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Exploration of the antibacterial capacity and ethanol sensing ability of Cu-TiO2 nanoparticles


Sagadevan, Suresh and Vennila, Selvaraj and Singh, Preeti and Lett, J. Anita and Won, Chun Oh and Paiman, Suriati and Mohammad, Faruq and Al-Lohedan, Hamad A. and Is, Fatimah and M. M., Shahid and Obulapuram, Prasanna Kumar (2020) Exploration of the antibacterial capacity and ethanol sensing ability of Cu-TiO2 nanoparticles. Journal of Experimental Nanoscience, 15 (1). 337 - 349. ISSN 1745-8080; ESSN: 1745-8099


Titanium oxide (TiO2) is one of the most scrutinized material because of its in-built fundamental properties and has been developed as an outstanding photo-catalytic material intended for many different industrial applications. In order to further explore the properties of TiO2, we prepared Copper-loaded TiO2 (Cu-TiO2) nanoparticles (NPs) for inhibiting the growth of bacterial cells and also to serve as a chemical sensor. The physico-chemical characteristics of the synthesized Cu-TiO2 NPs were characterized by many different techniques for the crystallinity, bonding and functionality, morphology, elemental composition, and absorption characteristics. From the results, we confirm for the formation of anatase phase of TiO2 having a tetragonal crystal system, while the morphology studies indicated that the Cu dope TiO2 has spherical morphology. The elemental analysis confirmed for the inclusion of Cu into TiO2 crystal lattice and the absorption spectroscopic analysis helped for the bandgap calculation and visible light absorption property of Cu-TiO2 NPs. The metal nanoclusters of Cu are observed to be deposited on different phases and sites of TiO2 resulting in the inter-band transitions. Further, the sensitivity of Cu-TiO2 as a chemical sensor is determined by fabricating the electrode at the FTO glass substrate where the ethanol sensitivity was found to be little increased/enhanced with Cu loading. Finally, the antibacterial activity of Cu-TiO2 NPs was confirmed by its activity against various bacterial cultures and are found to be efficient.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1080/17458080.2020.1796979
Publisher: Taylor and Francis
Keywords: Cu-doped TiO2; Antibacterial activity; Ethanol detection; Chemical sensors; Phase transition; Escherichia coli; Staphylococcus aureus
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 01 Nov 2021 23:42
Last Modified: 01 Nov 2021 23:42
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/17458080.2020.1796979
URI: http://psasir.upm.edu.my/id/eprint/88902
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