Constructing MXene quantum dots decorated covalent organic frameworks as oil-based lubricant additive

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-03-03 DOI:10.1007/s40843-024-3250-x

Yichen Wang (, ), Fei Zhao (, ), Haoyuan Yang (, ), Ke Yang (, ), Tianyi Zhang (, ), Qian Ye (, ), Yibo He (, ), Xuqing Liu (, )

{"title":"Constructing MXene quantum dots decorated covalent organic frameworks as oil-based lubricant additive","authors":"Yichen Wang \n (, ), Fei Zhao \n (, ), Haoyuan Yang \n (, ), Ke Yang \n (, ), Tianyi Zhang \n (, ), Qian Ye \n (, ), Yibo He \n (, ), Xuqing Liu \n (, )","doi":"10.1007/s40843-024-3250-x","DOIUrl":null,"url":null,"abstract":"<div><p>Nanoadditives offer a promising way to reduce friction and wear. In this study, an organic–inorganic hybrid material composed of MXene quantum dots (MQDs) and cetyl trimethylammonium bromide decorated covalent organic frameworks (CNUS-2) is successfully constructed via an electrostatic self-assembly strategy. The combination of MQDs and CNUS-2 not only increases the interlayer spacing of NUS-2 but also mitigates the self-aggregation of MQDs, maximizing the advantages of their intrinsic characteristics. Owing to the synergistic lubrication effect of zero-dimensional MQDs and two-dimensional NUS-2, improved lubricity and interfacial bonding ability are realized. In addition, the relative slip between the CNUS-2@MQDs sheets can reduce friction and anti-wear. As expected, different levels of CNUS-2@MQDs effectively boost the tribological properties. The friction coefficient (0.097) and wear volume (1.48×10<sup>5</sup> µm<sup>3</sup>) of PAO-10 oil are reduced by 46.7% and 92.6% respectively, after the introduction of the 3.0 wt% CNUS-2@MQDs nanocomposite. Furthermore, the abundant oxygen-containing functional groups in CNUS-2 can accelerate the formation of adsorption and tribochemical reaction films, whereas the MQDs can repair worn surfaces, resulting in superior lubrication performance under variable load, temperature, and frequency conditions. This work not only effectively improves lubrication performance by developing a unique CNUS-2@MQDs nanocomposite, but also provides a reference for the design of novel lubricant additives.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1220 - 1229"},"PeriodicalIF":6.8000,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science China Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s40843-024-3250-x","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Nanoadditives offer a promising way to reduce friction and wear. In this study, an organic–inorganic hybrid material composed of MXene quantum dots (MQDs) and cetyl trimethylammonium bromide decorated covalent organic frameworks (CNUS-2) is successfully constructed via an electrostatic self-assembly strategy. The combination of MQDs and CNUS-2 not only increases the interlayer spacing of NUS-2 but also mitigates the self-aggregation of MQDs, maximizing the advantages of their intrinsic characteristics. Owing to the synergistic lubrication effect of zero-dimensional MQDs and two-dimensional NUS-2, improved lubricity and interfacial bonding ability are realized. In addition, the relative slip between the CNUS-2@MQDs sheets can reduce friction and anti-wear. As expected, different levels of CNUS-2@MQDs effectively boost the tribological properties. The friction coefficient (0.097) and wear volume (1.48×10⁵ µm³) of PAO-10 oil are reduced by 46.7% and 92.6% respectively, after the introduction of the 3.0 wt% CNUS-2@MQDs nanocomposite. Furthermore, the abundant oxygen-containing functional groups in CNUS-2 can accelerate the formation of adsorption and tribochemical reaction films, whereas the MQDs can repair worn surfaces, resulting in superior lubrication performance under variable load, temperature, and frequency conditions. This work not only effectively improves lubrication performance by developing a unique CNUS-2@MQDs nanocomposite, but also provides a reference for the design of novel lubricant additives.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.