Document Type
Article
Publication Date
4-6-2004
Journal or Book Title
Chemistry of Materials
Volume
16
Issue
7
First Page
126
Last Page
1231
DOI
10.1021/cm034990+
Abstract
In the present work, the (x)H2S + (1−x)GeS2 system has been systematically investigated to determine the incorporation of hydrogen into the tetrahedral germanium sulfide network. Reactions between gaseous H2S and glassy-GeS2 have been explored over a range of temperatures and pressures. Reactions for shorter times and lower temperatures (ambient through 250 °C) produced the protonated thiogermanic acid H4Ge4S10 with an adamantane-like microstructure. In contrast, longer reaction times produced the unprotonated low-temperature three-dimensional α-GeS2 crystal structure. At higher temperatures (750 °C), sublimation reactions produced weakly protonated amorphous materials in the form of spherical particles (100 nm to a few μm). Structural characterizations of the obtained amorphous and crystalline materials have been performed using IR and Raman spectroscopies, thermogravimetric analysis, ac impedance spectroscopy, and SEM. Thermal mass loss measurements and quantitative IR of the S−H stretching region 2500 cm-1 were used to determine the amount of hydrogen incorporated into the GeS2 network.
Copyright Owner
American Chemical Society
Copyright Date
2004
Language
en
File Format
application/pdf
Recommended Citation
Sutherland, Jacob T.; Poling, Steven A.; Belin, Renaud C.; and Martin, Steve W., "Exploration of the Hydrogen Sulfide−Germanium Sulfide System" (2004). Materials Science and Engineering Publications. 62.
https://lib.dr.iastate.edu/mse_pubs/62
Comments
Reprinted with permission from Chemistry of Materials 16 (2004): 1226–1231, doi:10.1021/cm034990+. Copyright 2004 American Chemical Society.