Selective surfaces: High-surface-area zinc tin sulfide chalcogels

Youngtak Oh, Santanu Bag, Christos D. Malliakas, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Porous zinc tin sulfide aerogel materials were constructed by metathesis reactions between Zn(acac)2•H2O and tetrahedral thiostannate cluster salts containing discrete [SnS4]4-, [Sn2S6]4-, and [Sn4S 10]4- units. Self-assembly reactions of the Zn 2+ linker and anionic thiostannate clusters yielded polymeric random Zn/Sn/S networks with gelation properties. Supercritical drying of the gels and solvent/counterion removal resulted in a metal sulfur framework. Zn 2SnxS2x+2 (x = 1, 2, 4) aerogels showed high surface areas (363-520 m2/g) and pore volumes (1.1-1.5 cm 3/g), and wide bandgap energies (2.8-3.2 eV). Scanning and transmission electron microscopy studies show the pores are micro- (d <2 nm), meso- (2 nm <d <50 nm), and macro- (d > 50 nm) regions. The zinc chalcogenide aerogels also possess high affinities toward soft heavy metals and reversible absorption of strong electron-accepting molecules.

Original languageEnglish
Pages (from-to)2447-2456
Number of pages10
JournalChemistry of Materials
Volume23
Issue number9
DOIs
Publication statusPublished - May 10 2011

Fingerprint

Aerogels
Tin
Zinc
Gelation
Heavy Metals
Sulfur
Self assembly
Heavy metals
Drying
Energy gap
Gels
Salts
Metals
Transmission electron microscopy
Scanning electron microscopy
Molecules
Electrons
Sulfides
tin sulfide

Keywords

  • chalcogenides
  • gas absorption
  • gas separation
  • heavy metal removal
  • porous materials

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Selective surfaces : High-surface-area zinc tin sulfide chalcogels. / Oh, Youngtak; Bag, Santanu; Malliakas, Christos D.; Kanatzidis, Mercouri G.

In: Chemistry of Materials, Vol. 23, No. 9, 10.05.2011, p. 2447-2456.

Research output: Contribution to journalArticle

Oh, Youngtak ; Bag, Santanu ; Malliakas, Christos D. ; Kanatzidis, Mercouri G. / Selective surfaces : High-surface-area zinc tin sulfide chalcogels. In: Chemistry of Materials. 2011 ; Vol. 23, No. 9. pp. 2447-2456.
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