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2 Optica Applicata

2 2012

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Preparation and photocatalytic activity of vanadium/silver doped TiO2 thin films obtained by sol-gel method

100%

Nocun M. , Kwasny S.

tom Vol. 42, nr 2

323-336

In our investigation, V/Ag doped TiO2 thin films were prepared on glass substrates. A thin film of SiO2 was prepared as a blocking layer by the dip coating sol-gel technique. A catalytic effect was investigated for obtained samples using Rhodamine B as a probe. Transmittances of the samples were characterized using a UV-VIS spectrophotometer. Subsequently band-gap energy (Eg) was estimated for these films. Chemical composition of the samples was studied by photoelectron spectroscopy (XPS). Powders obtained from sols were characterized by FTIR spectroscopy and X-ray diffraction (XRD).

Synthesis, chemical characterization and antifungal activity of thin layers prepared by sol-gel method

80%

Nocun M. , Zontek J. , Kwasny S.

tom Vol. 42, nr 2

315-322

Sol-gel method was used to prepare SiO2-TiO2 thin layers on the microscope slide glasses with additions of Cu, Ag, Au compounds. The films were calcimined at 150 °C for 1 hour. We studied the morphology of the following samples by scanning electron microscopy (SEM with EDS analysis), and the X-ray photoelectron spectroscopy (XPS). Antifungal properties of the layers were tested with the use of fungi Penicyllium. The results have shown that the best antifungal effect among the examined layers has got the sample with Au ions addition.