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Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion
Carbon monoxide (CO), being a highly toxic gas, bears hazardous effects on human health and contributes majorly to environmental pollution. It is mostly produced by automobile exhausts and incomplete combustion of carbon-containing substances. Thus, the development of catalysts for CO conversion is...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054551/ https://www.ncbi.nlm.nih.gov/pubmed/35516611 http://dx.doi.org/10.1039/d0ra02554b |
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author | Majumder, Deblina Chakraborty, Indranil Mandal, Kalyan |
author_facet | Majumder, Deblina Chakraborty, Indranil Mandal, Kalyan |
author_sort | Majumder, Deblina |
collection | PubMed |
description | Carbon monoxide (CO), being a highly toxic gas, bears hazardous effects on human health and contributes majorly to environmental pollution. It is mostly produced by automobile exhausts and incomplete combustion of carbon-containing substances. Thus, the development of catalysts for CO conversion is highly imperative and has always gained interest for real field applications. Besides the high oxygen storage capacity and facile transitions between oxidation states, the huge abundance of cerium on earth makes CeO(2) a low-cost and highly effective alternative to noble metal catalysts for CO oxidation. The present work delineates the room temperature synthesis of flower-shaped 3D CeO(2) nanostructures using a sonication-assisted simple synthesis method within 2 hours under the pivotal importance of a structure-directing agent, polyvinylpyrrolidone (PVP). The bifunctional contributions of PVP as a surfactant and as a capping agent are discussed with a plausible mechanism. The method leading to the formation of hierarchical CeO(2) nanoflowers provides an appreciable surface area of 132.69 cm(2) g(−1). The morphological and structural characterizations of the catalyst were thoroughly investigated using FESEM, TEM, XRD, UV-visible spectroscopy, photoluminescence spectroscopy, FTIR spectroscopy and X-ray photoelectron spectroscopy. The structural efficacies of flower-like CeO(2) nanostructures have also been correlated to the narrowing of the band gap and the generation of the corresponding oxygen vacancies, resulting in surface catalytic properties towards 80% conversion of CO. |
format | Online Article Text |
id | pubmed-9054551 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90545512022-05-04 Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion Majumder, Deblina Chakraborty, Indranil Mandal, Kalyan RSC Adv Chemistry Carbon monoxide (CO), being a highly toxic gas, bears hazardous effects on human health and contributes majorly to environmental pollution. It is mostly produced by automobile exhausts and incomplete combustion of carbon-containing substances. Thus, the development of catalysts for CO conversion is highly imperative and has always gained interest for real field applications. Besides the high oxygen storage capacity and facile transitions between oxidation states, the huge abundance of cerium on earth makes CeO(2) a low-cost and highly effective alternative to noble metal catalysts for CO oxidation. The present work delineates the room temperature synthesis of flower-shaped 3D CeO(2) nanostructures using a sonication-assisted simple synthesis method within 2 hours under the pivotal importance of a structure-directing agent, polyvinylpyrrolidone (PVP). The bifunctional contributions of PVP as a surfactant and as a capping agent are discussed with a plausible mechanism. The method leading to the formation of hierarchical CeO(2) nanoflowers provides an appreciable surface area of 132.69 cm(2) g(−1). The morphological and structural characterizations of the catalyst were thoroughly investigated using FESEM, TEM, XRD, UV-visible spectroscopy, photoluminescence spectroscopy, FTIR spectroscopy and X-ray photoelectron spectroscopy. The structural efficacies of flower-like CeO(2) nanostructures have also been correlated to the narrowing of the band gap and the generation of the corresponding oxygen vacancies, resulting in surface catalytic properties towards 80% conversion of CO. The Royal Society of Chemistry 2020-06-09 /pmc/articles/PMC9054551/ /pubmed/35516611 http://dx.doi.org/10.1039/d0ra02554b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Majumder, Deblina Chakraborty, Indranil Mandal, Kalyan Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion |
title | Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion |
title_full | Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion |
title_fullStr | Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion |
title_full_unstemmed | Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion |
title_short | Room temperature blooming of CeO(2) 3D nanoflowers under sonication and catalytic efficacy towards CO conversion |
title_sort | room temperature blooming of ceo(2) 3d nanoflowers under sonication and catalytic efficacy towards co conversion |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054551/ https://www.ncbi.nlm.nih.gov/pubmed/35516611 http://dx.doi.org/10.1039/d0ra02554b |
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