| Title |
Se-WO3 dangų ant AISI304 markės plieno sintezė ir fotoelektrokatalizinis aktyvumas |
| Another Title |
Synthesis and photoelectrocatalytic activity of Se-WO3 coatings on AISI304 type steel. |
| Authors |
Ostachavičiūtė, S ; Šulčiūtė, A ; Valatka, E |
| Full Text |
|
| Is Part of |
Cheminė technologija.. Kaunas : Technologija. 2010, Nr. 3-4, p. 41-48.. ISSN 1392-1231. eISSN 2029-719X |
| Abstract [eng] |
The aim of the current work was to obtain photoactive Se–WO3 coatings on stainless steel and to determine their photoelectrocatalytic activity towards oxidation of some aliphatic alcohols (methanol, ethanol, 2-propanol, 1-buthanol). This work is relevant to developing photocatalytic methods for the oxidative destruction of organic pollutants. Se–WO3 coatings on stainless steel were prepared by electrochemical deposition under potentiostatic conditions. The synthesis was carried out by using 0.1 M Na2WO4 + 0.1 M H2O2 + 0.01 H2SeO3 + 0.3 M HNO3 electrolyte at 291 K. The obtained Se–WO3 coatings were characterized by photovoltammetry and X-ray diffraction (XRD) analysis. The experimental results show that the most uniform and mechanically stable Se–WO3 coatings were obtained at -0.35 V, the deposition time being 20 min. The incident photon-tocurrent efficiency (IPCE) amounts to 12% at +0.8 V for a Se– WO3 electrode annealed at 673 K. Such coatings consist mostly of the monoclinic WO3 phase, as was evidenced by XRD analysis. The average WO3 crystallite size was calculated to be about 62.6 nm. [...]. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
Lithuanian |
| Publication date |
2010 |
| CC license |
|
