author：Chao, T. C., T. W. Chiu, and Y. S. Fu
CuFeO2 delafossite type nano fibers were fabricated by electrospinning. This experiment explored the effects of annealing temperature, precursor concentration, and ambient annealing on the fiber structure. The results of X-ray diffraction studies (XRD) and field emission scanning electronic microscopy (FESEM) indicated that a pure phase delafossite-type CuFeO2 and perfect nanofibers can be synthesized by annealing at 500 degrees C in air for 10 min and 750 degrees C in nitrogen for 10 min. The optical properties were measured by UV/VIS spectrometer and the band gap was estimated at 1.4 eV. Furthermore, the specific surface area of the CuFeO2 fibers was 4.33 m(2)/g, as determined by BET surface area measurements.