Graphene quantum dots prepared by gaseous detonation toward excellent friction-reducing and antiwear additives

He, Chunnian; Yan, Honghao; Wang, Xiaohong; Bai, Ming

doi:10.1016/j.diamond.2018.09.019

Cited by 24 publications

(8 citation statements)

References 44 publications

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“…2D Materials, as a shining star in various fields, also possess excellent anti-friction properties because of the enhanced film formation [127,128], the self-healing or mending effects [129], and the ball bearing effect [130]. The liquid lubrication with additives of graphene class materials attracted a lot of attention recently.…”

Section: Inorganic Additivementioning

confidence: 99%

A review of recent advances in tribology

et al. 2020

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The reach of tribology has expanded in diverse fields and tribology related research activities have seen immense growth during the last decade. This review takes stock of the recent advances in research pertaining to different aspects of tribology within the last 2 to 3 years. Different aspects of tribology that have been reviewed including lubrication, wear and surface engineering, biotribology, high temperature tribology, and computational tribology. This review attempts to highlight recent research and also presents future outlook pertaining to these aspects. It may however be noted that there are limitations of this review. One of the most important of these is that tribology being a highly multidisciplinary field, the research results are widely spread across various disciplines and there can be omissions because of this. Secondly, the topics dealt with in the field of tribology include only some of the salient topics (such as lubrication, wear, surface engineering, biotribology, high temperature tribology, and computational tribology) but there are many more aspects of tribology that have not been covered in this review. Despite these limitations it is hoped that such a review will bring the most recent salient research in focus and will be beneficial for the growing community of tribology researchers.

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Section: Inorganic Additivementioning

confidence: 99%

A review of recent advances in tribology

et al. 2020

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“…The hybrid carbon is composed of carbon quantum dots and graphene oxide. Yan et al directly prepared GQD by the gas detonation method within 3–5 ms with hydrogen and oxygen as explosion sources and benzoic acid as the precursor. Although the preparation process and yield of these CDs lubricant additives have been improved, the production conditions are harsh and dangerous.…”

Section: Introductionmentioning

confidence: 99%

Synthetic Kilogram Carbon Dots for Superior Friction Reduction and Antiwear Additives

et al. 2022

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Because of the high synthesis cost, strong chemical inertness, complex process, and easy to endanger environment of traditional carbon-based nanolubricant additives, the development of its application in lubrication is limited. Therefore, a new type of lubricant additive with low cost, high yield, high performance, and environmental protection is urgently needed. Herein, a kilogram-scale carbon dots (CDs) lubricant additive was prepared by a simple and green one-step reaction of aldol condensation, which showed excellent lubricating properties in water and sunflower oil. The tribological properties of the CDs lubricant additive at different concentrations, loads, and speeds were systematically studied. The results show that the average friction coefficient of water is significantly reduced by 75% by a CDs lubricant additive. In particular, CDs not only exhibited excellent service life and lubrication stability during friction but also kept the friction coefficient change rate of sunflower seed oil close to 0 within 500 min. According to the tribological evaluation and wear surface analysis, the lubrication mechanism of CDs was attributed to their own morphological characteristics and abundant oxygen-containing functional groups on the surface. In the friction process, the charge adsorption effect, the adsorption protective film, and the hydrogen bonding layer are generated, which play an essential role in obvious antiwear and friction reduction. Therefore, this work provides a reference for the preparation of high-performance and high-yield lubricant additives.

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“…BPQDs have attained growing expectations in material and chemical sciences because they have applications in various fields such as bioimaging [25,26], biosensing [27][28][29], drug delivery [30], photodynamic therapy [31,32], solar cells [33], photocatalysis [34], and electrocatalysis [35]; and as photovoltaic devices [36]. The use of zero-dimensional (0D) carbon quantum dots (CQDs) and transition metal dichalcogenides quantum dots (TMDQDs) as additives can efficiently improve the lubrication performance of water-based lubricants [37][38][39][40][41]. Moreover, BPQDs also have high potential as high-performance water-based lubricant additives, since they have a uniform size distribution, good dispersion stability in water, desired reactivity, and excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

et al. 2020

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Black phosphorus quantum dots (BPQDs), obtained via a typical solution-based top-down method, were used as water-based lubricant additives. BPQDs exhibited remarkable friction reduction and anti-wear properties even at the ultra-low concentration of 0.005 wt%, which reduced the friction coefficient and wear volume of the base liquid by 32.3% and 56.4%, respectively. In addition, the load-supporting capacity of the base liquid increased from 120 N to over 300 N. BPQDs-based additives exhibited a relatively long lifetime at a relatively high load of 80 N. The performance of BPQDs considerably exceeded that of the BP; this may be attributed to their small and uniform particle size, good dispersion stability in water, and high reactivity at the frictional surfaces. The results of the surface wear resistance analysis demonstrated that a robust tribochemical film with a thickness of approximately 90 nm was formed on the rubbing surface lubricated with 0.005 wt% of BPQDs dispersion. Moreover, the film served as a direct evidence of the excellent tribological performance of BPQDs.

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Graphene quantum dots prepared by gaseous detonation toward excellent friction-reducing and antiwear additives

Cited by 24 publications

References 44 publications

A review of recent advances in tribology

A review of recent advances in tribology

Synthetic Kilogram Carbon Dots for Superior Friction Reduction and Antiwear Additives

Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

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