Electrospinning based CdO nanograins for formaldehyde vapour detection by chemiresistive method

In the present work, polyvinyl alcohol (PVA) based Cadmium oxide (CdO) beads free nanofibers were successfully deposited through an electrospinning method on a glass substrate fixed over an aluminium collector. The deposited PVA/CdO nanofibers were vacuum annealed followed by calcinated to yield one-dimensional CdO nano-grains. The calcined CdO was tested for various vapours and found better response towards formaldehyde vapour at elevated temperatures. Compositional, morphology and sensing mechanism were analysed and reported.