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Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures
Morphologically controlled Pd-based nanocrystals are the most efficient strategies for improving the electrocatalytic ethanol oxidation reaction (EOR) performance; however, their morphological-EOR activity relationship and effect of electrolytes at a wide pH range are still ambiguous. Here, we have...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10360946/ https://www.ncbi.nlm.nih.gov/pubmed/37484255 http://dx.doi.org/10.1016/j.heliyon.2023.e16890 |
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author | Ipadeola, Adewale K. Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel |
author_facet | Ipadeola, Adewale K. Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel |
author_sort | Ipadeola, Adewale K. |
collection | PubMed |
description | Morphologically controlled Pd-based nanocrystals are the most efficient strategies for improving the electrocatalytic ethanol oxidation reaction (EOR) performance; however, their morphological-EOR activity relationship and effect of electrolytes at a wide pH range are still ambiguous. Here, we have synthesized porous self-standing Pd clustered nanospheres (Pd-CNSs) and Pd nanocubes (Pd-NCBs) for the EOR in acidic (H(2)SO(4)), alkaline (KOH), and neutral (NaHCO(3)) electrolytes compared to commercial spherical-like Pd/C catalysts. The fabrication process comprises the ice-cooling reduction of Pd precursor by sodium borohydride (NaBH(4)) and l-ascorbic acid to form Pd-CNSs and Pd-NCBs, respectively. The EOR activity of Pd-CNSs significantly outperformed those of Pd-NCBs, and Pd/C in all electrolytes, but the EOR activity was better in KOH than in H(2)SO(4) and NaHCO(3). This is due to the 3D porous clustered nanospherical morphology that makes Pd active centers more accessible and maximizes their utilization during EOR. The EOR specific/mass activities of Pd-CNSs reached (8.51 mA/cm(2)/2.39 A/mg(Pd)) in KOH, (2.98 mA/cm(2)/0.88 A/mg(Pd)) in H(2)SO(4), and (0.061 mA/cm(2)/0.0083 A/mg(Pd)) in NaHCO(3), in addition to stability after 1000 cycles. This study affirms that porous 3D spherical Pd nanostructures are preferred for the EOR than those of 0D spherical-like and multi-dimensional cube-like nanostructures. |
format | Online Article Text |
id | pubmed-10360946 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-103609462023-07-22 Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures Ipadeola, Adewale K. Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel Heliyon Research Article Morphologically controlled Pd-based nanocrystals are the most efficient strategies for improving the electrocatalytic ethanol oxidation reaction (EOR) performance; however, their morphological-EOR activity relationship and effect of electrolytes at a wide pH range are still ambiguous. Here, we have synthesized porous self-standing Pd clustered nanospheres (Pd-CNSs) and Pd nanocubes (Pd-NCBs) for the EOR in acidic (H(2)SO(4)), alkaline (KOH), and neutral (NaHCO(3)) electrolytes compared to commercial spherical-like Pd/C catalysts. The fabrication process comprises the ice-cooling reduction of Pd precursor by sodium borohydride (NaBH(4)) and l-ascorbic acid to form Pd-CNSs and Pd-NCBs, respectively. The EOR activity of Pd-CNSs significantly outperformed those of Pd-NCBs, and Pd/C in all electrolytes, but the EOR activity was better in KOH than in H(2)SO(4) and NaHCO(3). This is due to the 3D porous clustered nanospherical morphology that makes Pd active centers more accessible and maximizes their utilization during EOR. The EOR specific/mass activities of Pd-CNSs reached (8.51 mA/cm(2)/2.39 A/mg(Pd)) in KOH, (2.98 mA/cm(2)/0.88 A/mg(Pd)) in H(2)SO(4), and (0.061 mA/cm(2)/0.0083 A/mg(Pd)) in NaHCO(3), in addition to stability after 1000 cycles. This study affirms that porous 3D spherical Pd nanostructures are preferred for the EOR than those of 0D spherical-like and multi-dimensional cube-like nanostructures. Elsevier 2023-06-02 /pmc/articles/PMC10360946/ /pubmed/37484255 http://dx.doi.org/10.1016/j.heliyon.2023.e16890 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Ipadeola, Adewale K. Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
title | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
title_full | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
title_fullStr | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
title_full_unstemmed | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
title_short | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
title_sort | unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing pd nanostructures |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10360946/ https://www.ncbi.nlm.nih.gov/pubmed/37484255 http://dx.doi.org/10.1016/j.heliyon.2023.e16890 |
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