Double hollow MoS2 nano-spheres: Synthesis, tribological properties, and functional conversion from lubrication to photocatalysis

被引：61
作者：
Liu, Yueru [1 ]
Hu, Kunhong [1 ]
Hu, Enzhu [1 ]
Guo, Jianhua [1 ]
Han, Chengliang [1 ]
Hu, Xianguo [2 ]
机构：
[1] Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Peoples R China
[2] Hefei Univ Technol, Inst Tribol, Hefei 230009, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2017年 / 392卷
基金：
中国国家自然科学基金;
关键词：
Molybdenum disulfide; Solid lubricant additives; Photocatalysis; Nanoparticles; Double hollow nanostructure; IF-MOS2; NANOPARTICLES; MOLYBDENUM-DISULFIDE; BOUNDARY LUBRICATION; FRICTION; BEHAVIOR; WEAR; NANOCOMPOSITES; PERFORMANCE; POLYMER; POWDERS;
D O I：
10.1016/j.apsusc.2016.09.132
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Molybdenum disulfide (MoS2) has extensive applications in industries as solid lubricants and catalysts. To improve the lubricating performance of MoS2, novel double-hollow-sphere MoS2 (DHSM) nanopartides with an average diameter of approximately 90 nm were synthesized on sericite mica (SM). When the DHSM/SM composite was used as an additive in polyalphaolefin oil, friction and wear decreased by 22.4% and 63.5% respectively. The low friction and wear were attributed to the easy exfoliation of DHSM. The DHSM/SM composite was then rubbed under 40 MPa for 1 h to investigate the exfoliation and functional conversion behaviors of DHSM. Results showed that DHSM (lubricating structure) on SM could be completely exfoliated into nanosheets (catalytic structure) by rubbing. The nanosheets exfoliated from DHSM presented good photocatalytic activity for the removal of organic compounds from waste water. This work provided both a novel solid lubricant for industrial applications and a possible approach to designing a novel green lubricant for use as a photocatalyst in organic-waste treatment after lubricating service life. (C) 2016 Elsevier B.V. All rights reserved.
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收藏
页码：1144 / 1152
页数：9
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