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- Title
Synthesis of Shape-Tailored WO<sub>3</sub> Micro-/Nanocrystals and the Photocatalytic Activity of WO<sub>3</sub>/TiO<sub>2</sub> Composites.
- Authors
Székely, István; Kovács, Gábor; Baia, Lucian; Danciu, Virginia; Pap, Zsolt
- Abstract
A traditional semiconductor (WO3) was synthesized from different precursors via hydrothermal crystallization targeting the achievement of three different crystal shapes (nanoplates, nanorods and nanostars). The obtained WO3 microcrystals were analyzed by the means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflectance spectroscopy (DRS). These methods contributed to the detailed analysis of the crystal morphology and structural features. The synthesized bare WO3 photocatalysts were totally inactive, while the P25/WO3 composites were efficient under UV light radiation. Furthermore, the maximum achieved activity was even higher than the bare P25's photocatalytic performance. A correlation was established between the shape of the WO3 crystallites and the observed photocatalytic activity registered during the degradation of different substrates by using P25/WO3 composites.
- Subjects
CERIUM; SEMICONDUCTOR research; PHOTOCATALYSTS; TUNGSTEN compounds; COMPOSITE materials research
- Publication
Materials (1996-1944), 2016, Vol 9, Issue 4, p258
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma9040258