Tin sulfide (Sn 2 S 3 ) chalcogels are one of the most effective nonoxide aerogels evaluated to date for iodine gas capture. This is attributed to the fact that the Sn within the gel network has a strong affinity for chemisorption of iodine to form SnI 4 . This study demonstrates an approach for consolidating the raw and iodine-sorbed Sn 2 S 3 chalcogels into a chalcogenide glass using GeS 2 as a glass-forming additive. Adding GeS 2 to iodine-sorbed or iodine-free Sn 2 S 3 chalcogels provides better glass formation than Sn-S or Sn-S-I alone, and the quantity of iodine measured in the bulk glass of the consolidated iodine-sorbed Sn 2 S 3 chalcogel was at ∼45 mass%. Additional experiments were conducted using microwave sintering and hot isostatic pressing with iodine-sorbed Sn 2 S 3 xerogels to evaluate alternative consolidation techniques.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering