Superlubricity of Fullerene Derivatives Induced by Host–Guest Assembly

Tan, Shanchao; Shi, Hongyu; Fu, Lulu; Ma, Jing; Du, Xin; Song, Jian; Liu, Yuhong; Zeng, Qingdao; Xu, Haijun; Wan, Jun‐Hua

doi:10.1021/acsami.0c02726

Cited by 31 publications

(14 citation statements)

References 46 publications

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“…coefficient is positively correlated with the absolute value of total energy per unit area. In other words, there is a positive correlation between friction coefficient and interaction strength, which agrees well with the conclusion in our previous researches (Shi et al, 2018;Tan S. C. et al, 2020). The interaction herein includes the interaction between assembled molecules and the interaction between molecules and HOPG substrate.…”

Section: Nanotribological Properties Of Liquid Crystalssupporting

confidence: 92%

“…Based on the theoretical calculation, it was concluded that the friction coefficients at nanoscale were positively correlated with the interaction strength in supramolecular assembly. And in our research of fullerene derivatives (Tan S. C. et al, 2020), we achieved the microscale superlubricity by the construction of ordered host-guest assembly structures. However, further investigation remains necessary to explore the mechanism of tribology and promote the achievement of superlubricity.…”

Section: Introductionmentioning

confidence: 99%

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Insight Into the Superlubricity and Self-Assembly of Liquid Crystals

et al. 2021

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Liquid crystals are promising molecular materials in the application of lubrication. Herein, the microscale solid superlubricity is accomplished by the construction of uniform and ordered self-assembly of several liquid crystals. The self-assembly structures on a highly oriented pyrolytic graphite (HOPG) surface are explicitly revealed by using scanning tunneling microscopy (STM). Meanwhile, the nanotribological performance of the self-assemblies are measured by using atomic force microscopy (AFM), revealing ultralow friction coefficients lower than 0.01. The interaction energies are calculated by density functional theory (DFT) method, indicating the positive correlation between friction coefficients and interaction strength. The effort on the self-assembly and superlubricity of liquid crystals could enhance the understanding of the nanotribological mechanism and benefit the further application of liquid crystals as lubricants.

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Section: Nanotribological Properties Of Liquid Crystalssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Insight Into the Superlubricity and Self-Assembly of Liquid Crystals

et al. 2021

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“…As shown in Fig. 2, the most currently used carbon-based lubricant additives including fullerenes [74], graphene [75], nanographites [76], carbon nanotubes [77], and onion-like carbon [78]. Although the above carbonbased nanomaterials as additives exhibited favorable friction-reducing, anti-wear, and extreme pressure properties, they also have some fatal drawbacks.…”

Section: Introductionmentioning

confidence: 99%

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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“…As an additive in fluid lubrication, graphene can be added to different types of fluid lubrication systems to conspicuously improve the lubrication performance and is an ideal lubricant material for rotating/sliding contact. [ 18,19 ] The 3D graphene [ 20 ] we used is a new method to prepared 3D framework carbon (3DFC). Its comprehensive advantage is directly calcined sodium citrate without adding any additional carbon source, template and catalyst.…”

Section: Introductionmentioning

confidence: 99%

3D graphene/hexagonal boron nitride composite nanomaterials synergistically reduce the friction and wear of Steel‐DLC contacts

Wei

Chen

et al. 2021

Nano Select

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Green tribology is an engineering field, which is dedicated to reducing friction, wear and pollution to the environment. Diamond‐like carbon (DLC) films as coating is a very effective green friction material, but its friction of coefficient in the atmospheric environment still needs to be further reduced. Here, a common method for improving the tribological performance of DLC films in ambient atmosphere by adding 3D graphene/hexagonal boron nitride(h‐BN) composite nanomaterials as lubricant additive is proposed. By comparing with DLC film and other single additives, we can see that the 3D graphene/h‐BN composite nanomaterial as a lubricating additive reduce the friction coefficient and wear rate remarkably. By studying the tribological properties of the surface of the steel ball and DLC film, it is found that the friction protective film containing carbon, nitrogen and boron elements are formed on the surface. The presence of the friction layer can reduce friction efficiently, not only prevent the surface of the steel ball from being excessively worn, but also protect the DLC film from being damaged. The important thing is that it does not contain harmful elements and provides a new reference for the development of the next generation of oil‐free lubrication tribology. Accordingly, it is considered an environmentally friendly additive.

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Superlubricity of Fullerene Derivatives Induced by Host–Guest Assembly

Cited by 31 publications

References 46 publications

Insight Into the Superlubricity and Self-Assembly of Liquid Crystals

Insight Into the Superlubricity and Self-Assembly of Liquid Crystals

Applications of carbon quantum dots in lubricant additives: a review

3D graphene/hexagonal boron nitride composite nanomaterials synergistically reduce the friction and wear of Steel‐DLC contacts

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