Hexagonalization of Aluminogermanate Imogolite Nanotubes Organized into Closed-Packed Bundles

被引：33

作者：

Amara, Mohamed Salah ^{[1
,2
]}

Rouziere, Stephan ^{[1
]}

Paineau, Erwan ^{[1
,2
]}

Bacia-Verloop, Maria ^{[3
]}

Thill, Antoine ^{[2
]}

Launois, Pascale ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, UMR 8502, Lab Phys Solides, F-91405 Orsay, France

[2] CEA Saclay, CNRS, UMR 3299, Lab Interdisciplinaire Org Nanometr & Supramol, F-91191 Gif Sur Yvette, France

[3] CNRS, UMR 5075, Inst Biol Struct, F-38027 Grenoble, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 17期

关键词：

WALLED ALUMINOSILICATE NANOTUBES; NUCLEAR-MAGNETIC-RESONANCE; CARBON NANOTUBES; MECHANICAL-PROPERTIES; MOLECULAR-DYNAMICS; ALUMINUM SILICATE; OXIDE NANOTUBES; SINGLE; ADSORPTION; WATER;

D O I：

10.1021/jp5029678

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：

Imogolite nanotubes are promising building blocks for nanotechnologies with potential applications in molecular separation, molecular storage, or catalysis. We present an experimental study of the structure of germanium-based imogolite nanotubes Al2O3Ge(OH)(4) arranged in bundles. It combines cryo-transmission electron microscopy, infrared spectroscopy, thermogravimetric measurements, and X-ray scattering experiments. Thanks to a systematic method developed to analyze X-ray scattering diagrams as a function of the nanotube shape, single-walled germanium-based imogolite nanotubes, known as cylindrical for more than 30 years, are shown to take an hexagonal base shape when arranged in bundles. Physical and chemical properties of hexagonal imogolite nanotubes should markedly differ from those of cylindrical ones, making hexagonal basis nanotubes a "new" member, of particular interest, of the rich family of imogolites.

引用

页码：9299 / 9306

页数：8

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