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In situ measurement of contact angles and surface tensions of interfacial nanobubbles in ethanol aqueous solutions
Zhao, BY; Wang, XY; Wang, S; Tai, RZ; Zhang, LJ; Hu, J; Hu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.; Hu, J (reprint author), Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China.; Zhang, LJ (reprint author), Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China.
2016
Source PublicationSOFT MATTER
ISSN1744-683X
Volume12Issue:14Pages:3303—3309
Subtype期刊文献
AbstractThe astonishing long lifetime and large contact angles of interfacial nanobubbles are still in hot debate despite numerous experimental and theoretical studies. One hypothesis to reconcile the two abnormalities of interfacial nanobubbles is that they have low surface tensions. However, few studies have been reported to measure the surface tensions of nanobubbles due to the lack of effective measurements. Herein, we investigate the in situ contact angles and surface tensions of individual interfacial nanobubbles immersed in different ethanol aqueous solutions using quantitative nanomechanical atomic force microscopy (AFM). The results showed that the contact angles of nanobubbles in the studied ethanol solutions were also much larger than the corresponding macroscopic counterparts on the same substrate, and they decreased with increasing ethanol concentrations. More significantly, the surface tensions calculated were much lower than those of the gas-liquid interfaces of the solutions at the macroscopic scale but have similar tendencies with increasing ethanol concentrations. Those results are expected to be helpful in further understanding the stability of interfacial nanobubbles in complex solutions.
KeywordAtomic-force Microscopy Hydrophobic Surfaces Nano-bubbles Water Stability Attraction Droplets Lifetime Growth
DOI10.1039/c5sm02871j
Indexed BySCI
Language英语
WOS IDWOS:000373480200002
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25752
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorZhang, LJ; Hu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.; Hu, J (reprint author), Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China.; Zhang, LJ (reprint author), Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China.
Recommended Citation
GB/T 7714
Zhao, BY,Wang, XY,Wang, S,et al. In situ measurement of contact angles and surface tensions of interfacial nanobubbles in ethanol aqueous solutions[J]. SOFT MATTER,2016,12(14):3303—3309.
APA Zhao, BY.,Wang, XY.,Wang, S.,Tai, RZ.,Zhang, LJ.,...&Zhang, LJ .(2016).In situ measurement of contact angles and surface tensions of interfacial nanobubbles in ethanol aqueous solutions.SOFT MATTER,12(14),3303—3309.
MLA Zhao, BY,et al."In situ measurement of contact angles and surface tensions of interfacial nanobubbles in ethanol aqueous solutions".SOFT MATTER 12.14(2016):3303—3309.
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