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المؤلفQingqing, Lu
المؤلفLi, Jiaojiao
المؤلفEid, Kamel
المؤلفGu, Xilei
المؤلفWan, Zhenyu
المؤلفLi, Wenpeng
المؤلفAl-Hajri, Rashid S.
المؤلفAbdullah, Aboubakr M.
تاريخ الإتاحة2022-09-19T08:47:05Z
تاريخ النشر2022-07-01
اسم المنشورJournal of Electroanalytical Chemistry
المعرّفhttp://dx.doi.org/10.1016/j.jelechem.2022.116361
الاقتباسLu, Q., Li, J., Eid, K., Gu, X., Wan, Z., Li, W., ... & Abdullah, A. M. (2022). Facile one-step aqueous-phase synthesis of porous PtBi nanosponges for efficient electrochemical methanol oxidation with a high CO tolerance. Journal of Electroanalytical Chemistry, 916, 116361.‏
الرقم المعياري الدولي للكتاب15726657
معرّف المصادر الموحدhttps://www.sciencedirect.com/science/article/pii/S1572665722003538
معرّف المصادر الموحدhttp://hdl.handle.net/10576/34163
الملخصDeliberate control in the composition and morphology of Pt-based catalysts is an efficient route for enhancing the methanol oxidation reaction (MOR). Herein we developed a facile method for rational one-step aqueous-phase synthesis of PtBi nanosponges with tunable composition, based on the prompt reduction of an aqueous solution of Pt and Bi precursors using NaBH4. Mechanistically, the high-reduction power of NaBH4 formed multiple small colloidal PtBi nanocrystals (NCs), which coalesce together to reduce their interfacial energy resulting in oriented attachment growth. The fabrication process is simple, quick (2 min), productive, and free of surfactants or organic solvents. PtBi nanosponges showed 3D network-like architectures with a rough surface and interconnected pores (mesopore and macropore). The MOR mass (specific) activity of Pt67Bi33, 1.8 A/mgPt (15.4 mA cm−2), outperformed Pt78Bi22, Pt, and Pt/C, by 2.3 (1.2), 4.8 (3.6), and 5.1 (24.7) times, respectively besides greater stability and CO tolerance. This method could be extended to synthesize other binary Pt-based catalysts for various electrocatalytic applications.
اللغةen
الناشرElsevier B.V.
الموضوعBinary PtBi
Porous PtBi nanosponge
Methanol oxidation
CO tolerance
العنوانFacile one-step aqueous-phase synthesis of porous PtBi nanosponges for efficient electrochemical methanol oxidation with a high CO tolerance
النوعArticle
رقم المجلد916
dc.accessType Abstract Only


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