Significant Hydration Shell Formation Instead of Hydrogen Bonds in Nanoconfined Aqueous Electrolyte Solutions

被引：28

作者：

Ohba, Tomonori ^{[1
]}

Hata, Kenji ^{[2
]}

Kanoh, Hirofumi ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Sci, Inage Ku, Chiba 2638522, Japan

[2] Natl Inst Adv Ind Sci & Technol, Nanotube Res Ctr, Tsukuba 3058565, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 43期

关键词：

CARBON NANOTUBES; WATER; ION; CONDUCTION; SIMULATION; ENERGY; NA+; K+;

D O I：

10.1021/ja307338t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoscale confined electrolyte solutions are frequently observed, specifically in electrochemistry and biochemistry. However, the mechanism and structure of such electrolyte solutions are not well understood. We investigated the structure of aqueous electrolyte solutions in the internal nanospaces of single-walled carbon nanotubes, using synchrotron X-ray diffraction. The intermolecular distance between the water molecules in the electrolyte solution was increased because of anomalously strong hydration shell formation. Water correlation was further weakened at second-neighbor or longer distances. The anomalous hydrogen-bonding structure improves our understanding of electrolyte solutions in nanoenvironments.

引用

收藏

页码：17850 / 17853

页数：4

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