Hydrazine-hydrothermal method to synthesize three-dimensional chalcogenide framework for photocatalytic hydrogen generation

Yi Liu, Pushkar D. Kanhere, Chui Ling Wong, Yuefeng Tian, Yuhua Feng, Freddy Boey, Tao Wu, Hongyu Chen, Tim J. White, Zhong Chen, Qichun Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

89 Scopus citations

Abstract

A novel chalcogenide, [Mn2Sb2S5(N 2H4)3] (1), has been synthesized by the hydrazine-hydrothermal method. X-ray crystallography study reveals that the new compound 1 crystallizes in space group P1 (no. 2) of the triclinic system. The structure features an open neutral three-dimensional framework, where two-dimensional mesh-like inorganic layers are bridged by intra- and inter-layer hydrazine ligands. Both two Mn1 and Mn2 sites adopt distorted octahedral coordination. While two Sb1 and Sb2 sites exhibit two different coordination geometries, the Sb1 site is coordinated with three S atoms to generate a SbS3 trigonal-pyramidal geometry, and the Sb2 site adopts a SbS 4 trigonal bipyramidal coordination geometry. It has an optical band gap of about ∼2.09 eV, which was deduced from the diffuse reflectance spectrum, and displays photocatalytic behaviors under visible light irradiation. Magnetic susceptibility measurements show compound 1 obeys the CurieWeiss law in the range of 50300 K.

Original languageEnglish (US)
Pages (from-to)2644-2649
Number of pages6
JournalJournal of Solid State Chemistry
Volume183
Issue number11
DOIs
StatePublished - Nov 1 2010

Keywords

  • Chalcogenide materials
  • Crystal structure
  • Magnetic
  • Optical
  • Photocatalytic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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