Multifunctional carbon dots: Versatile and high-efficiency additives for polyethylene glycol

IF 11.6 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon Pub Date : 2025-09-07 DOI:10.1016/j.carbon.2025.120796

Weiwei Tang , Hao Lei , Yi Wang , Haidong Liu , Xian Wei , Wei Gao , Zhe Zhang , Zhiqiang Jiang , Yufeng Li

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Abstract

Recently, eco-friendly polyethylene glycol (PEG)-based lubricants have received extensive attention in lubrication as energy and environmental crises are aggravating increasingly. Unfortunately, the inherent defects, including relatively weak lubricating performance and single function, significantly limited their development. In this case, a multi-function integrated carbon dots-based lubricant additive (MF-CDs) with good anti-corrosion, anti-oxidation, friction-reducing, anti-wear, and load-supporting functions was creatively synthesized by a one-step pyrolysis method. As a fire-new lubricant additive, the multi-functional MF-CDs can endow the PEG200 lubricant with superior anti-corrosion and anti-oxidation performances effectively. Additionally, when the suitable concentrations of MF-CDs were introduced into the PEG200 lubricant, its friction-reducing, anti-wear, and load-supporting performances can be superlatively increased by 46.6 %, 66.3 %, and 100.0 %, respectively, exhibiting great application prospects. Experimental results illustrated that the excellent tribological performances of MF-CDs are attributed to their terrific film-forming capacity and nanostructure-lubricated phenomenon. To sum up, MF-CDs as additives could systematically improve the multifarious performances of PEG-based lubricants, significantly expanding their applied range. Therefore, the corresponding research of this work is expected to reduce the types of lubricant additives and then decrease the lubrication cost of mechanical equipment markedly.

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多功能碳点：聚乙二醇的多功能高效添加剂

近年来，随着能源和环境危机的日益加剧，聚乙二醇（PEG）基环保型润滑油在润滑领域受到了广泛关注。但其固有的润滑性能较弱、功能单一等缺陷极大地限制了其发展。在这种情况下，创造性地通过一步热解法合成了一种具有良好的防腐、抗氧化、减摩、抗磨和承载功能的多功能集成碳点基润滑油添加剂（MF-CDs）。多功能MF-CDs作为一种全新的润滑油添加剂，可以有效地赋予PEG200润滑油优异的抗腐蚀和抗氧化性能。在PEG200润滑油中加入适当浓度的MF-CDs后，其减摩性能、抗磨性能和承载性能分别提高46.6%、66.3%和100.0%，具有良好的应用前景。实验结果表明，优异的摩擦学性能归功于优异的成膜能力和纳米结构润滑现象。综上所述，MF-CDs作为添加剂可以系统地改善peg基润滑油的各项性能，显著扩大其应用范围。因此，本工作的相应研究有望减少润滑油添加剂的种类，从而显著降低机械设备的润滑成本。

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.