One-step growth of Si{sub 3}N{sub 4} stem-branch featured nanostructures: Morphology control by VS and VLS mode

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.06.041· OSTI ID:21580243

Qiushi, Wang; Wei, Gao ^[1]; Lianchen, Shan ^[2]; Jian, Zhang; Yunxia, Jin; Ridong, Cong ^[1]

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1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012 (China)
2. Institute of Materials Research (IMO), Hasselt University, Wetenschapspark 1, BE-3590 Diepenbeek (Belgium)

We report here one-step synthesis of Si{sub 3}N{sub 4} nanodendrites by selectively applying a vapor-solid (VS) and vapor-liquid-solid (VLS) strategy via direct current arc discharge method. The resultant nanodendrites were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy and X-ray powder diffraction. The spine-shaped nanodendrites were generated by a noncatalytic growth following a VS mode. The uniform secondary nanowire branches were epitaxial grown from two side surfaces of the nanowire stems. The pine-shaped nanodendrites were obtained through a catalytic growth in a VLS process. These branch nanowires were unsystematically grown from the nanocone-like stems. The photoluminescence spectra of the nanodendrites show a strong white light emission around 400-750 nm, suggesting their potential applications in light and electron emission devices. - Graphical abstract: Spine-shaped and pine-shaped Si{sub 3}N{sub 4} hierarchical nanostructures were synthesized by VS and VLS mode with plasma-assisted dc arc discharge method. Highlights: > Si{sub 3}N{sub 4} stem-branch featured nanostructures have been prepared. > Spine-shaped nanodendrites were generated by a noncatalytic growth following a VS mode. > Pine-shaped nanodendrites were obtained through a catalytic growth in a VLS process.

• OSTI ID: 21580243
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 9; Other Information: DOI: 10.1016/j.jssc.2011.06.041; PII: S0022-4596(11)00369-0; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CONTROL
DIRECT CURRENT
ELECTRON EMISSION
PHOTOLUMINESCENCE
PINES
QUANTUM WIRES
SCANNING ELECTRON MICROSCOPY
SILICON NITRIDES
SOLIDS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
VERTEBRAE
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
BODY
COHERENT SCATTERING
CONIFERS
CURRENTS
DIFFRACTION
ELECTRIC CURRENTS
ELECTRON MICROSCOPY
EMISSION
LUMINESCENCE
MICROSCOPY
NANOSTRUCTURES
NITRIDES
NITROGEN COMPOUNDS
ORGANS
PHOTON EMISSION
PINOPHYTA
PLANTS
PNICTIDES
SCATTERING
SILICON COMPOUNDS
SKELETON
SPECTROSCOPY
TREES