Iron Sulfide (FeS) Nanotubes Using Sulfurization of Hematite Nanowires

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• 作者：Dustin R. Cummins ; Harry B. Russell ; Jacek B. Jasinski ; Madhu Menon ; Mahendra K. Sunkara
• 刊名：Nano Letters
• 出版年：2013
• 出版时间：June 12, 2013
• 年：2013
• 卷：13
• 期：6
• 页码：2423-2430
• 全文大小：610K
• 年卷期：v.13,no.6(June 12, 2013)
• ISSN：1530-6992

文摘

We report the phase transformation of hematite (伪-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鈥揼as reactions with nanowires involving sulfurization.r>

Keywords:

FeS; troilite; nanotubes; Kirkendall effect; optical properties; sulfurization; hematite nanowire arrays