Rational design of porous binary Pt-based nanodendrites as efficient catalysts for direct glucose fuel cells over a wide pH range
الملخص
The development of porous bi-metallic Pt-based nanocrystals (NCs) as efficient catalysts for the glucose oxidation reaction (GOR) over a wide pH range is still a grand challenge. Triggered by this challenge, we report the controlled synthesis of porous binary PtPd, PtCu, AuPt, and PtNi NCs with open dendritic frames as efficient catalysts for GOR. This was achieved by one-step reduction of their precursors in aqueous solutions of polyvinylpyrrolidone (PVP) under ultrasonic treatment at room temperature. Intriguingly, the porous AuPt and PtPd NCs exhibited the utmost enhancement in GOR activity relative to PtCu, PtNi, and commercial Pt/C catalysts under different pH conditions, which is ascribed to their porous structure and composition. Furthermore, the composition and synergetic effects of the binary metals plausibly generate an activity relationship that tune their catalytic activity and stability in different electrolytes. The Royal Society of Chemistry 2017.
المجموعات
- الكيمياء وعلوم الأرض [551 items ]
وثائق ذات صلة
عرض الوثائق المتصلة بواسطة: العنوان، المؤلف، المنشئ والموضوع.
-
PdZn nanoparticle electrocatalysts synthesized by solution combustion for methanol oxidation reaction in an alkaline medium
Matin M.A.; Kumar A.; Bhosale R.R.; Saleh Saad M.A.H.; Almomani F.A.; Al-Marri M.J.... more authors ... less authors ( Royal Society of Chemistry , 2017 , Article)Herein, we report the synthesis of PdZn nanoparticle (NP) electrocatalysts for the methanol oxidation reaction (MOR). The PdZn NPs were synthesized by solution combustion synthesis in the presence of Pd(NO3)2·xH2O, ... -
Self-standing foam-like Pd-based alloys nanostructures for efficient electrocatalytic ethanol oxidation
Adewale K., Ipadeola; Abdelgawad, Ahmed; Salah, Belal; Ghanem, Alaa; Chitt, Mira; Abdullah, Aboubakr M.; Eid, Kamel... more authors ... less authors ( Elsevier , 2023 , Article)In this work, self-standing binary porous PdM (M = Ni, Fe and Co) foam-like nanostructures are rationally designed by a rapid and one-step aqueous-solution method, including ice co-reduction of metal precursors using sodium ... -
Germanium Oxide/germanium/ reduced Graphene (GeO2/Ge/r-GO) Hybrid Composite Anodes for Lithium-ion Batteries: Effect of Ge loading on Electrochemical Performance
Arro, Christian; Mohamed, Assem; Bensalah, Nasr ( Qatar University Press , 2021 , Poster)Hybrid composites between Germanium (Ge) and carbonaceous materials are promising anode materials for Li-ion batteries (LIBs). The mitigation of reduced cycling ability and rate capability allows for the unhindered benefit ...