Highly sensitive ethanol sensor based on TiO2 nanoparticles and its photocatalyst activity

Singh, Preeti and MAbdullah, M. and Sagadevan, Suresh and Kaur, Chanmeet and Ikram, Saiqa (2019) Highly sensitive ethanol sensor based on TiO2 nanoparticles and its photocatalyst activity. Optik, 182. pp. 512-518. ISSN 0030-4026, DOI https://doi.org/10.1016/j.ijleo.2019.01.077.

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Official URL: https://doi.org/10.1016/j.ijleo.2019.01.077


Photo-catalytic decolorization or adsorption of an aqueous solution of 3 ppm of brilliant cresyl blue (BCB) in a suspension of 0.26 gm/100 ml of TiO 2 metal oxide semiconductor as a catalyst, was achieved by using 200Watts UV lamp from an external source. The disappearance of the original colored dye concentration with irradiation time was monitored using UV-VIS Spectrophotometer. It was found that 74% of BCB dye was degraded after 120 min of irradiation time. In addition, the sensing properties of the TiO 2 films were examined on behalf of numerous concentrations of ethanol in the liquid phase by a straightforward and dependable I–V procedure at normal room conditions. The sensitivity of the sensor was found to be ˜0.052 mAM −1 cm -2 for ethanol. Thus, the degradation rate and the subsequent chemical sensing properties of TiO 2 nanoarchitecture are of immense importance for the functions of TiO 2 structure as a photo-catalyst and chemical sensor. © 2019 Elsevier GmbH

Item Type: Article
Uncontrolled Keywords: Photocatalytic process; Degradation; Brilliant cresyl blue; Titanium oxide; Irradiation; Ethanol sensing
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 14 Jan 2020 03:35
Last Modified: 14 Jan 2020 03:35
URI: http://eprints.um.edu.my/id/eprint/23420

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