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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...

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Autores principales: do Nascimento, Jéssica Rabelo, D’Oliveira, Monique Ribeiro, Veiga, Amanda Garcez, Chagas, Carlos Alberto, Schmal, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
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.
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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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