Preparation and photocatalytic properties of BaZrO3 and SrZrO3 modified with Cu2O/Bi2O3 quantum dots

Magdalena Miodyńska , Beata Bajorowicz , Paweł Mazierski , Wojciech Lisowski , Tomasz Klimczuk , Michał Jerzy Winiarski , Adriana Zaleska-Medynska , Joanna Nadolna

Abstract

In this study, we report a novel method of BaZrO3 and SrZrO3 surface modification by two different types of quantum dots (QDs, Cu2O and Bi2O3), which improved the photocatalytic performance of the obtained materials under UV-Vis light irradiation. Pristine BaZrO3 and SrZrO3 were prepared by the hydrothermal method. The deposition of Cu2O- and Bi2O3-QDs was carried out by chemical reduction. The morphology of the nanoparticles was estimated based on microscopic analysis (SEM, TEM). The perovskite structure and phase composition of polycrystals were confirmed by X-ray powder diffraction analysis (XRD). The elemental surface composition and the chemical character of detected elements were identified by X-ray photoelectron spectroscopy (XPS). The absorption ability and luminescence properties of nanocomposites were investigated by UV–Vis diffuse-reflectance spectroscopy (DRS UV-Vis) and luminescence spectroscopy. The influence of Cu2O/Bi2O3-QDs modification on the photocatalytic activity of BaZrO3 and SrZrO3 was evaluated by the phenol photodegradation process in the liquid phase under UV-Vis and toluene degradation in the gas phase under Vis irradiation. The highest photoactivity under UV-Vis light was observed for BaZrO3/1% Cu2O/33% Bi2O3 and SrZrO3/1% Cu2O/33% Bi2O3 samples. Research also demonstrated that single-type QD deposition (Cu2O or Bi2O3) on the zirconate surface decreases the photoactivity in comparison with pristine zirconates. The mechanism of photocatalytic activity of the obtained nanocomposites was investigated by the formation of hydroxyl radicals under UV-Vis irradiation in the presence of terephthalic acid.
Author Magdalena Miodyńska PFotokatalizy
Magdalena Miodyńska,,
- Laboratory of Photocatalysis
, Beata Bajorowicz PFotokatalizy
Beata Bajorowicz,,
- Laboratory of Photocatalysis
, Paweł Mazierski PFotokatalizy
Paweł Mazierski ,,
- Laboratory of Photocatalysis
, Wojciech Lisowski
Wojciech Lisowski,,
-
, Tomasz Klimczuk
Tomasz Klimczuk,,
-
, Michał Jerzy Winiarski
Michał Jerzy Winiarski,,
-
, Adriana Zaleska-Medynska PFotokatalizy
Adriana Zaleska-Medynska,,
- Laboratory of Photocatalysis
, Joanna Nadolna PFotokatalizy
Joanna Nadolna,,
- Laboratory of Photocatalysis
Other language title versions
Journal seriesSolid State Sciences, ISSN 1293-2558
Issue year2017
Vol74
Pages13-23
Publication size in sheets0.5
Keywords in Englishzirconates, BaZrO3, SrZrO3, photocatalysis, quantum dots modification, Cu2O, Bi2O
DOIDOI:10.1016/j.solidstatesciences.2017.10.003
URL https://doi.org/10.1016/j.solidstatesciences.2017.10.003
Languageen angielski
Score (nominal)25
ScoreMinisterial score = 25.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.811 (2) - 2016=1.894 (5)
Citation count*0
Cite
Share Share



* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back