Insight into the synthesis procedure of Fe3+/TiO2-based photocatalyst applied in the selective photo-oxidation of benzyl alcohol under sun-imitating lamp

Agnieszka Magdziarz; Juan C Colmenares; Olga Chernyayeva; Dmytro Lisovytskiy; Justyna Grzonka; Krzysztof Kurzydłowski; Kinga Freindl; Józef Korecki

doi:10.1016/j.ultsonch.2017.03.012

Insight into the synthesis procedure of Fe³⁺/TiO₂-based photocatalyst applied in the selective photo-oxidation of benzyl alcohol under sun-imitating lamp

Ultrason Sonochem. 2017 Sep:38:189-196. doi: 10.1016/j.ultsonch.2017.03.012. Epub 2017 Mar 9.

Authors

Agnieszka Magdziarz¹, Juan C Colmenares², Olga Chernyayeva³, Dmytro Lisovytskiy³, Justyna Grzonka⁴, Krzysztof Kurzydłowski⁵, Kinga Freindl⁶, Józef Korecki⁷

Affiliations

¹ Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. Electronic address: amagdziarz@ichf.edu.pl.
² Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. Electronic address: jcarloscolmenares@ichf.edu.pl.
³ Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
⁴ Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland; Institute of Electronic Materials Technology, Wolczynska 133, 01-919 Warsaw, Poland.
⁵ Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland.
⁶ Jerzy Haber Institute of Catalysis and Surface Chemistry PAS, Niezapominajek 8, 30-239 Cracow, Poland.
⁷ Jerzy Haber Institute of Catalysis and Surface Chemistry PAS, Niezapominajek 8, 30-239 Cracow, Poland; Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Cracow, Poland.

PMID: 28633818
DOI: 10.1016/j.ultsonch.2017.03.012

Abstract

Fe³⁺/TiO₂/zeolite Y photocatalyst synthesized by using sonophotodeposition method was compared with photocatalysts prepared by simple photodeposition and sonodeposition methods in order to clarify the role of light irradiation and ultrasounds while they are used simultaneously. To gain an insight into the mechanism of this method a detailed characterization of the photocatalysts was carried out by means of the following techniques: UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, Mössbauer measurements and photocatalytic test reaction. Basing on the results from these techniques the chemical role of light and mainly mechanical role of ultrasound were observed. The selective photocatalytic oxidation of benzyl alcohol into benzaldehyde in liquid phase was a test reaction verifying the utility of the prepared materials. The best photocatalytic efficiency in this reaction was performed by photocatalyst synthesized using compilation of ultrasound energy with photoexcitation.

Keywords: Fe(3+)/TiO(2)/Zeolite Y photocatalyst; Light irradiation; Selective benzyl alcohol photooxidation; Sonophotodeposition; Ultrasounds.