Two-dimension layered nanomaterial as lubricant additives: Covalent organic frameworks beyond oxide graphene and reduced oxide graphene

Wen, Ping; Lei, Yongzhen; Li, Wenqian; Fan, Mingjin

doi:10.1016/j.triboint.2019.106051

Cited by 40 publications

(8 citation statements)

References 33 publications

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“…Figure a shows the XRD patterns of ATC with the alkyl chain from C10 to C20 compared to those of pristine TriC. For all samples, the diffraction peaks at about 10.5°, 19.6°, and 27.3° are attributed to the (010), (020), and (001) planes, matching well with previous reports . The distinctly increased intensity at the (010) plane for the ATC samples indicates that the original sheets are scissored into pieces along the (110) direction, while the planar integrity is retained markedly.…”

Section: Resultssupporting

confidence: 84%

“…Triazine-based covalent organic frameworks (TriC) sheets that were modified by carboxylic acids were fabricated according to our previous work. 23 All carboxylic acids were purchased from Aladdin Chemical Reagent Co. Ltd. (Shanghai, China) Absolute alcohol was purchased from Sinopharm Chemical Reagent Co. Ltd. All chemicals used here are commercially available and were used without further purification. The typical preparation procedure of ATC proceeds as follows: in a 50 mL beaker, 1.00 g of TriC was weighed and added, followed by the addition of 20 mL of absolute alcohol.…”

Section: Methodsmentioning

confidence: 99%

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Multilayer Tribofilm: An Unique Structure to Strengthen Interface Tribological Behaviors

Wen

Lei

Yan

et al. 2021

ACS Appl. Mater. Interfaces

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Tribofilm configuration under the boundary lubrication region is an essential concern to gain insight into the tribological enhancement of the two-dimensional (2D) nano materials toward base oils. In this work, several alkyl carboxylic acids modified 2D triazine-based covalent organic frameworks (ATC) nano platelets were fabricated and served as lubrication additives. When carbon atoms add up to 16, the best lubricating performance is exhibited at an additive concentration of 0.05 wt % and the friction coefficient and wear volume are, respectively, reduced by 56.0% and 89.6% as compared to those of pure PAO 10 base oil. The analysis of the focused ion beam-transmission electron microscope (FIB-TEM) on the worn surface reveals that an alternately multilayer tribofilm consisting of 2D platelet additives and oxides and/or metallic soap salts is formed on the frictional interface of steel substrate, with a well-ordered arrangement along the sliding direction, which dominates the contributions of the excellent lubrication.

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Section: Resultssupporting

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Multilayer Tribofilm: An Unique Structure to Strengthen Interface Tribological Behaviors

Wen

Lei

Yan

et al. 2021

ACS Appl. Mater. Interfaces

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“…Nanomaterials as additives to promote the friction-reducing and anti-wear properties of PEG-based lubricating oils have been repeatedly confirmed in the literature [66]. Inspired by the extraordinary tribological properties of conventional carbon-based lubricant additives including fullerene, graphene, nanodiamond, carbon nanotubes, and nano-onions, great efforts have been devoted to exploiting the new-type carbon-based lubricant additives for PEG-based lubricating oils [148,149]. Recently, the advances in the preparation of CQDs offer a good opportunity for researchers to exploit CQDs as a high-performance lubricant additive of PEG.…”

Section: Cqds As Additives In Pegmentioning

confidence: 95%

Applications of carbon quantum dots in lubricant additives: a review

Tang

Zhang

2021

J Mater Sci

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Advances in lubricants are vital to the pursuit of energy efficiency and sustainable development. It is well known that the essence of lubricating oil is lubricant additives, especially the friction-reducing and anti-wear additives. Carbon quantum dots (CQDs), a novel zero-dimensional carbon-based nanomaterial, have attained growing expectations in material and chemical sciences because of their extraordinary properties such as low toxicity and environmentally friendly, high chemical and thermal stability, and good designability. Since their discovery, CQDs have shown great potential in many applications including sensors, medicine, photovoltaic devices, biology, and tribology. The latest application of CQDs as the high-performance friction-reducing and antiwear additives has garnered increasing attention. With the in-depth study, CQDs have gradually exhibited their excellent tribological properties, especially acted as additives in lubricating base oils. This paper has reviewed the progress in the research and development of CQDs-based lubricant additives by introducing lots of successful applications of CQDs-based additives in the present work and then highlighted the friction-reducing and anti-wear property, superiority, as well as the lubrication mechanism of CQDs as an additive, along with some discussion on challenges and perspectives in this significant and promising field. Finally, we offered a series of suggestions for developing the next-generation high-performance CQDs-based lubricant additives.

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“…According to the data, ∼23% (119 EJ) of the world’s total energy is wasted in interface friction, including 20% (103 EJ) that is consumed in friction and 3% (16 EJ) that is used for maintenance and remanufacturing of worn parts due to friction . To reduce friction and wear of contacts, it is essential to make full use of new lubricants, antiwear coatings, and lubrication technologies. − As is known to all, there are many two-dimensional materials as solid lubricants, such as graphene, MXenes, transition metal sulfide (WS 2 and MoS 2 ), boron nitride (BN), and so on. − In the last 5 years, MXenes, as emerging two-dimensional transition metal carbides or carbonitrides, have a nanolaminated structure and weak interlayer interaction like graphite or MoS 2 , which are considered as a potential solid lubricating material. − Moreover, there are a number of functional groups on surfaces and edges (F – , −O, and −OH), so the modification and exfoliation of MXenes are possible.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Tribological Properties of MXene-Based Composite Films

Chen

Zheng

et al. 2021

Ind. Eng. Chem. Res.

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Solid lubricants have received much attention for their use in special working conditions and limiting environments, such as high temperature, high bearing capacity, moisture, and other harsh environments. Recently, MXenes have become very attractive for their nanolaminated structure like graphite or MoS2 and weak interlayer interactions. For the first time, this work aims to fabricate various MXene composite hexafluoropropylene oxide (HFPO) oligomer acid chloride (HOAC) multilayer films and investigate their friction performance by synthesizing, exfoliating, and modifying the MXene nanosheets. Based on covalent organic framework (COF), field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) results, the tribological performance and load capacity of MXene-based films modified with polydopamine (PDA) were significantly enhanced. Particularly, Si-MX/PDA-HOAC showed the best load-carrying capacity up to 600 mN and durability. It was speculated that a lubricating protection film containing FeF2 formed on the silicon/steel surfaces, showing excellent tribological properties by MXene/PDA and HOAC synergy.

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Two-dimension layered nanomaterial as lubricant additives: Covalent organic frameworks beyond oxide graphene and reduced oxide graphene

Cited by 40 publications

References 33 publications

Multilayer Tribofilm: An Unique Structure to Strengthen Interface Tribological Behaviors

Multilayer Tribofilm: An Unique Structure to Strengthen Interface Tribological Behaviors

Applications of carbon quantum dots in lubricant additives: a review

Preparation and Tribological Properties of MXene-Based Composite Films

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