title: Iron sulfide (FeS) nanotubes using sulfurization of hematite nanowires.
abstract: We report the phase transformation of hematite (α-Fe2O3) single crystal nanowires to crystalline FeS nanotubes using sulfurization with H2S gas at relatively low temperatures. Characterization indicates that phase pure hexagonal FeS nanotubes were formed. Time-series sulfurization experiments suggest epitaxial growth of FeS as a shell layer on hematite. This is the first report of hollow, crystalline FeS nanotubes with NiAs structure and also on the Kirkendall effect in solid-gas reactions with nanowires involving sulfurization.
authors.affiliation: Department of Chemical Engineering and Conn Center for Renewable Energy Research, University of Louisville, Louisville, Kentucky 40292, USA.
authors.forename: Dustin R
authors.initials: DR
authors.lastname: Cummins
authors.forename: Harry B
authors.initials: HB
authors.lastname: Russell
authors.forename: Jacek B
authors.initials: JB
authors.lastname: Jasinski
authors.forename: Madhu
authors.initials: M
authors.lastname: Menon
authors.forename: Mahendra K
authors.initials: MK
authors.lastname: Sunkara