Macroscale Superlubricity of Black Phosphorus Quantum Dots
In the present work, Black Phosphorus Quantum Dots (BPQDs) were synthesized via sonication-assisted liquid-phase exfoliation. The average size of the BPQDs was 3.3 ± 0.85 nm. The BPQDs exhibited excellent dispersion stability in ultrapure water. Macroscale superlubricity was realized with the unmodi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/10/7/158 |
| _version_ | 1797405849516244992 |
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| author | Penghui Gong Yishen Qu Wei Wang Fanfan Lv Jie Jin |
| author_facet | Penghui Gong Yishen Qu Wei Wang Fanfan Lv Jie Jin |
| author_sort | Penghui Gong |
| collection | DOAJ |
| description | In the present work, Black Phosphorus Quantum Dots (BPQDs) were synthesized via sonication-assisted liquid-phase exfoliation. The average size of the BPQDs was 3.3 ± 0.85 nm. The BPQDs exhibited excellent dispersion stability in ultrapure water. Macroscale superlubricity was realized with the unmodified BPQDs on rough Si<sub>3</sub>N<sub>4</sub>/SiO<sub>2</sub> interfaces. A minimum coefficient of friction (COF) of 0.0022 was achieved at the concentration of 0.015 wt%. In addition, the glycerol was introduced to promote the stability of the superlubricity state. The COF of the BPQDs-Glycerol aqueous solution (BG<sub>aq</sub>) was 83.75% lower than that of the Glycerol aqueous solution (G<sub>aq</sub>). Based on the above analysis, the lubrication model was presented. The hydrogen-bonded network and silica gel layer were formed on the friction interface, which played a major role in the realization of macroscale superlubricity. In addition, the adsorption water layer could also prevent the worn surfaces from making contact with each other. Moreover, the synergistic effect between BPQDs and glycerol could significantly decrease the COF and maintain the superlubricity state. The findings theoretically support the realization of macroscale superlubricity with unmodified BPQDs as a water-based lubrication additive. |
| first_indexed | 2024-03-09T03:16:10Z |
| format | Article |
| id | doaj.art-a3aba4ff66f544b6ab7ff6109ecb3163 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-09T03:16:10Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-a3aba4ff66f544b6ab7ff6109ecb31632023-12-03T15:19:22ZengMDPI AGLubricants2075-44422022-07-0110715810.3390/lubricants10070158Macroscale Superlubricity of Black Phosphorus Quantum DotsPenghui Gong0Yishen Qu1Wei Wang2Fanfan Lv3Jie Jin4School of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Economics and Management, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Mechanical and Electrical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Metallurgy Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, ChinaIn the present work, Black Phosphorus Quantum Dots (BPQDs) were synthesized via sonication-assisted liquid-phase exfoliation. The average size of the BPQDs was 3.3 ± 0.85 nm. The BPQDs exhibited excellent dispersion stability in ultrapure water. Macroscale superlubricity was realized with the unmodified BPQDs on rough Si<sub>3</sub>N<sub>4</sub>/SiO<sub>2</sub> interfaces. A minimum coefficient of friction (COF) of 0.0022 was achieved at the concentration of 0.015 wt%. In addition, the glycerol was introduced to promote the stability of the superlubricity state. The COF of the BPQDs-Glycerol aqueous solution (BG<sub>aq</sub>) was 83.75% lower than that of the Glycerol aqueous solution (G<sub>aq</sub>). Based on the above analysis, the lubrication model was presented. The hydrogen-bonded network and silica gel layer were formed on the friction interface, which played a major role in the realization of macroscale superlubricity. In addition, the adsorption water layer could also prevent the worn surfaces from making contact with each other. Moreover, the synergistic effect between BPQDs and glycerol could significantly decrease the COF and maintain the superlubricity state. The findings theoretically support the realization of macroscale superlubricity with unmodified BPQDs as a water-based lubrication additive.https://www.mdpi.com/2075-4442/10/7/158macroscale superlubricityBlack Phosphorus Quantum Dotslubricationglycerolfriction |
| spellingShingle | Penghui Gong Yishen Qu Wei Wang Fanfan Lv Jie Jin Macroscale Superlubricity of Black Phosphorus Quantum Dots Lubricants macroscale superlubricity Black Phosphorus Quantum Dots lubrication glycerol friction |
| title | Macroscale Superlubricity of Black Phosphorus Quantum Dots |
| title_full | Macroscale Superlubricity of Black Phosphorus Quantum Dots |
| title_fullStr | Macroscale Superlubricity of Black Phosphorus Quantum Dots |
| title_full_unstemmed | Macroscale Superlubricity of Black Phosphorus Quantum Dots |
| title_short | Macroscale Superlubricity of Black Phosphorus Quantum Dots |
| title_sort | macroscale superlubricity of black phosphorus quantum dots |
| topic | macroscale superlubricity Black Phosphorus Quantum Dots lubrication glycerol friction |
| url | https://www.mdpi.com/2075-4442/10/7/158 |
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