Unwoven WO3 nanofiber mats were successfully prepared by
combining of electrospinning and sol-gel chemistry of W(OC2H5)6
under the soft template by P123 triblock copolymer. Through various
material analyses, the resultant mat has been confirmed to consist of
polycrystalline WO3 particle-aggregated nanofibers with an average
diameter of 85 nm. This WO3 mat was mesoporous due to wormholelike
fibrous morphology and space between unwoven nanofibers.
They could act as an excellent active layer in the electrochromic and
gas-sensing devices due to their high surface-to-volume ratio and
effective electron transportation.