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

Youngtak Oh, Collin D. Morris, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

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
Pages (from-to)14604-14608
Number of pages5
JournalJournal of the American Chemical Society
Volume134
Issue number35
DOIs
Publication statusPublished - Sep 5 2012

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Polysulfides
Aerogels
Mercury (metal)
Ion Exchange
Mercury
Sorption
Ion exchange
Vapors
Cations
Gels
Positive ions
Cross Reactions
Gelation
Carbon Monoxide
Platinum
Potassium
Drying
Metals
polysulfide

ASJC Scopus subject areas

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

Cite this

Polysulfide chalcogels with ion-exchange properties and highly efficient mercury vapor sorption. / Oh, Youngtak; Morris, Collin D.; Kanatzidis, Mercouri G.

In: Journal of the American Chemical Society, Vol. 134, No. 35, 05.09.2012, p. 14604-14608.

Research output: Contribution to journalArticle

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