Ultrahigh Density of Gas Molecules Confined in Surface Nanobubbles in Ambient Water

doi:10.1021/jacs.9b11303

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017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
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2020
卷号	142 期号:12 页码:5583-5593
关键词	DYNAMICS BUBBLES GROWTH FORCE STATE
ISSN号	0002-7863
DOI	10.1021/jacs.9b11303
文献子类	期刊论文
英文摘要	To 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.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/33240]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China 2.POSTECH, Pohang Accelerator Lab, Pohang 37673, South Korea 3.Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 6.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada 7.Canadian Light Source Inc, Saskatoon, SK S7N 2V3, Canada
推荐引用方式 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.