Ice formation on clean and alkali-doped quasi-freestanding graphene: A vibrational investigation

被引：5

作者：

Politano, Antonio

Chiarello, Gennaro ^{[1
]}

机构：

[1] Univ Calabria, Dipartimento Fis, I-87036 Cosenza, Italy

来源：

CARBON | 2015年 / 93卷

关键词：

WATER-MOLECULES; CRYSTAL-GROWTH; METAL IONS; ADSORPTION; SURFACES; SPECTROSCOPY; COADSORPTION; TEMPERATURE; CONFINEMENT; GRAPHITE;

D O I：

10.1016/j.carbon.2015.05.045

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：

High-resolution electron energy loss spectroscopy and low-energy electron diffraction have been used for studying the early steps of water interaction at 100 K with clean and K-doped quasi-freestanding graphene epitaxially grown on Pt(111). Loss measurements indicate the formation of a disordered ice structure and do not support the proposal of a new ice polymorph in this system in published literature. When dosed at 100 K onto a potassiumprecovered graphene sheet, water molecules dissociate giving rise to C-H vibrational bands. (C) 2015 Elsevier Ltd. All rights reserved.

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页码：242 / 249

页数：8

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