Abstract
TiO2 nanostructures were synthesized by simple chemical routes. As-synthesized nanostructures were characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, high-resolution transmission electron microscopy and selected area diffraction patterns. In the present work, the sensing element was fabricated as thin pellets of TiO2 nanoparticles without using any sensitizers coating. A novel approach of adopting gas sensing measurements of ethanol vapours at a low pressure condition inside a vacuum system has been achieved. All the samples show high sensor response towards ethanol vapour detection at relatively low operating temperatures. Thus, a low-cost industrial production of efficient ethanol gas sensor with good response and recovery time is possible with the synthesized TiO2 nanostructures.
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