CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Ultrahigh Density of Gas Molecules Confined in Surface Nanobubbles in Ambient Water
Zhou, LM; Wang, XY; Shin, HJ; Wang, J; Tai, RZ; Zhang, XH; Fang, HP; Xiao, W; Wang, L; Wang, CL; Gao, XY; Hu, J; Zhang, LJ
2020
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume142Issue:12Pages:5583-5593
Subtype期刊论文
AbstractTo understand the unexpected and puzzling longterm stability of nanoscale gas bubbles, it is crucial to probe their nature and intrinsic properties. We report herein synchrotron-based scanning transmission X-ray microscopy (STXM) evidence of highly condensed oxygen gas molecules trapped as surface nanobubbles. Remarkably, the analysis of absorption spectra of a single nanobubble revealed that the oxygen density inside was 1-2 orders of magnitude higher than that in atmospheric pressure, and these bubbles were found in a highly saturated liquid environment with the estimated oxygen concentration to be hundreds of times higher than the known oxygen solubility in equilibrium. Molecular dynamics simulations were performed to investigate the stability of surface nanobubbles on a heterogeneous substrate in gas-oversaturated water. These results indicated that gas molecules within confinement such as the nanobubbles could maintain a dense state instead of the ideal gas state, as long as their surrounding liquid is supersaturated. Our findings should help explain the surprisingly long lifetime of the nanobubbles and shed light on nanoscale gas aggregation behaviors.
KeywordDYNAMICS BUBBLES GROWTH FORCE STATE
DOI10.1021/jacs.9b11303
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33240
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
4.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China
5.POSTECH, Pohang Accelerator Lab, Pohang 37673, South Korea
6.Canadian Light Source Inc, Saskatoon, SK S7N 2V3, Canada
7.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
Recommended Citation
GB/T 7714
Zhou, LM,Wang, XY,Shin, HJ,et al. Ultrahigh Density of Gas Molecules Confined in Surface Nanobubbles in Ambient Water[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2020,142(12):5583-5593.
APA Zhou, LM.,Wang, XY.,Shin, HJ.,Wang, J.,Tai, RZ.,...&Zhang, LJ.(2020).Ultrahigh Density of Gas Molecules Confined in Surface Nanobubbles in Ambient Water.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,142(12),5583-5593.
MLA Zhou, LM,et al."Ultrahigh Density of Gas Molecules Confined in Surface Nanobubbles in Ambient Water".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 142.12(2020):5583-5593.
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