Physiochemical Characterization of Iodine (V) Oxide Part II: Morphology and Crystal Structure of Particulate Films
| Autor: | Samuel B. Emery, C M Lindsay, Brian Little |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Absorption spectroscopy
hydrogen iodate General Chemical Engineering iodic acid Inorganic chemistry Oxide Iodine oxide Iodic acid I2O5 triperiodic acid film drop casting Inorganic Chemistry Crystal chemistry.chemical_compound spin coating HI3O8 iodine (V) oxide lcsh:QD901-999 General Materials Science Iodine pentoxide Spin coating HIO3 Drop (liquid) Condensed Matter Physics HIO3-I2O5 chemistry Chemical engineering iodine pentoxide lcsh:Crystallography |
| Zdroj: | Crystals, Vol 5, Iss 4, Pp 534-550 (2015) Crystals Volume 5 Issue 4 Pages 534-550 |
| ISSN: | 2073-4352 |
| Popis: | In this study, the production of particulate films of iodine (V) oxides is investigated. The influence that sonication and solvation of suspended particles in various alcohol/ketone/ester solvents have on the physical structure of spin or drop cast films is examined in detail with electron microscopy, powder x-ray diffraction, and UV-visible absorption spectroscopy. Results indicate that sonicating iodine oxides in alcohol mixtures containing trace amounts of water decreases deposited particle sizes and produces a more uniform film morphology. UV-visible spectra of the pre-cast suspensions reveal that for some solvents, the iodine oxide oxidizes the solvent, producing I2 and lowering the pH of the suspension. Characterizing the crystals within the cast films reveal their composition to be primarily HI3O8, their orientations to exhibit a preferential orientation, and their growth to be primarily along the ac-plane of the crystal, enhanced at higher spin rates. Spin-coating at lower spin rates produces laminate-like particulate films versus higher density, one-piece films of stacked particles produced by drop casting. The particle morphology in these films consists of a combination of rods, plates, cubes, and rhombohedra structure. |
| Databáze: | OpenAIRE |
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