Reversible sorption of water in the crystalline microporous semiconductor K-SBC-1
Journal article, 2010

Microporous semiconducting crystal structures are exceedingly rare and their usefulness for applications typical for microporous semiconductors is largely related to their sorption properties and to their semiconductor response to sorption. The sorption properties of the unique crystalline microporous semiconducting antimony(III) oxide telluride K-SBC-1 were evaluated by means of temperature-resolved diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, thermogravimetric analysis (TGA/DSC), and X-ray powder diffraction. K-SBC-1 was found to demonstrate heat-induced reversible sorption and desorption-induced rearrangements of guest water molecules. Upon heating to 300 degrees C 66% of the water content of K-SBC-1 desorbed. Desorption of water could be made more facile through activation of K-SBC-1 by heat treatment and then occurred at room temperature in a flow of nitrogen. These are unique properties compared to the few known related structures and thus represent a significant advancement in the field of microporous semiconductors. (C) 2010 Elsevier Inc. All rights reserved.

NANOPOROUS SEMICONDUCTORS

X-ray diffraction

Sorption

FRAMEWORK

CETINEITES

Guest-host structures

Microporous semiconductors

CONDUCTANCE

CHALCOGENIDES

IR spectroscopy

Author

Alexander Shulman

Chalmers

Ezio Zanghellini

Chalmers, Applied Physics, Condensed Matter Physics

Anders Palmqvist

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Microporous and Mesoporous Materials

1387-1811 (ISSN)

Vol. 132 1-2 128-131

Subject Categories

Chemical Engineering

DOI

10.1016/j.micromeso.2010.02.009

More information

Latest update

9/10/2018