Highly active TiO2 microspheres formation in the presence of ethylammonium nitrate ionic liquid

Anna Gołąbiewska , Micaela Checa-Suárez , Marta Paszkiewicz-Gawron , Wojciech Lisowski , Edyta Raczuk , Tomasz Klimczuk , Żaneta Polkowska , Ewelina Grabowska , Adriana Zaleska-Medynska , Justyna Łuczak

Abstract

Spherical microparticles of TiO2 were synthesized by the ionic liquid-assisted solvothermal method at different reaction times (3, 6, 12, and 24 h). The properties of the prepared photocatalysts were investigated by means of UV-VIS diffuse-reflectance spectroscopy (DRS), Brunauer–Emmett–Teller (BET) surface area measurements, scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), and X-ray photoelectron spectroscopy (XPS). The results indicated that the efficiency of the phenol degradation was related to the time of the solvothermal synthesis, as determined for the TiO2_EAN(1:1)_24h sample. The microparticles of TiO2_EAN(1:1)_3h that formed during only 3 h of the synthesis time revealed a really high photoactivity under visible irradiation (75%). This value increased to 80% and 82% after 12 h and 24 h, respectively. The photoactivity increase was accompanied by the increase of the specific surface area, thus the poresize as well as the ability to absorb UV-VIS irradiation. The high efficiency of the phenol degradation of the ionic liquid (IL)–TiO2 photocatalysts was ascribed to the interaction between the surface of the TiO2 and ionic liquid components (carbon and nitrogen).
Author Anna Gołąbiewska (FCh / DET / LPh)
Anna Gołąbiewska,,
- Laboratory of Photocatalysis
, Micaela Checa-Suárez (FCh / DET / LPh)
Micaela Checa-Suárez,,
- Laboratory of Photocatalysis
, Marta Paszkiewicz-Gawron (FCh / DET / LPh)
Marta Paszkiewicz-Gawron ,,
- Laboratory of Photocatalysis
, Wojciech Lisowski
Wojciech Lisowski,,
-
, Edyta Raczuk (FCh / DET / LPh)
Edyta Raczuk,,
- Laboratory of Photocatalysis
, Tomasz Klimczuk
Tomasz Klimczuk,,
-
, Żaneta Polkowska
Żaneta Polkowska,,
-
, Ewelina Grabowska (FCh / DET / LPh)
Ewelina Grabowska,,
- Laboratory of Photocatalysis
, Adriana Zaleska-Medynska (FCh / DET / LPh)
Adriana Zaleska-Medynska,,
- Laboratory of Photocatalysis
, Justyna Łuczak
Justyna Łuczak,,
-
Journal seriesCatalysts, ISSN , e-ISSN 2073-4344, (A 30 pkt)
Issue year2018
Vol8
No7
Pages1-17
Publication size in sheets0.8
Keywords in Englishionic liquids; ionic liquid-assisted solvothermal reaction; reaction time; titanium dioxide; heterogeneous photocatalysis; visible light
DOIDOI:10.3390/catal8070279
URL https://doi.org/10.3390/catal8070279
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)30
ScoreMinisterial score = 30.0, 06-08-2018, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 06-08-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 3.082 (2) - 2016=3.947 (5)
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