Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.apcatb.2023.122439 http://hdl.handle.net/11449/248383 |
Resumo: | Nanometric MnOOH compound was synthesized by a green approach, characterized, and used to remove ciprofloxacin (CIP) antibiotic by in situ chemical oxidation using peroxymonosulfate (PMS). The effects of varying concentrations of MnOOH, PMS and pH, on morphological, structural, chemical, and electrochemical changes were studied during and after the experiments. The CIP molecule was completely oxidized and partially mineralized (>60%) after 6 h under acidic conditions. The mechanism of CIP degradation was induced by PMS activated oxidants (HO• and 1O2) and, to a lesser extent, directly on the surface of MnOOH. The latter process was evidenced by transmission electron microscopy showing the formation of an amorphous shell (MnO2) over MnOOH crystallites, as verified using X-ray photoelectron spectroscopy and the subsequent increase of the charge transfer resistance that hindered a further electron transfer to the PMS oxidant. Such behavior is recoverable when using a freshly prepared PMS solution. |
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Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfateAdvanced oxidation processEmerging contaminantsHeterogeneous catalysisHydroxyl radicalsPMS induced Mn(IV) reductionNanometric MnOOH compound was synthesized by a green approach, characterized, and used to remove ciprofloxacin (CIP) antibiotic by in situ chemical oxidation using peroxymonosulfate (PMS). The effects of varying concentrations of MnOOH, PMS and pH, on morphological, structural, chemical, and electrochemical changes were studied during and after the experiments. The CIP molecule was completely oxidized and partially mineralized (>60%) after 6 h under acidic conditions. The mechanism of CIP degradation was induced by PMS activated oxidants (HO• and 1O2) and, to a lesser extent, directly on the surface of MnOOH. The latter process was evidenced by transmission electron microscopy showing the formation of an amorphous shell (MnO2) over MnOOH crystallites, as verified using X-ray photoelectron spectroscopy and the subsequent increase of the charge transfer resistance that hindered a further electron transfer to the PMS oxidant. Such behavior is recoverable when using a freshly prepared PMS solution.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Financiadora de Estudos e ProjetosFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Federal University of São Carlos (UFSCar) Departament of Chemistry, SPUniversity of São Paulo (USP) São Carlos Institute of Physics Department of Physics and Interdisciplinary Science, SPSão Paulo State University (UNESP) Institute of Chemistry Department of Physical Chemistry, SPSão Paulo State University (UNESP) Institute of Chemistry Department of Physical Chemistry, SPCAPES: 001Financiadora de Estudos e Projetos: 0152/21 - MARTMAFAPESP: 2014/50918-7FAPESP: 2019/07943-4CNPq: 302186/2019-0CNPq: 305943/2020-0CNPq: 307800/2021-0CNPq: 406537/2021-6CNPq: 465357/2014-8Universidade Federal de São Carlos (UFSCar)Universidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Núñez-de la Rosa, YeisonDurango, Luis Guillermo CuadradoForim, Moacir RossiNascimento, Otaciro RangelHammer, Peter [UNESP]Aquino, José M.2023-07-29T13:42:28Z2023-07-29T13:42:28Z2023-06-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.apcatb.2023.122439Applied Catalysis B: Environmental, v. 327.0926-3373http://hdl.handle.net/11449/24838310.1016/j.apcatb.2023.1224392-s2.0-85148371236Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Catalysis B: Environmentalinfo:eu-repo/semantics/openAccess2023-07-29T13:42:28Zoai:repositorio.unesp.br:11449/248383Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:41:20.038278Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
title |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
spellingShingle |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate Núñez-de la Rosa, Yeison Advanced oxidation process Emerging contaminants Heterogeneous catalysis Hydroxyl radicals PMS induced Mn(IV) reduction |
title_short |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
title_full |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
title_fullStr |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
title_full_unstemmed |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
title_sort |
Unraveling the time evolution and post mortem changes of nanometric MnOOH during in situ oxidation of ciprofloxacin by activated peroxymonosulfate |
author |
Núñez-de la Rosa, Yeison |
author_facet |
Núñez-de la Rosa, Yeison Durango, Luis Guillermo Cuadrado Forim, Moacir Rossi Nascimento, Otaciro Rangel Hammer, Peter [UNESP] Aquino, José M. |
author_role |
author |
author2 |
Durango, Luis Guillermo Cuadrado Forim, Moacir Rossi Nascimento, Otaciro Rangel Hammer, Peter [UNESP] Aquino, José M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Núñez-de la Rosa, Yeison Durango, Luis Guillermo Cuadrado Forim, Moacir Rossi Nascimento, Otaciro Rangel Hammer, Peter [UNESP] Aquino, José M. |
dc.subject.por.fl_str_mv |
Advanced oxidation process Emerging contaminants Heterogeneous catalysis Hydroxyl radicals PMS induced Mn(IV) reduction |
topic |
Advanced oxidation process Emerging contaminants Heterogeneous catalysis Hydroxyl radicals PMS induced Mn(IV) reduction |
description |
Nanometric MnOOH compound was synthesized by a green approach, characterized, and used to remove ciprofloxacin (CIP) antibiotic by in situ chemical oxidation using peroxymonosulfate (PMS). The effects of varying concentrations of MnOOH, PMS and pH, on morphological, structural, chemical, and electrochemical changes were studied during and after the experiments. The CIP molecule was completely oxidized and partially mineralized (>60%) after 6 h under acidic conditions. The mechanism of CIP degradation was induced by PMS activated oxidants (HO• and 1O2) and, to a lesser extent, directly on the surface of MnOOH. The latter process was evidenced by transmission electron microscopy showing the formation of an amorphous shell (MnO2) over MnOOH crystallites, as verified using X-ray photoelectron spectroscopy and the subsequent increase of the charge transfer resistance that hindered a further electron transfer to the PMS oxidant. Such behavior is recoverable when using a freshly prepared PMS solution. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:42:28Z 2023-07-29T13:42:28Z 2023-06-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.apcatb.2023.122439 Applied Catalysis B: Environmental, v. 327. 0926-3373 http://hdl.handle.net/11449/248383 10.1016/j.apcatb.2023.122439 2-s2.0-85148371236 |
url |
http://dx.doi.org/10.1016/j.apcatb.2023.122439 http://hdl.handle.net/11449/248383 |
identifier_str_mv |
Applied Catalysis B: Environmental, v. 327. 0926-3373 10.1016/j.apcatb.2023.122439 2-s2.0-85148371236 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Catalysis B: Environmental |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128401866752000 |