Double hollow MoS2 nano-spheres: Synthesis, tribological properties, and functional conversion from lubrication to photocatalysis
| Autor: | Kunhong Hu, Cheng-Liang Han, Xianguo Hu, Liu Yueru, Guo Jianhua, Enzhu Hu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Composite number General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry Tribology 021001 nanoscience & nanotechnology Condensed Matter Physics Exfoliation joint Surfaces Coatings and Films chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Lubrication Photocatalysis Composite material Lubricant 0210 nano-technology Molybdenum disulfide Dry lubricant |
| Zdroj: | Applied Surface Science. 392:1144-1152 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2016.09.132 |
| Popis: | Molybdenum disulfide (MoS 2 ) has extensive applications in industries as solid lubricants and catalysts. To improve the lubricating performance of MoS 2 , novel double-hollow-sphere MoS 2 (DHSM) nanoparticles 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. |
| Databáze: | OpenAIRE |
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