Synthesis and properties of delafossite CuAlO2 nanowires
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Ultra-long and uniform CuAlO2 nanowires were successfully synthesized within a porous anodic aluminum oxide template by means of sol–gel method at 900 °C. The results of X-Ray diffraction indicate that the obtained CuAlO2 nanowires have a single delafossite structure. The scanning electron microscopy and transmission electron microscopy show that the CuAlO2 nanowires have a uniform diameter with about 50 nm and a length up to 10 μm. Room-temperature photoluminescence measurement of nanowires exhibits an ultraviolet near-band-edge emission around 350 nm (3.54 eV).
KeywordsCuAlO2 Nanowires AAO template Optical property
This work was financially supported by the Doctor Fund of Guizhou University (Z065020) and the Graduate Innovation Fund of Guizhou University (2007013).