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Synthesis of Reduced Graphene Oxide as a Support for Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction by CO
[Image: see text] Copper and palladium/copper nanoparticles supported on reduced graphene oxide catalysts were synthesized and evaluated for the selective NO reduction by CO. The catalysts were characterized by XRD, nitrogen adsorption–desorption, TGA, XPS, TPR, in situ XRD, STEM, and HRTEM. The STE...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7557228/ https://www.ncbi.nlm.nih.gov/pubmed/33073083 http://dx.doi.org/10.1021/acsomega.0c02417 |
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author | do Nascimento, Jéssica Rabelo D’Oliveira, Monique Ribeiro Veiga, Amanda Garcez Chagas, Carlos Alberto Schmal, Martin |
author_facet | do Nascimento, Jéssica Rabelo D’Oliveira, Monique Ribeiro Veiga, Amanda Garcez Chagas, Carlos Alberto Schmal, Martin |
author_sort | do Nascimento, Jéssica Rabelo |
collection | PubMed |
description | [Image: see text] Copper and palladium/copper nanoparticles supported on reduced graphene oxide catalysts were synthesized and evaluated for the selective NO reduction by CO. The catalysts were characterized by XRD, nitrogen adsorption–desorption, TGA, XPS, TPR, in situ XRD, STEM, and HRTEM. The STEM and HRTEM results showed high metal oxide dispersions on the rGO. XPS results showed the presence of Cu and Pd oxide species. The reduction of copper supported on the rGO occurred in two steps for CuO(x)/rGO(c), while that for CuO(x)-PdO(y)/rGO(c) occurred in one step for temperatures lower than 350 °C. Noteworthy is that the in situ XRD results showed that the rGO structure was not affected after reduction at 350 °C. The in situ XRD of reduction revealed the appearance of new phases for copper during the reduction. The catalysts were evaluated in NO reduction by CO. The tests showed that the reduced catalysts presented high performance with NO conversions and N(2) selectivity above 85% at 350 °C. |
format | Online Article Text |
id | pubmed-7557228 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-75572282020-10-16 Synthesis of Reduced Graphene Oxide as a Support for Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction by CO do Nascimento, Jéssica Rabelo D’Oliveira, Monique Ribeiro Veiga, Amanda Garcez Chagas, Carlos Alberto Schmal, Martin ACS Omega [Image: see text] Copper and palladium/copper nanoparticles supported on reduced graphene oxide catalysts were synthesized and evaluated for the selective NO reduction by CO. The catalysts were characterized by XRD, nitrogen adsorption–desorption, TGA, XPS, TPR, in situ XRD, STEM, and HRTEM. The STEM and HRTEM results showed high metal oxide dispersions on the rGO. XPS results showed the presence of Cu and Pd oxide species. The reduction of copper supported on the rGO occurred in two steps for CuO(x)/rGO(c), while that for CuO(x)-PdO(y)/rGO(c) occurred in one step for temperatures lower than 350 °C. Noteworthy is that the in situ XRD results showed that the rGO structure was not affected after reduction at 350 °C. The in situ XRD of reduction revealed the appearance of new phases for copper during the reduction. The catalysts were evaluated in NO reduction by CO. The tests showed that the reduced catalysts presented high performance with NO conversions and N(2) selectivity above 85% at 350 °C. American Chemical Society 2020-09-30 /pmc/articles/PMC7557228/ /pubmed/33073083 http://dx.doi.org/10.1021/acsomega.0c02417 Text en This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | do Nascimento, Jéssica Rabelo D’Oliveira, Monique Ribeiro Veiga, Amanda Garcez Chagas, Carlos Alberto Schmal, Martin Synthesis of Reduced Graphene Oxide as a Support for Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction by CO |
title | Synthesis of Reduced Graphene Oxide as a Support for
Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction
by CO |
title_full | Synthesis of Reduced Graphene Oxide as a Support for
Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction
by CO |
title_fullStr | Synthesis of Reduced Graphene Oxide as a Support for
Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction
by CO |
title_full_unstemmed | Synthesis of Reduced Graphene Oxide as a Support for
Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction
by CO |
title_short | Synthesis of Reduced Graphene Oxide as a Support for
Nano Copper and Palladium/Copper Catalysts for Selective NO Reduction
by CO |
title_sort | synthesis of reduced graphene oxide as a support for
nano copper and palladium/copper catalysts for selective no reduction
by co |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7557228/ https://www.ncbi.nlm.nih.gov/pubmed/33073083 http://dx.doi.org/10.1021/acsomega.0c02417 |
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