Abstract
Uniform antimony (Sb) nanotubes were successfully synthesized via a facile solvothermal method without the need for any surfactants or templates. The Sb nanotubes are confirmed to be pure rhombohedral phase and have better crystallinity. These nanotubes show middle-hollow and open-ended structures, as well as multi-walled structures with the wall thickness of about 10 nm. Also, they have an average size of the diameter of about 50 nm and the length of about 350 nm. On the basis of the structural and morphological studies, a possible rolling mechanism is proposed to explain the formation of Sb nanotubes. It is expected that uniform Sb nanotubes can further be used in wide applications. Graphical A possible rolling-formation mechanism is proposed for forming pure rhombhedral phase and high crystallinity antimony nanotubes without any surfactants or templates via a facile solvothermal method.
Highlights
Since the discovery of carbon nanotubes, one-dimensional nanotubes have attracted much attention due to their peculiar physical properties and promising applications as interconnect and functional units in fabricating electronic, optoelectronic, thermoelectric, and electromechanical nanodevices and so on [1,2,3,4]
Sb nanotubes were successfully synthesized via a facile solvothermal process without the need for any surfactants or templates
The XRD analysis confirms that the Sb nanotubes are pure rhombohedral phase
Summary
Since the discovery of carbon nanotubes, one-dimensional nanotubes have attracted much attention due to their peculiar physical properties and promising applications as interconnect and functional units in fabricating electronic, optoelectronic, thermoelectric, and electromechanical nanodevices and so on [1,2,3,4]. A large number of reports have focused on the exploring whether other layered materials can form tubular or similar nanostructures. Various nanotubes have been successfully synthesized by means of their twodimensional layer structure, such as boron nitride (BN), titanium dioxide (TiO2), tungsten disulfide (WS2), bismuth sulfide (Bi2S3), bismuth (Bi), and so on [5,6,7,8,9]. All the above mentioned reports indicate that substance possessing lamellar structures might be able to form nanotubes under favorable conditions. Similar to that of Bi, semimetallic antimony (Sb) has a pseudolamellar structure and has interesting features such as low conduction band, effective mass, and high electron mobility [10,11,12,13].
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