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...
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2023
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| Online Access: | http://dx.doi.org/10.1016/j.heliyon.2023.e16890 https://www.sciencedirect.com/science/article/pii/S2405844023040975 http://hdl.handle.net/10576/54638 |
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| _version_ | 1857415085146767360 |
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| author | Adewale K., Ipadeola |
| author2 | Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel |
| author2_role | author author author author author author |
| author_facet | Adewale K., Ipadeola Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel |
| author_role | author |
| dc.creator.none.fl_str_mv | Adewale K., Ipadeola Salah, Belal Ghanem, Alaa Ahmadaliev, Doniyorbek Sharaf, Mohammed A. Abdullah, Aboubakr M. Eid, Kamel |
| dc.date.none.fl_str_mv | 2023-06-02 2024-05-05T10:40:52Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.heliyon.2023.e16890 Ipadeola, A. K., Salah, B., Ghanem, A., Ahmadaliev, D., Sharaf, M. A., Abdullah, A. M., & Eid, K. (2023). Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures. Heliyon, 9(6). 2405-8440 https://www.sciencedirect.com/science/article/pii/S2405844023040975 http://hdl.handle.net/10576/54638 6 9 2405-8440 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Pd nanocrystals Pd clustered nanospheres Pd nanocubes Ethanol oxidation The effect of shapes The effect of electrolytes |
| dc.title.none.fl_str_mv | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| 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 (H2SO4), alkaline (KOH), and neutral (NaHCO3) electrolytes compared to commercial spherical-like Pd/C catalysts. The fabrication process comprises the ice-cooling reduction of Pd precursor by sodium borohydride (NaBH4) 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 H2SO4 and NaHCO3. 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/cm2/2.39 A/mgPd) in KOH, (2.98 mA/cm2/0.88 A/mgPd) in H2SO4, and (0.061 mA/cm2/0.0083 A/mgPd) in NaHCO3, 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. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_49bc8a7fe3c5123edd887fc4fd55763c |
| identifier_str_mv | Ipadeola, A. K., Salah, B., Ghanem, A., Ahmadaliev, D., Sharaf, M. A., Abdullah, A. M., & Eid, K. (2023). Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures. Heliyon, 9(6). 2405-8440 6 9 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/54638 |
| publishDate | 2023 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| spelling | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructuresAdewale K., IpadeolaSalah, BelalGhanem, AlaaAhmadaliev, DoniyorbekSharaf, Mohammed A.Abdullah, Aboubakr M.Eid, KamelPd nanocrystalsPd clustered nanospheresPd nanocubesEthanol oxidationThe effect of shapesThe effect of electrolytesMorphologically 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 (H2SO4), alkaline (KOH), and neutral (NaHCO3) electrolytes compared to commercial spherical-like Pd/C catalysts. The fabrication process comprises the ice-cooling reduction of Pd precursor by sodium borohydride (NaBH4) 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 H2SO4 and NaHCO3. 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/cm2/2.39 A/mgPd) in KOH, (2.98 mA/cm2/0.88 A/mgPd) in H2SO4, and (0.061 mA/cm2/0.0083 A/mgPd) in NaHCO3, 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.This work was supported by the Qatar University High Impact Internal Grant (QUHI-CAM-22/23-550) and Qatar National Research Fund (NPRP13S-0117-200095).Elsevier2024-05-05T10:40:52Z2023-06-02Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.heliyon.2023.e16890Ipadeola, A. K., Salah, B., Ghanem, A., Ahmadaliev, D., Sharaf, M. A., Abdullah, A. M., & Eid, K. (2023). Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures. Heliyon, 9(6).2405-8440https://www.sciencedirect.com/science/article/pii/S2405844023040975http://hdl.handle.net/10576/54638692405-8440enhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/546382024-07-23T15:53:37Z |
| spellingShingle | Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures Adewale K., Ipadeola Pd nanocrystals Pd clustered nanospheres Pd nanocubes Ethanol oxidation The effect of shapes The effect of electrolytes |
| status_str | publishedVersion |
| 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 | Pd nanocrystals Pd clustered nanospheres Pd nanocubes Ethanol oxidation The effect of shapes The effect of electrolytes |
| url | http://dx.doi.org/10.1016/j.heliyon.2023.e16890 https://www.sciencedirect.com/science/article/pii/S2405844023040975 http://hdl.handle.net/10576/54638 |