研究员 博士生导师 硕士生导师
任职 : 爆炸技术研究所所长
性别: 男
毕业院校: 中国科学技术大学
学位: 博士
所在单位: 力学与航空航天学院
学科: 工程力学
办公地点: 力学楼224室
联系方式: 041184706163 科研之友主页: https://www.scholarmate.com/P/JzE7ru
电子邮箱: robinli@dlut.edu.cn
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论文类型: 期刊论文
发表时间: 2021-07-21
发表刊物: GREEN CHEMISTRY
卷号: 21
期号: 9
页面范围: 2279-2285
ISSN号: 1463-9262
摘要: Mechanical friction and wear account for approximately one third of the present global energy consumption. However, it is still a challenge to prepare an efficient lubricant using a green and facile methodology. Herein, for the first time, we report an in situ green, high-yield and large-scale preparation of carbon dots (CDs)-based lubricants derived from low-cost precursors, including citric acid (CA), urea and poly(ethylene glycol) (PEG), via facile ultrasonic processing. The as-obtained lubricant without any post-treatment possesses a super-low mean friction coefficient of 0.02 and a wear scar diameter (WSD) of 0.55 mm determined using a four-ball tester under 600 N. To the best of our knowledge, the as-prepared lubricant displays the best friction-reducing and antiwear performance to date. The highly efficient lubricating properties of the as-obtained lubricant should be assigned to the CDs in lubricants with surface passivation, a carbon core and small size, providing a rolling effect.