Szczegóły publikacji

Opis bibliograficzny

Autorzy (5)

• AGHSynowiec Milena
• AGHZazakowny Karolina
• Szczepanowicz Krzysztof
• AGHTrenczek-Zając Anita
• AGHRadecka Marta

Dane bibliometryczne

ID BaDAP	120431
Data dodania do BaDAP	2019-03-15
Tekst źródłowy	URL
Rok publikacji	2018
Typ publikacji	abstrakt w czasopiśmie
Otwarty dostęp
Creative Commons
Czasopismo/seria	Functional Nanostructures Proceedings

Abstract

Nowadays, synthesis of anatase TiO2 crystals with diverse shapes has drawn extensive research interests because of the different average surface energy of their facets, which ranges from 0.90 J/m2 for (001) to 0.44 J/m2 for (101) [1,2]. It is believed that these differences may affect the process of covering titanium dioxide (3.2 eV) with a narrow-bandgap semiconductors. Therefore, the absorption spectrum of TiO2 can be extended to visible range of light what provides new efficient materials for hydrogen generation. The aim of this work is to study the role of shape of TiO2 nanocrystals for creation of TiO2/Fe2O3 heterojunction. TiO2 nanocrystals with well-defined morphology were obtained via hydrothermal synthesis. Diethanolamine (DEA) was used as major shape-controlling agent to fabricate TiO2 NCs in the shape of rods, ellipsoids, cubes and sheetslike with different amount of high- and low-energy exposed facets. Selected nanocrystals were covered with Fe2O3 using the co-precipitation method. Optimal conditions for this method, the concentration of Fe3+ and OH- ions, were chosen using commercial Degussa P25 (20% rutile, 80% anatase) powder. The properties of TiO2/Fe2O3 materials were characterized by X-ray Diffraction XRD, Scanning and Transmission Electron Microscopy SEM, TEM, UV-vis spectroscopy, and Zeta potential.

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