Abstract
Single-crystal SnO2 nanofibers have been formed from SnO2 polycrystals via reaction at low oxygen partial pressures. Polycrystalline SnO2 disks coated with Au nanoparticles were exposed to humid H2/N2 at 700 to 800 °C. Single-crystal SnO2 nanofibers formed beneath Au nanoparticles, with the nanofiber length oriented parallel to the [100] crystallographic direction of SnO2. Because this simple process does not require either a separate source of a Sn–O-bearing vapor species located upstream of the substrate or a temperature gradient, single-crystal nanofibers may be formed on large area SnO2-bearing substrates.
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This project was financially supported by the National Science Foundation through NSF-IGERT Grant No. 0221678 and by the Air Force Office of Scientific Research through Grant No. FA9550-05-1-0092.
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Carney, C.M., Akbar, S.A., Cai, Y. et al. Reactive conversion of polycrystalline SnO2 into single-crystal nanofiber arrays at low oxygen partial pressure. Journal of Materials Research 23, 2639–2644 (2008). https://doi.org/10.1557/JMR.2008.0321
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DOI: https://doi.org/10.1557/JMR.2008.0321