Dynamic properties of nano-confined water in an ionic liquid

被引：16

作者：

Abe, Hiroshi ^{[1
]}

Yamada, Takeshi ^{[2
]}

Shibata, Kaoru ^{[3
]}

机构：

[1] Natl Def Acad, Dept Mat Sci & Engn, Yokosuka, Kanagawa 2398686, Japan

[2] CROSS, Neutron Sci & Technol Ctr, Naka, Ibaraki 3191116, Japan

[3] J PARC Ctr, Neutron Sci Sect, Tokai, Ibaraki 3191116, Japan

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2018年 / 264卷

关键词：

ELASTIC NEUTRON-SCATTERING; NANOSTRUCTURAL ORGANIZATION; PHASE-TRANSITION; MOLECULES;

D O I：

10.1016/j.molliq.2018.05.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nano-confined water (a water pocket) was spontaneously formed using an ionic liquid (IL), 1-butyl-3-methylimidazolium nitrate ([C(4)mim][NO3]), in [C(4)mim][NO3]-H2O and [C(4)mim][NO3]-D2O mixtures. The static average size of the water pocket in [C(4)mim][NO3]-80 mol% D2O has been estimated to be around 20 angstrom, determined via small-angle neutron scattering measurements (Abe et al., J. Phys. Chem. Lett., 2014, 5, 1175). In this study, the dynamics of the water pocket in the IL were directly examined using incoherent quasielastic neutron scattering. Using the H-D difference of a neutron incoherent scattering cross section, the extent of the diffusion of the water molecules in the water pocket was determined. The water pocket could be characterized due to the slow dynamics of the water compared with those of bulk water. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：54 / 57

页数：4

共 31 条

[1]

Abe H., 2015, JPS C P, V8

[2] Anomalous Freezing of Nano-Confined Water in Room-Temperature Ionic Liquid 1-Butyl-3-Methylimidazolium Nitrate [J].

Abe, Hiroshi ;

Takekiyo, Takahiro ;

Yoshimura, Yukihiro ;

Saihara, Koji ;

Shimizu, Akio .

CHEMPHYSCHEM, 2016, 17 (08) :1136-1142

[3] Polymorphs in room-temperature ionic liquids: Hierarchical structure, confined water and pressure-induced frustration [J].

Abe, Hiroshi ;

Takekiyo, Takahiro ;

Aono, Masami ;

Kishimura, Hiroaki ;

Yoshimura, Yukihiro ;

Hamaya, Nozomu .

JOURNAL OF MOLECULAR LIQUIDS, 2015, 210 :200-214

[4] Direct Evidence of Confined Water in Room-Temperature Ionic Liquids by Complementary Use of Small-Angle X-ray and Neutron Scattering [J].

Abe, Hiroshi ;

Takekiyo, Takahiro ;

Shigemi, Machiko ;

Yoshimura, Yukihiro ;

Tsuge, Shu ;

Hanasaki, Tomonori ;

Ohishi, Kazuki ;

Takata, Shinichi ;

Suzuki, Jun-ichi .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (07) :1175-1180

[5]

Agrawal KV, 2017, NAT NANOTECHNOL, V12, P267, DOI [10.1038/nnano.2016.254, 10.1038/NNANO.2016.254]

[6] Neutron scattering observation of quasi-free rotations of water confined in carbon nanotubes [J].

Briganti, G. ;

Rogati, G. ;

Parmentier, A. ;

Maccarini, M. ;

De Luca, F. .

SCIENTIFIC REPORTS, 2017, 7

[7] Water nanodroplets confined in zeolite pores [J].

Coudert, Francois-Xavier ;

Cailliez, Fabien ;

Vuilleumier, Rodolphe ;

Fuchs, Alain H. ;

Boutin, Anne .

FARADAY DISCUSSIONS, 2009, 141 :377-398

[8] Dynamics of nanoconfined water under pressure [J].

Diallo, S. O. ;

Jazdzewska, M. ;

Palmer, J. C. ;

Mamontov, E. ;

Gubbins, K. E. ;

Sliwinska-Bartkowiak, M. .

PHYSICAL REVIEW E, 2013, 88 (02)

[9] Dynamics of nano-confined water in Portland cement - comparison with synthetic C-S-H gel and other silicate materials [J].

Goracci, Guido ;

Monasterio, Manuel ;

Jansson, Helen ;

Cerveny, Silvina .

SCIENTIFIC REPORTS, 2017, 7

[10]

Jiang W, 2007, J PHYS CHEM B, V111, P4812, DOI 10.1021/jp0671421

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