4 documents found, page 1 of 1
UV-C irradiation-based inactivation of SARS-CoV-2 in contaminated porous and no...
Tomás, Ana Luísa; Reichel, Anna; Silva, Patrícia M.; Silva, Pedro G.; Pinto, João; Calado, Inês; Campos, Joana; Silva, Ilídio; Machado, VascoThe SARS-CoV-2 pandemic emphasized effective cleaning and disinfection of common spaces as an essential tool to mitigate viral transmission. To address this problem, decontamination technologies based on UV-C light are being used. Our aim was to generate coherent and translational datasets of effective UV-C-based SARS-CoV-2 inactivation protocols for the application on surfaces with different compositions. Viru...
The role of Ga and Bi doping on the local structure of transparent zinc oxide t...
Correia, Filipe Costa; Ribeiro, Joana Margarida Fernandes Silva; Kuzmin, Alexei; Pudza, I.; Kalinko, A.; Welter, Edmund; Mendes, AdelioTransparent undoped ZnO and additionally doped with Ga and Bi thin films were produced by magnetron sputtering. The thin films were comprehensively characterized by X-ray absorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission and scanning transmission electron (TEM, STEM) microscopy and Raman spectroscopy. All undoped and doped films crystallise in a ZnO phase with the hexagon...
ZnAl2O4 decorated Al-doped ZnO tetrapodal 3D networks: microstructure, Raman an...
Rodrigues, Joana; Hoppe, Matthias; Sedrine, Nabiha Ben; Wolff, Niklas; Duppel, Viola; Kienle, Lorenz; Adelung, Rainer; Mishra, Yogendra K.3D networks of Al-doped ZnO tetrapods decorated with ZnAl2O4 particles synthesised by the flame transport method were investigated in detail using optical techniques combined with morphological/structural characterisation. Low temperature photoluminescence (PL) measurements revealed spectra dominated by near band edge (NBE) recombination in the UV region, together with broad visible bands whose peak positions s...
Iridium(III)porphyrin arrays with tuneable photophysical properties
Castro, M. Cidália R.; Sedrine, Nabiha Ben; Monteiro, Teresa; Machado, Ana V.The photophysical properties of iridium(III) porphyrins complexes with two different axial ligands (Cl(CO) and bipyridine (bpy)) in solution and in cellulose acetate polymer matrix were investigated. The axial ligands substitution was made aiming to evaluate the photophysical properties and the solubility in different solvents. Therefore, dissimilar from the free porphyrin, non-polar solvents (as toluene) favou...