Nanocrystalline Ag/TiO2 composite thin films were synthesized using a two-steps: the in-situ precipitation of Ag nanoparticles followed by an in-situ sol-gel reaction of titanium iso-propoxide in a weak-polyion-multilayer (PEM) template. The subsequent annealing of the precursor yields nanostructured Ag(x)/TiO2 films. In the near-UV range the expected photo-catalytic behavior of TiO2 is greatly enhanced as it is assisted by the near-field amplitudes of the localized surface plasmon resonance (LSPR) of the Ag nanoparticles in the Ag(x)/TiO2 films.
COBISS.SI-ID: 23788071
The sol–gel method was used to synthesize Bi12SiO20 thin films. Two synthesis routes with two different solvents: 2-ethoxyethanol and acetic acid were used and compared. A different coordination of the bismuth ion was observed in the sols prepared with AcOH, and as a result, stable sols were formed with a shorter gelation time tG =84 h (c = 0.76 M), when compared with the sols prepared from 2-ethoxyethanol tG = 580 h (c = 0.76 M). The microstructures of the Bi12SiO20 thin films prepared from sols using EtoEtOH were more homogeneous and dense then those when AcOH was used as the solvent.
COBISS.SI-ID: 23796263