Hillier, Stephen
- Department of Soil and Environment, Swedish University of Agricultural Sciences
- The James Hutton Institute
Abstract
Halloysite nanotubes (often abbreviated as HNTs) are technologically important owing to their unique structural and morphological features. Some of these features pre-exist in the naturally hydrated halloysite-(10 Å) parent clay mineral; others may develop during its dehydration towards halloysite-(7 Å). This is the first infrared spectroscopic study of the transition to halloysite-(7 Å), which, in combination with X-ray diffraction (XRD), aimed at advancing the structural description of the process. Three cylindrical and two polygonal halloysite-(10 Å) samples, in both their H- and D-forms, were measured by attenuated total reflectance (ATR), non-invasively and in situ, following step-wise equilibration from 70% relative humidity (RH) to
Keywords
10 Å to 7 Å transition; FT-IR spectroscopy; hydrogen/deuterium (H/D) exchange; halloysite nanotubes; HNTs; X-ray diffraction
Published in
Clays and Clay Minerals
2024, volume: 72, article number: e33
Publisher: CAMBRIDGE UNIV PRESS
SLU Authors
UKÄ Subject classification
Soil Science
Physical Chemistry
Publication identifier
- DOI: https://doi.org/10.1017/cmn.2024.37
Permanent link to this page (URI)
https://res.slu.se/id/publ/140001