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Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes

[Image: see text] The overlooked role of reactive oxygen species (ROS), formed and stabilized on the surface of Nb(2)O(5) after H(2)O(2) treatment, was investigated in the adsorption and degradation of ciprofloxacin (CIP), a model antibiotic. The contribution of ROS to the elimination of CIP was ass...

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Autores principales: Wolski, Lukasz, Sobańska, Kamila, Muńko, Malwina, Czerniak, Adrian, Pietrzyk, Piotr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9305982/
https://www.ncbi.nlm.nih.gov/pubmed/35816763
http://dx.doi.org/10.1021/acsami.2c04743
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author Wolski, Lukasz
Sobańska, Kamila
Muńko, Malwina
Czerniak, Adrian
Pietrzyk, Piotr
author_facet Wolski, Lukasz
Sobańska, Kamila
Muńko, Malwina
Czerniak, Adrian
Pietrzyk, Piotr
author_sort Wolski, Lukasz
collection PubMed
description [Image: see text] The overlooked role of reactive oxygen species (ROS), formed and stabilized on the surface of Nb(2)O(5) after H(2)O(2) treatment, was investigated in the adsorption and degradation of ciprofloxacin (CIP), a model antibiotic. The contribution of ROS to the elimination of CIP was assessed by using different niobia-based materials in which ROS were formed in situ or ex situ. The formation of ROS was confirmed by electron paramagnetic resonance (EPR) and Raman spectroscopy. The modification of the niobia surface charge by ROS was monitored with zeta potential measurements. The kinetics of CIP removal was followed by UV–vis spectroscopy, while identification of CIP degradation products and evaluation of their cytotoxicity were obtained with liquid chromatography–mass spectrometry (LC-MS) and microbiological studies, respectively. Superoxo and peroxo species were found to significantly improve the efficiency of CIP adsorption on Nb(2)O(5) by modifying its surface charge. At the same time, it was found that improved removal of CIP in the dark and in the presence of H(2)O(2) was mainly determined by the adsorption process. The enhanced adsorption was confirmed by infrared spectroscopy (IR), total organic carbon measurements (TOC), and elemental analysis. Efficient chemical degradation of adsorbed CIP was observed upon exposure of the Nb(2)O(5)/H(2)O(2) system to UV light. Therefore, niobia is a promising inorganic adsorbent that exhibits enhanced sorption capacity toward CIP in the presence of H(2)O(2) under dark conditions and can be easily regenerated in an environmentally benign way by irradiation with UV light.
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spelling pubmed-93059822022-07-23 Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes Wolski, Lukasz Sobańska, Kamila Muńko, Malwina Czerniak, Adrian Pietrzyk, Piotr ACS Appl Mater Interfaces [Image: see text] The overlooked role of reactive oxygen species (ROS), formed and stabilized on the surface of Nb(2)O(5) after H(2)O(2) treatment, was investigated in the adsorption and degradation of ciprofloxacin (CIP), a model antibiotic. The contribution of ROS to the elimination of CIP was assessed by using different niobia-based materials in which ROS were formed in situ or ex situ. The formation of ROS was confirmed by electron paramagnetic resonance (EPR) and Raman spectroscopy. The modification of the niobia surface charge by ROS was monitored with zeta potential measurements. The kinetics of CIP removal was followed by UV–vis spectroscopy, while identification of CIP degradation products and evaluation of their cytotoxicity were obtained with liquid chromatography–mass spectrometry (LC-MS) and microbiological studies, respectively. Superoxo and peroxo species were found to significantly improve the efficiency of CIP adsorption on Nb(2)O(5) by modifying its surface charge. At the same time, it was found that improved removal of CIP in the dark and in the presence of H(2)O(2) was mainly determined by the adsorption process. The enhanced adsorption was confirmed by infrared spectroscopy (IR), total organic carbon measurements (TOC), and elemental analysis. Efficient chemical degradation of adsorbed CIP was observed upon exposure of the Nb(2)O(5)/H(2)O(2) system to UV light. Therefore, niobia is a promising inorganic adsorbent that exhibits enhanced sorption capacity toward CIP in the presence of H(2)O(2) under dark conditions and can be easily regenerated in an environmentally benign way by irradiation with UV light. American Chemical Society 2022-07-11 2022-07-20 /pmc/articles/PMC9305982/ /pubmed/35816763 http://dx.doi.org/10.1021/acsami.2c04743 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Wolski, Lukasz
Sobańska, Kamila
Muńko, Malwina
Czerniak, Adrian
Pietrzyk, Piotr
Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes
title Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes
title_full Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes
title_fullStr Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes
title_full_unstemmed Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes
title_short Unraveling the Origin of Enhanced Activity of the Nb(2)O(5)/H(2)O(2) System in the Elimination of Ciprofloxacin: Insights into the Role of Reactive Oxygen Species in Interface Processes
title_sort unraveling the origin of enhanced activity of the nb(2)o(5)/h(2)o(2) system in the elimination of ciprofloxacin: insights into the role of reactive oxygen species in interface processes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9305982/
https://www.ncbi.nlm.nih.gov/pubmed/35816763
http://dx.doi.org/10.1021/acsami.2c04743
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