dc.contributor.author | Mathew, Snehamol | |
dc.contributor.author | Ganguly, Priyanka | |
dc.contributor.author | Rhatigan, Stephen | |
dc.contributor.author | Kumaravel, Vignesh | |
dc.contributor.author | Byrne, Ciara | |
dc.contributor.author | Hinder, Steven J. | |
dc.contributor.author | Bartlett, John | |
dc.contributor.author | Nolan, Michael | |
dc.contributor.author | Pillai, Suresh C. | |
dc.date.accessioned | 2020-03-11T16:11:42Z | |
dc.date.available | 2020-03-11T16:11:42Z | |
dc.date.copyright | 2018 | |
dc.date.issued | 2018-10-26 | |
dc.identifier.citation | Mathew, S., Ganguly, P., Rhatigan, S., Kumaravel, V., Byrne, C., Hinder, S.J., Bartlett, J., Nolan, M., Pillai, S.C. (2018) "Cu-Doped TiO2: Visible Light Assisted Photocatalytic Antimicrobial Activity", Applied Sciences 2018, (8), 2067. DOI: https://doi.org/10.3390/app8112067. | en_US |
dc.identifier.issn | 2076-3417 | |
dc.identifier.uri | http://research.thea.ie/handle/20.500.12065/3039 | |
dc.description.abstract | Surface contamination by microbes is a major public health concern. A damp environment is
one of potential sources for microbe proliferation. Smart photocatalytic coatings on building surfaces
using semiconductors like titania (TiO2) can effectively curb this growing threat. Metal-doped
titania in anatase phase has been proven as a promising candidate for energy and environmental
applications. In this present work, the antimicrobial efficacy of copper (Cu)-doped TiO2 (Cu-TiO2)
was evaluated against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive)
under visible light irradiation. Doping of a minute fraction of Cu (0.5 mol %) in TiO2 was carried out
via sol-gel technique. Cu-TiO2 further calcined at various temperatures (in the range of 500–700 ◦C) to
evaluate the thermal stability of TiO2 anatase phase. The physico-chemical properties of the samples
were characterized through X-ray diffraction (XRD), Raman spectroscopy, X-ray photo-electron
spectroscopy (XPS) and UV–visible spectroscopy techniques. XRD results revealed that the anatase
phase of TiO2 was maintained well, up to 650 ◦C, by the Cu dopant. UV–vis results suggested
that the visible light absorption property of Cu-TiO2 was enhanced and the band gap is reduced to
2.8 eV. Density functional theory (DFT) studies emphasize the introduction of Cu+ and Cu2+ ions
by replacing Ti4+ ions in the TiO2 lattice, creating oxygen vacancies. These further promoted the
photocatalytic efficiency. A significantly high bacterial inactivation (99.9999%) was attained in 30 min
of visible light irradiation by Cu-TiO2. | en_US |
dc.format | Pdf | en_US |
dc.publisher | MDPI | en_US |
dc.relation.ispartof | Applied Sciences | en_US |
dc.rights | Attribution 3.0 Ireland | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/ie/ | * |
dc.subject | Photocatalysis | en_US |
dc.subject | Doped semiconductors | en_US |
dc.subject | Titanium dioxide | en_US |
dc.subject | Escherichia coli | en_US |
dc.subject | Staphylococcus aureus | en_US |
dc.title | Cu-Doped TiO2: Visible Light Assisted Photocatalytic Antimicrobial Activity / | en_US |
dc.title.alternative | Special Issue "Cu and Cu-Based Nanoparticles: Applications in Catalysis" | en_US |
dc.type | Article | en_US |
dc.contributor.grantno | IVA5033 | en_US |
dc.contributor.grantno | PPRES052 and PPRES032 | en_US |
dc.contributor.grantno | SFI/US/14/e2915 | en_US |
dc.contributor.grantno | Horizon 2020 number 685451 | en_US |
dc.contributor.grantno | SFI/16/M-ERA/3418 (RATOCAT). | en_US |
dc.contributor.grantno | COST Action CM1104 | en_US |
dc.contributor.sponsor | European Union’s INTERREG VA Programme (Special EU Programmes Body) with match funding from the Department for the Economy and Department of Jobs, Enterprise and Innovation; the Institute of Technology Sligo President’s Bursary; Science Foundation Ireland through the US-Ireland R&D Partnership program; ERA.Net for Materials Research and Innovation (M-ERA.Net 2); European Union. | en_US |
dc.description.peerreview | yes | en_US |
dc.identifier.issue | 8 (Special Issue "Cu and Cu-Based Nanoparticles: Applications in Catalysis") | en_US |
dc.identifier.startpage | (2067) | en_US |
dc.identifier.url | https://doi.org/10.3390/app8112067 | en_US |
dc.identifier.volume | 2018 | en_US |
dc.rights.access | Creative Commons Attribution | en_US |
dc.subject.department | Dept of Life Sciences, ITS | en_US |