Tao Wu, Andrew SyBing, Xizheng Wang
Feb 1, 2017
Citations
1
Influential Citations
25
Citations
Journal
Journal of Materials Research
Abstract
High iodine containing oxides are of interest as biocidal components in energetic applications requiring fast exothermic reactions with metallic fuels. Aerosol techniques offer a convenient route and potentially direct route for preparation of small particles with high purity, and are a method proven to be amenable and economical to scale-up. Here, we demonstrate the synthesis of various iodine oxide/iodic acid microparticles by a direct one-step aerosol method from iodic acid. By varying temperature and humidity, we produced near phase pure δ-HIO_3, HI_3O_8, and I_2O_5 as determined by X-ray diffraction. δ-HIO_3, a previously unknown phase, was confirmed in this work. In addition, scanning electron microscopy was used to examine the morphology and size of those prepared iodine oxide/iodic acid particles and the results show that all particles have an irregularly spherical shape. Thermogravimetric/differential scanning calorimetry measurement results show that HIO_3 dehydrates endothermically to HI_3O_8, and then to I_2O. I_2O_5 decomposes to I_2 and O_2.