Polysulfide chalcogels with ion-exchange properties and highly efficient mercury vapor sorption

Youngtak Oh, Collin D. Morris, Mercouri G. Kanatzidis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

97 Scopus citations


We report the synthesis of metal-chalcogenide aerogels from Pt 2+ and polysulfide clusters ([S x] 2-, x = 3-6). The cross-linking reaction of these ionic building blocks in formamide solution results in spontaneous gelation and eventually forms a monolithic dark brown gel. The wet gel is transformed into a highly porous aerogel by solvent exchanging and subsequent supercritical drying with CO 2. The resulting platinum polysulfide aerogels possess a highly porous and amorphous structure with an intact polysulfide backbone. These chalcogels feature an anionic network that is charged balanced with potassium cations, and hosts highly accessible S-S bonding sites, which allows for reversible cation exchange and mercury vapor capture that is superior to any known material.

Original languageEnglish (US)
Pages (from-to)14604-14608
Number of pages5
JournalJournal of the American Chemical Society
Issue number35
StatePublished - Sep 5 2012

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry


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