Vibrational Dynamics of Water within Mesoporous Materials at Different Hydration Levels during Adsorption and Desorption Processes

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	Vibrational Dynamics of Water within Mesoporous Materials at Different Hydration Levels during Adsorption and Desorption Processes
	Huang, XF ; Wang, Q ; Liu, XX ; Yang, SH ; Li, CX ; Sun, G ; Pan, LQ ; Lu, KQ
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2009
卷号	113 期号:43 页码:18768
关键词	DENSITY-FUNCTIONAL THEORY NANOCONFINED WATER LIQUID WATER SILICA SPECTROSCOPY CONFINEMENT HYSTERESIS PORES SIZE NMR
ISSN号	1932-7447
通讯作者	Wang, Q (reprint author), Chinese Acad Sci, Inst Phys, Lab Soft Matter Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	The vibrational dynamics of water within Vycor 7930 under different hydration levels and adsorption and desorption processes has been investigated by Raman measurements. Based on the successfully depressing the background fluorescence of Vycor, a new Gaussian peaking at 3590 cm(-1) has been observed in the Raman spectrum of confined water. By comparison with the published Raman data of water within fully filled silica-based pores or reverse micelles, it is. confirmed that a small confinement size may conceal the characteristic effect of hydrophilic interface. In addition, a density hysteresis observed within a filling fraction (phi) range of 0.25 < phi < 0.5 indicates that the cavitation model should be previously considered to explain the adsorption hysteresis of the water/Vycor system.
收录类别	SCI
资助信息	NSFC [10874208, 50672008]; National Basic Research Program of China [2004CB619005]; Chinese Academy of Sciences [KJCX2-YW-M07]
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/46527]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Huang, XF,Wang, Q,Liu, XX,et al. Vibrational Dynamics of Water within Mesoporous Materials at Different Hydration Levels during Adsorption and Desorption Processes[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(43):18768.
APA	Huang, XF.,Wang, Q.,Liu, XX.,Yang, SH.,Li, CX.,...&Lu, KQ.(2009).Vibrational Dynamics of Water within Mesoporous Materials at Different Hydration Levels during Adsorption and Desorption Processes.JOURNAL OF PHYSICAL CHEMISTRY C,113(43),18768.
MLA	Huang, XF,et al."Vibrational Dynamics of Water within Mesoporous Materials at Different Hydration Levels during Adsorption and Desorption Processes".JOURNAL OF PHYSICAL CHEMISTRY C 113.43(2009):18768.