Synergistic lubrication effect of graphene oxide and MoS2 nanoparticles in water-based fluid: Experiment and humid-environmental MD simulation study

doi:10.1016/j.colsurfa.2024.135900

CSpace

	Synergistic lubrication effect of graphene oxide and MoS2 nanoparticles in water-based fluid: Experiment and humid-environmental MD simulation study
	He, Jiaqi 1; Xiong, Sang 2; Li, Huijian 3
	2025-02-20
发表期刊	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN	0927-7757
卷号	707
摘要	In this study, a lubricant was synthesized using water-based hybrid nanofluid containing graphene oxide (GO) and MoS2 nanoparticles. Pin-on-disk tribology tests and molecular dynamics (MD) simulations under humid environment were conducted. It was discovered that the GO-MoS2 hybrid nanofluid, at the optimal concentration combination (0.3 wt% GO + 0.1 wt% MoS2), demonstrated a notably enhanced synergistic lubrication effect, resulting in a reduction of approximately 14.6 % in the average friction coefficient and 14.4 % in the wear rate when compared to the single nanofluid. Through interfacial tribochemical analysis, a protective polycrystalline tribofilm in the thickness of about 18.6 nm was formed on metal surface, consisting of ultra-fine GO, MoS2 crystals and amorphous substances derived from the organic matters of nanofluids. Besides, from humidenvironmental MD simulation results, there were lower friction force, normal force and peak temperature values in MD model containing both GO and MoS2 nanosheets, meanwhile the lattice mismatch between different nanosheets led to high interlamellar repulsion, further mitigating the pressure and friction. By analyzing the absorption behavior of dispersant molecules, sodium dodecylbenzene sulfonate and triethanolamine molecules partially transferred from nanosheets to Fe surface. Based on the experiment and humid environmental MD simulation results, the excellent tribological behavior of nanofluid was attributed to the polishing, mending, interlayer sliding effect of nanoparticles and the tribofilm induced by interfacial tribochemistry.
关键词	Nanofluid Tribology behavior Lubrication Molecular dynamics Interfacial tribochemistry
其他关键词	TRIBOLOGICAL PROPERTIES ; OIL ; BEHAVIOR
DOI	10.1016/j.colsurfa.2024.135900
收录类别	SCIE
语种	英语
资助项目	Natural Science Foundation of Jiangsu Province [BK20231355]; Major project of Basic Science (Natural science) Research in Colleges and Universities of Jiangsu Province [23KJA430009]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:001373570100001
出版者	ELSEVIER
原始文献类型	Article
EISSN	1873-4359
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/174275
专题	国家开放大学
通讯作者	He, Jiaqi
作者单位	1.Open Univ China, Beijing 100039, Peoples R China; 2.Nanjing Inst Technol, Coll Mat Sci & Engn, Nanjing 211167, Peoples R China; 3.Shandong Hi Speed Energy Dev Co Ltd, Jinan 250014, Peoples R China
推荐引用方式 GB/T 7714	He, Jiaqi,Xiong, Sang,Li, Huijian. Synergistic lubrication effect of graphene oxide and MoS2 nanoparticles in water-based fluid: Experiment and humid-environmental MD simulation study[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2025,707.
APA	He, Jiaqi,Xiong, Sang,&Li, Huijian.(2025).Synergistic lubrication effect of graphene oxide and MoS2 nanoparticles in water-based fluid: Experiment and humid-environmental MD simulation study.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,707.
MLA	He, Jiaqi,et al."Synergistic lubrication effect of graphene oxide and MoS2 nanoparticles in water-based fluid: Experiment and humid-environmental MD simulation study".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 707(2025).