Dispersion Stability and Lubrication Mechanism of Nanolubricants: A Review

Azman, Nurul Farhanah; Samion, Syahrullail

doi:10.1007/s40684-019-00080-x

Cited by 99 publications

(53 citation statements)

References 137 publications

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“…With the increasing consciousness for environmental protection and the reinforcement of environmental legislation, the traditional sulfur and phosphorus-based oil additives have gradually become inadequate for practical applications. 1,2 For the past decades, nanoparticles have attracted considerable attention as potential oil additives due to their excellent physical and chemical properties. 3 In respect of this, the layered nanoparticles based on strong intraplanar and weak interplanar bonds, such as graphite and its derivatives, 4 hexagonal boron nitride, 5 zirconium phosphates, 6 layered double hydroxides, 7 and transition metal dichalcogenides 8,9 have been recognised as promising alternatives for traditional oil additives.…”

Section: Introductionmentioning

confidence: 99%

PEG‐assisted solvothermal synthesis of MoS₂ nanosheets with enhanced tribological property

Chen

2020

Lubrication Science

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Molybdenum disulfide (MoS2) nanoparticles are widely used as oil additives for obtaining low friction and wear. In this article, MoS2 nanosheets with ultrathin shape and structure defects were prepared by a facile solvothermal method with the aid of polyethylene glycol (PEG 200). The products were analysed by X‐ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X‐ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR). Results indicated that PEG 200 played a crucial role as the shape controller in the formation of different MoS2 structures. Interestingly, the prepared MoS2 perform excellent in improving the friction‐reducing and antiwear properties of oils. More importantly, the lubricating behaviour of the obtained MoS2 nanosheets as oil additives was still effective in the harsh condition of heavy load and high temperature. Further, the excellent lubrication performance of the prepared MoS2 was discussed based on the exfoliation into individually ultrathin nanosheets and nanosized debris, and the formation of MoS2‐based tribofilm inside the wear tracks.

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Section: Introductionmentioning

confidence: 99%

PEG‐assisted solvothermal synthesis of MoS₂ nanosheets with enhanced tribological property

Chen

2020

Lubrication Science

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“…[28] As the lubricant additive, the dispersivity and stability of 2D nanomaterials in oil are vital for practical applications. [5] We examined the dispersivity and stability of the as-obtained Zn(Bim)(OAc) nanosheets in liquid paraffin, base oil (150 SN), and glycerol. Figure 3 shows the UV-Vis spectra for varying concentrations of F I G U R E 2 (a) HR-TEM image, (b) SAED pattern, and (c) AFM topographic images of NS-Zn(Bim)(OAc)-MeOH the as-obtained Zn(Bim)(OAc) nanosheets in three types of oil as a function of standing time.…”

Section: Resultsmentioning

confidence: 99%

Ultrasonic‐assisted exfoliation for 2D Zn(Bim)(OAc) nanosheets used as an oil‐soluble additive in lubricants

Wang

Liu

Cheng

2020

Applied Organom Chemis

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The interface issue of two-dimensional (2D) nanomaterials has seriously restricted their applications in the past. To date, there have been few reports on the friction behavior of 2D MOFs. Herein, 2D Zn(Bim)(OAc) metal-organic framework structure nanosheets with a thickness of ca. 4 nm were successfully prepared via convenient ultrasonic-assisted exfoliation in solvents. For the first time, we probed the dispersion performance of the as-obtained 2D Zn(Bim) (OAc) in different oils, and intensively investigated the tribological behavior. The results indicated that the as-obtained 2D Zn(Bim)(OAc) used as an additive showed the preferable friction reducing performance and wear resistance in liquid paraffin, and showed the better dispersivity in glycerol.

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“…The preparation of nanolubricants is considered a substantial step in building a stabilized and durable nanofluid system. Based on nanofluid preparation, two methods have been utilized to produce nanofluids, named single-step and two-step methods [37,39,[44][45][46][47][48][49].…”

Section: Preparation Methods Of Nanolubricantsmentioning

confidence: 99%

Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review

et al. 2021

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Reducing power losses in engines is considered a key parameter of their efficiency improvement. Nanotechnology, as an interface technology, is considered one of the most promising strategies for this purpose. As a consumable liquid, researchers have studied nanolubricants through the last decade as potential engine oil. Nanolubricants were shown to cause a considerable reduction in the engine frictional and thermal losses, and fuel consumption as well. Despite that, numerous drawbacks regarding the quality of the processed nanolubricants were discerned. This includes the dispersion stability of these fluids and the lack of actual engine experiments. It has been shown that the selection criteria of nanoparticles to be used as lubricant additives for internal combustion engines is considered a complex process. Many factors have to be considered to investigate and follow up with their characteristics. The selection methodology includes tribological and rheological behaviours, thermal stability, dispersion stability, as well as engine performance. Through the last decade, studies on nanolubricants related to internal combustion engines focused only on one to three of these factors, with little concern towards the other factors that would have a considerable effect on their final behaviour. In this review study, recent works concerning nanolubricants are discussed and summarized. A complete image of the designing parameters for this approach is presented, to afford an effective product as engine lubricant.

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Dispersion Stability and Lubrication Mechanism of Nanolubricants: A Review

Cited by 99 publications

References 137 publications

PEG‐assisted solvothermal synthesis of MoS₂ nanosheets with enhanced tribological property

PEG‐assisted solvothermal synthesis of MoS₂ nanosheets with enhanced tribological property

Ultrasonic‐assisted exfoliation for 2D Zn(Bim)(OAc) nanosheets used as an oil‐soluble additive in lubricants

Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review

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Dispersion Stability and Lubrication Mechanism of Nanolubricants: A Review

Cited by 99 publications

References 137 publications

PEG‐assisted solvothermal synthesis of MoS2 nanosheets with enhanced tribological property

PEG‐assisted solvothermal synthesis of MoS2 nanosheets with enhanced tribological property

Ultrasonic‐assisted exfoliation for 2D Zn(Bim)(OAc) nanosheets used as an oil‐soluble additive in lubricants

Recent Advances in Preparation and Testing Methods of Engine-Based Nanolubricants: A State-of-the-Art Review

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PEG‐assisted solvothermal synthesis of MoS₂ nanosheets with enhanced tribological property

PEG‐assisted solvothermal synthesis of MoS₂ nanosheets with enhanced tribological property