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

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.09.013· OSTI ID:21494119

Yi, Liu; Kanhere, Pushkar D; Wong, Chui Ling ^[1]; Yuefeng, Tian ^[2]; Yuhua, Feng ^[3]; Boey, Freddy ^[1]; Wu, Tom ^[2]; Hongyu, Chen ^[3]; White, Tim J; Zhong, Chen ^[1]

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1. School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore)
2. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)
3. Department of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 639798 (Singapore)

A novel chalcogenide, [Mn{sub 2}Sb{sub 2}S{sub 5}(N{sub 2}H{sub 4}){sub 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-bar (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 SbS{sub 3} trigonal-pyramidal geometry, and the Sb2 site adopts a SbS{sub 4} trigonal bipyramidal coordination geometry. It has an optical band gap of about {approx}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 Curie-Weiss law in the range of 50-300 K. -- Graphical abstract: A novel chalcogenide, [Mn{sub 2}Sb{sub 2}S{sub 5}(N{sub 2}H{sub 4}){sub 3}] (1), synthesized by hydrazine-hydrothermal method, has a band gap of about {approx}2.09 eV and displays photocatalytic behaviors under visible light irradiation. Display Omitted

• OSTI ID: 21494119
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 11; Other Information: DOI: 10.1016/j.jssc.2010.09.013; PII: S0022-4596(10)00399-3; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMONY SULFIDES
CRYSTALLOGRAPHY
CURIE-WEISS LAW
EV RANGE 01-10
HYDRAZINE
HYDROTHERMAL SYNTHESIS
INTERSTITIAL HYDROGEN GENERATION
IRRADIATION
LAYERS
LIGANDS
MAGNETIC SUSCEPTIBILITY
MANGANESE SULFIDES
PHOTOCATALYSIS
SPACE GROUPS
SPECTRA
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TRICLINIC LATTICES
ANTIMONY COMPOUNDS
CATALYSIS
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ENERGY RANGE
EV RANGE
MAGNETIC PROPERTIES
MANGANESE COMPOUNDS
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SULFIDES
SULFUR COMPOUNDS
SYMMETRY GROUPS
SYNTHESIS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS