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A simple solution route to single-crystalline Sb2O3 nanowires with rectangular cross sections.

Zhengtao Deng¹, Fangqiong Tang, Dong Chen

¹Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.

The Journal of Physical Chemistry. B

|September 15, 2006

Summary

Researchers developed a straightforward method for synthesizing uniform antimony trioxide (Sb(2)O(3)) nanowires. These novel nanowires exhibit unique room-temperature ultraviolet luminescence, paving the way for advanced nanodevices.

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Area of Science:

Materials Science
Nanotechnology
Inorganic Chemistry

Background:

Antimony trioxide (Sb(2)O(3)) is a significant inorganic compound with various applications.
Developing scalable synthesis methods for well-defined nanostructures is crucial for advanced materials.
Orthorhombic Sb(2)O(3) nanowires with controlled morphology are of interest for their unique properties.

Purpose of the Study:

To develop a simple solution-based route for large-scale synthesis of uniform, single-crystalline Sb(2)O(3) nanowires.
To characterize the structural, morphological, and optical properties of the synthesized nanowires.
To investigate the novel room-temperature photoluminescence properties of these nanowires.

Main Methods:

Direct air oxidation of bulk metal antimony (Sb) in a mixed solution of ethylenediamine (EDA) and deionized water (DIW).

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Characterization using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray spectroscopy (EDX), Transmission Electron Microscopy (TEM), Selected Area Electron Diffraction (SAED), High-Resolution TEM (HRTEM), Fourier-Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy, UV-Vis absorption, and Photoluminescence (PL) spectroscopy.

Analysis of nanowire dimensions (length, width, thickness).

Main Results:

Successfully synthesized uniform, single-crystalline, orthorhombic Sb(2)O(3) nanowires with rectangular cross sections.
Nanowires exhibit lengths of hundreds of micrometers and dimensions of 80-100 nm in width and 60-80 nm in thickness.
Observed novel room-temperature photoluminescence with a strong UV emission band at 374 nm, indicating an optical band gap of 3.3 eV.

Conclusions:

The developed solution route is effective for large-scale synthesis of high-quality Sb(2)O(3) nanowires.
The unique UV luminescence properties of these nanowires are reported for the first time.
The synthesized Sb(2)O(3) nanowires are promising functional materials for advanced nanodevices.