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Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)

In present work, we examine the photocatalytic properties of S-doped TiO(2) (S1, S2) compared to bare TiO(2) (S0) in present work. The photocatalytic tests were performed in alkaline aqueous solutions (pH = 10) of three differently substituted phenols (phenol (I), 4,4′-isopropylidenebisphenol (II),...

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Autores principales: Kisała, Joanna B., Hörner, Gerald, Barylyak, Adriana, Pogocki, Dariusz, Bobitski, Yaroslav
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8746070/
https://www.ncbi.nlm.nih.gov/pubmed/35009505
http://dx.doi.org/10.3390/ma15010361
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author Kisała, Joanna B.
Hörner, Gerald
Barylyak, Adriana
Pogocki, Dariusz
Bobitski, Yaroslav
author_facet Kisała, Joanna B.
Hörner, Gerald
Barylyak, Adriana
Pogocki, Dariusz
Bobitski, Yaroslav
author_sort Kisała, Joanna B.
collection PubMed
description In present work, we examine the photocatalytic properties of S-doped TiO(2) (S1, S2) compared to bare TiO(2) (S0) in present work. The photocatalytic tests were performed in alkaline aqueous solutions (pH = 10) of three differently substituted phenols (phenol (I), 4,4′-isopropylidenebisphenol (II), and 4,4′-isopropylidenebis(2,6-dibromophenol) (III)). The activity of the catalysts was evaluated by monitoring I, II, III degradation in the reaction mixture. The physicochemical properties (particle size, ζ-potential, E(bg), Eu, E(0)(cb), E(0)(vb), σ(o), K(L)) of the catalysts were established, and we demonstrated their influence on degradation reaction kinetics. Substrate degradation rates are consistent with first-order kinetics. The apparent conversion constants of the tested compounds (k(app)) in all cases reveal the sulfur-loaded catalyst S2 to show the best photocatalytic activity (for compound I and II S1 and S2 are similarly effective). The different efficiency of photocatalytic degradation I, II and III can be explained by the interactions between the catalyst and the substrate solution. The presence of bromine substituents in the benzene ring additionally allows reduction reactions. The yield of bromide ion release in the degradation reaction III corresponds to the Langmuir constant. The mixed oxidation-reduction degradation mechanism results in higher degradation efficiency. In general, the presence of sulfur atoms in the catalyst network improves the degradation efficiency, but too much sulfur is not desired for the reduction pathway.
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spelling pubmed-87460702022-01-11 Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2) Kisała, Joanna B. Hörner, Gerald Barylyak, Adriana Pogocki, Dariusz Bobitski, Yaroslav Materials (Basel) Article In present work, we examine the photocatalytic properties of S-doped TiO(2) (S1, S2) compared to bare TiO(2) (S0) in present work. The photocatalytic tests were performed in alkaline aqueous solutions (pH = 10) of three differently substituted phenols (phenol (I), 4,4′-isopropylidenebisphenol (II), and 4,4′-isopropylidenebis(2,6-dibromophenol) (III)). The activity of the catalysts was evaluated by monitoring I, II, III degradation in the reaction mixture. The physicochemical properties (particle size, ζ-potential, E(bg), Eu, E(0)(cb), E(0)(vb), σ(o), K(L)) of the catalysts were established, and we demonstrated their influence on degradation reaction kinetics. Substrate degradation rates are consistent with first-order kinetics. The apparent conversion constants of the tested compounds (k(app)) in all cases reveal the sulfur-loaded catalyst S2 to show the best photocatalytic activity (for compound I and II S1 and S2 are similarly effective). The different efficiency of photocatalytic degradation I, II and III can be explained by the interactions between the catalyst and the substrate solution. The presence of bromine substituents in the benzene ring additionally allows reduction reactions. The yield of bromide ion release in the degradation reaction III corresponds to the Langmuir constant. The mixed oxidation-reduction degradation mechanism results in higher degradation efficiency. In general, the presence of sulfur atoms in the catalyst network improves the degradation efficiency, but too much sulfur is not desired for the reduction pathway. MDPI 2022-01-04 /pmc/articles/PMC8746070/ /pubmed/35009505 http://dx.doi.org/10.3390/ma15010361 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kisała, Joanna B.
Hörner, Gerald
Barylyak, Adriana
Pogocki, Dariusz
Bobitski, Yaroslav
Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)
title Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)
title_full Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)
title_fullStr Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)
title_full_unstemmed Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)
title_short Photocatalytic Degradation of 4,4′-Isopropylidenebis(2,6-dibromophenol) on Sulfur-Doped Nano TiO(2)
title_sort photocatalytic degradation of 4,4′-isopropylidenebis(2,6-dibromophenol) on sulfur-doped nano tio(2)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8746070/
https://www.ncbi.nlm.nih.gov/pubmed/35009505
http://dx.doi.org/10.3390/ma15010361
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