Electrospinning synthesis of CdIn2O4 nanofibers for ethanol detection.

In this work, CdIn 2 O 4 nanofibers with diameter about 100 nm have been synthesized successfully through an electrospinning method with the assistance of poly (vinyl pyrrolidone) (PVP) followed by calcinating in air at 800 °C. The morphology, structure and composition of the as-prepared products were characterized by powder X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). The characterization results indicated that high-purity CdIn 2 O 4 nanofibers could be obtained by using the electrospinning method with optimal Cd/In molar-ratio. By using as-prepared CdIn 2 O 4 nanofibers as sensing material, semiconductor-type gas sensors were constructed and used to detect ethanol vapor at ppm level. Compared to CdIn 2 O 4 materials with conventional particulate shape, the as-prepared CdIn 2 O 4 nanofibers sensing material exhibited improved sensing performance in sensitivity and long-term stability. [ABSTRACT FROM AUTHOR]