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المؤلفAdewale K., Ipadeola
المؤلفSalah, Belal
المؤلفGhanem, Alaa
المؤلفAhmadaliev, Doniyorbek
المؤلفSharaf, Mohammed A.
المؤلفAbdullah, Aboubakr M.
المؤلفEid, Kamel
تاريخ الإتاحة2024-05-05T10:40:52Z
تاريخ النشر2023-06-02
اسم المنشورHeliyon
المعرّفhttp://dx.doi.org/10.1016/j.heliyon.2023.e16890
الاقتباسIpadeola, 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).
الرقم المعياري الدولي للكتاب2405-8440
معرّف المصادر الموحدhttps://www.sciencedirect.com/science/article/pii/S2405844023040975
معرّف المصادر الموحدhttp://hdl.handle.net/10576/54638
الملخصMorphologically 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.
راعي المشروعThis work was supported by the Qatar University High Impact Internal Grant (QUHI-CAM-22/23-550) and Qatar National Research Fund (NPRP13S-0117-200095).
اللغةen
الناشرElsevier
الموضوعPd nanocrystals
Pd clustered nanospheres
Pd nanocubes
Ethanol oxidation
The effect of shapes
The effect of electrolytes
العنوانUnveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures
النوعArticle
رقم العدد6
رقم المجلد9
Open Access user License http://creativecommons.org/licenses/by/4.0/
ESSN2405-8440
dc.accessType Open Access


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