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Large-scale Synthesis of β -SiC Nanochains and Their Raman/Photoluminescence Properties

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ABSTRACT

Although the SiC/SiO2 nanochain heterojunction has been synthesized, the chained homogeneous nanostructure of SiC has not been reported before. Herein, the novel β-SiC nanochains are synthesized assisted by the AAO template. The characterized results demonstrate that the nanostructures are constructed by spheres of 25–30 nm and conjoint wires of 15–20 nm in diameters. Raman and photoluminescence measurements are used to explore the unique optical properties. A speed-alternating vapor–solid (SA-VS) growth mechanism is proposed to interpret the formation of this typical nanochains. The achieved nanochains enrich the species of one-dimensional (1D) nanostructures and may hold great potential applications in nanotechnology.

No MeSH data available.


Typical FESEM images of the ordered nanopores AAO template prepared by aluminum anodic oxidation processes. a The top surface image. b View of the vertical section. c The enlarged image of marked area in Figure 2a.
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Figure 2: Typical FESEM images of the ordered nanopores AAO template prepared by aluminum anodic oxidation processes. a The top surface image. b View of the vertical section. c The enlarged image of marked area in Figure 2a.

Mentions: Typical FESEM image scanned from the top surface of the AAO template is distinctly shown in Figure 2a. The well-ordered pores are clearly observed for the prepared template. Figure 2b is the side view of the vertically cut template, which clearly shows the AAO template possessing coterminous nanopores parallel to each other and perpendicular to the surface of the template. Figure 2c is the enlarged image of rectangular area in Figure 2a, it can be observed that AAO nanopores are inhomogeneously distributed with diameters of 30–70 nm and distances between the neighboring pore of 10–30 nm.


Large-scale Synthesis of β -SiC Nanochains and Their Raman/Photoluminescence Properties
Typical FESEM images of the ordered nanopores AAO template prepared by aluminum anodic oxidation processes. a The top surface image. b View of the vertical section. c The enlarged image of marked area in Figure 2a.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211428&req=5

Figure 2: Typical FESEM images of the ordered nanopores AAO template prepared by aluminum anodic oxidation processes. a The top surface image. b View of the vertical section. c The enlarged image of marked area in Figure 2a.
Mentions: Typical FESEM image scanned from the top surface of the AAO template is distinctly shown in Figure 2a. The well-ordered pores are clearly observed for the prepared template. Figure 2b is the side view of the vertically cut template, which clearly shows the AAO template possessing coterminous nanopores parallel to each other and perpendicular to the surface of the template. Figure 2c is the enlarged image of rectangular area in Figure 2a, it can be observed that AAO nanopores are inhomogeneously distributed with diameters of 30–70 nm and distances between the neighboring pore of 10–30 nm.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Although the SiC/SiO2 nanochain heterojunction has been synthesized, the chained homogeneous nanostructure of SiC has not been reported before. Herein, the novel β-SiC nanochains are synthesized assisted by the AAO template. The characterized results demonstrate that the nanostructures are constructed by spheres of 25–30 nm and conjoint wires of 15–20 nm in diameters. Raman and photoluminescence measurements are used to explore the unique optical properties. A speed-alternating vapor–solid (SA-VS) growth mechanism is proposed to interpret the formation of this typical nanochains. The achieved nanochains enrich the species of one-dimensional (1D) nanostructures and may hold great potential applications in nanotechnology.

No MeSH data available.