Synthesis and characterization of germanium sulfide aerogels

Initial Assessment of Alternate Metals in Chalcogels

“…(Cd,Zn,Pb)-(S,Se) (Mohanan et al, 2005) Ge-S (Kalebaila et al, 2006) (Mo,W)-M-S (Bag et al, 2009) (Sn,Sb)-M-(S,Se) (Bag and Kanatzidis, 2010) Zn-Sn-S (Oh et al, 2011) Fe-Sn-S (Yuhas et al, 2011b) Fe-M-Sn-S (Yuhas et al, 2011a) Mo-Co-M-S (Polychronopoulou et al, 2012) . Glass formation tendency in Sn-Ge-S chalcogenide glasses (Ruffolo and Boolchand, 1985 …”

“…A new family of non-oxide, chalcogen-based aerogels, called chalcogels, has been reported in the literature (Mohanan et al, 2005;Kalebaila et al, 2006;Bag et al, 2007;Kanatzidis and Bag, 2008;Bag et al, 2009;Bag and Kanatzidis, 2010;Oh et al, 2011;Yuhas et al, 2011b;Yuhas et al, 2011a;ShafaeiFallah et al, 2011;Riley et al, 2011;Polychronopoulou et al, 2012). These chalcogels, because of their potential high affinity for halide gases and their high porosity, were thought to be ideal candidates for removal of 129 I from the process gases at a nuclear fuel reprocessing plant.…”

Development of Nanoporous Aerogel-Based Thermal Insulation Products:'Make in India' Initiative

“…Aerogel is technically defined as 'an open-celled, mesoporous, solid foam that is composed of a network of interconnected nanostructures and that exhibits a porosity of not less than 50%'. Other than the most popular silica aerogels, these can be made from various chemical compounds like organic polymers 2 , biological polymers 3 , most of the transition metal oxides [4][5][6][7][8] , semiconductor nanostructures 9,10 , carbon 11 , carbon nanotubes 12 , graphene 13,14 , gold 15 , etc. Silica aerogels are the most studied, explored in several applications and successfully commercialized.…”

Initial Assessment of the Consolidation of Chalcogels into a Viable Waste Form

“…A new family of non-oxide, chalcogen-based aerogels, called chalcogels, has been reported in the literature (Mohanan et al, 2005;Kalebaila et al, 2006;Bag et al, 2007;Kanatzidis and Bag, 2008;Bag et al, 2009;Bag and Kanatzidis, 2010;Oh et al, 2011;Yuhas et al, 2011b;Yuhas et al, 2011a;ShafaeiFallah et al, 2011;Riley et al, 2011;Polychronopoulou et al, 2012). These are highly porous semisolids made from a variety of S-, Se-, and/or Te-based building blocks that have selective affinity for various heavy metals and gases (Bag et al, 2007;Bag et al, 2009;Bag and Kanatzidis, 2010).…”