C. The water dispersion of CDs (0.2 wt%) remains transparent even after standing for a month. Next, the tribological properties of CDs as water lubricating additives are evaluated by multifunctional micro-friction tester. Specifically, after adding 0.2 wt% of CDs, the mean friction coefficient and wear volume of water-based lubrication are reduced by 59.77 and 57.97%, respectively. Meanwhile, the antibacterial properties of CDs are evaluated by minimum inhibitory concentrations test, long-lasting antibacterial stability, and biological scanning electron microscopy experiment. The minimum inhibitory concentrations of CDs against Escherichia coli and Staphylococcus aureus are 62.5 and 15.56 μg ml −1 , respectively. And the result show that, after co-cultivation with CDs, the integrity of the bacteria is seriously destroyed, which accelerates the leakage of the cell contents and eventually leads to the death of bacteria. More importantly, the antibacterial performance can be maintained stably at least for 1 month even if the continuously adding of bacterial suspensions. Therefore, as an advanced lubricating additive with antibacterial and anti-friction functions, the prepared CDs have a bright future in the field of water lubrication.

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Ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol)

Abstract: This work presents ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol).

Cited by 136 publications

References 40 publications

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

Tribological behaviors of Ni-modified citric acid carbon quantum dot particles as a green additive in polyethylene glycol

Antibacterial carbon dots derived from polyethylene glycol/polyethyleneimine with potent anti‐friction performance as water‐based lubrication additives

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