{"title":"Single-atom catalysts as high-efficiency lubricant additives for wear mitigation in alkane environments","authors":"Tianyu Fang, Kaishuo Wang, Qingpeng Guo, Dejian Zhang, Huilai Sun, Yong Wan","doi":"10.1007/s10853-025-11576-0","DOIUrl":null,"url":null,"abstract":"<div><p>In order to extend the life of mechanical parts, the most severe challenge is to minimize surface wear exposed to mechanical shear stress. The tribological tests were conducted under lubrication with tetradecane base oil using Fe and Co-based single-atom catalysts (SACs) as lubricating additives. The results indicate that, under a load of 2 N, using base oil containing 0.05 wt% SACs leads to an average friction coefficient approximately 60% lower and the wear rate by two orders of magnitude as comparing with tetradecane alone. XPS and Raman analysis of the wear scar revealed the in situ formation of a carbon-based tribofilms at the sliding interface during sliding. The research findings hold significant implications and provide valuable references for broadening the application range of metal single-atom catalysts, as well as for further elucidating the tribocatalysis mechanism in liquid alkane environments.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 41","pages":"19997 - 20010"},"PeriodicalIF":3.9000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10853-025-11576-0","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In order to extend the life of mechanical parts, the most severe challenge is to minimize surface wear exposed to mechanical shear stress. The tribological tests were conducted under lubrication with tetradecane base oil using Fe and Co-based single-atom catalysts (SACs) as lubricating additives. The results indicate that, under a load of 2 N, using base oil containing 0.05 wt% SACs leads to an average friction coefficient approximately 60% lower and the wear rate by two orders of magnitude as comparing with tetradecane alone. XPS and Raman analysis of the wear scar revealed the in situ formation of a carbon-based tribofilms at the sliding interface during sliding. The research findings hold significant implications and provide valuable references for broadening the application range of metal single-atom catalysts, as well as for further elucidating the tribocatalysis mechanism in liquid alkane environments.
期刊介绍：
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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