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...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-06-01
|
| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023040975 |
| _version_ | 1797807186421743616 |
|---|---|
| author | Adewale K. Ipadeola Belal Salah Alaa Ghanem Doniyorbek Ahmadaliev Mohammed A. Sharaf Aboubakr M. Abdullah Kamel Eid |
| author_facet | Adewale K. Ipadeola Belal Salah Alaa Ghanem Doniyorbek Ahmadaliev Mohammed A. Sharaf Aboubakr M. Abdullah Kamel Eid |
| author_sort | Adewale K. Ipadeola |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-13T06:18:47Z |
| format | Article |
| id | doaj.art-8c62e4428f8e431e9ca49461a4fcdd51 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-13T06:18:47Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-8c62e4428f8e431e9ca49461a4fcdd512023-06-10T04:28:11ZengElsevierHeliyon2405-84402023-06-0196e16890Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructuresAdewale K. Ipadeola0Belal Salah1Alaa Ghanem2Doniyorbek Ahmadaliev3Mohammed A. Sharaf4Aboubakr M. Abdullah5Kamel Eid6Center for Advanced Materials, Qatar University, Doha, 2713, Qatar; Gas Processing Center (GPC), College of Engineering, Qatar University, Doha, 2713, QatarCenter for Advanced Materials, Qatar University, Doha, 2713, Qatar; Gas Processing Center (GPC), College of Engineering, Qatar University, Doha, 2713, QatarPVT-Lab, Production Department, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, EgyptDepartment of Chemical & Material Science Engineering of School of Engineering, New Uzbekistan University, Tashkent, 100007, UzbekistanDepartment of Maritime Transportation Management Engineering, Istanbul University-Cerrahpasa, 34320, Avcilar/Istanbul, Turkey; Mericler Inc. Educational Consulting, Esentepe, Yazarlar Sk. No 21, 34381, Sisli/Istanbul, TurkeyCenter for Advanced Materials, Qatar University, Doha, 2713, Qatar; Corresponding author.Gas Processing Center (GPC), College of Engineering, Qatar University, Doha, 2713, Qatar; Corresponding author.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.http://www.sciencedirect.com/science/article/pii/S2405844023040975Pd nanocrystalsPd clustered nanospheresPd nanocubesEthanol oxidationThe effect of shapesThe effect of electrolytes |
| spellingShingle | Adewale K. Ipadeola Belal Salah Alaa Ghanem Doniyorbek Ahmadaliev Mohammed A. Sharaf Aboubakr M. Abdullah Kamel Eid Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures Heliyon Pd nanocrystals Pd clustered nanospheres Pd nanocubes Ethanol oxidation The effect of shapes The effect of electrolytes |
| 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://www.sciencedirect.com/science/article/pii/S2405844023040975 |
| work_keys_str_mv | AT adewalekipadeola unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures AT belalsalah unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures AT alaaghanem unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures AT doniyorbekahmadaliev unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures AT mohammedasharaf unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures AT aboubakrmabdullah unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures AT kameleid unveilingtheeffectofshapesandelectrolytesontheelectrocatalyticethanoloxidationactivityofselfstandingpdnanostructures |