期刊
CHEMICAL ENGINEERING JOURNAL
卷 431, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.133482
关键词
Fluorinated boron nitride nanosheets; Lubricant additive; Tribological properties; Lubricating mechanisms
资金
- National Natural Science Foundation of China [52075458]
- Sichuan Science and Technology Program [2021JDRC0094]
- Fundamental Research Founds for the Central Unversities and Analytical and Testing Center of Southwest Jiaotong University
Fluorinated boron nitride nanosheets (F-BNNSs) with different fluorine contents were successfully prepared via solvothermal method, showing superior tribological performance. The F-BNNSs with the highest fluorine content exhibited the best friction coefficient and wear rate, attributed to their special composition, physicochemical properties, nanostructure, and interface behaviors.
Although fluorinated boron nitride nanosheets (F-BNNSs) have been proved possessing superior lubricating properties via density-functional theory, the effect of fluorine (F) content on the tribological behaviors has not been studied in experiment so far. Because it is still a challenge to obtain F-BNNSs with different F content through the controllable preparation method. Here, F-BNNSs were successfully prepared via solvothermal method, using a nontoxic and noncorrosive solid acid as F source for fluorination of hexagonal boron nitride nanosheets (h-BNNSs). It is of great significance to achieve the tunability of F content in the range from 4.09% to 14.6% by controlling dosage of fluorinating agent and fluorinating time. F-BNNSs(2.0-24) with the highest F content possess the best tribological performance: the average friction coefficient and wear rate can decrease by 32.3% and over 91%, respectively. The outstanding tribological properties are attributed to their special composition, physicochemical properties, nanostructure and interface behaviors, which promotes the formation of self-lubricating structure and dense protective tribo-films. F-BNNSs show promising potentials as a substitute of traditional h-BNNSs in industrial application. Prospectively, this method can also be applied in fluorination of other two-dimensional materials to improve the tribological behaviors, considering its advantages of conveniency, controllability and environmental friendliness.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据