Surface engineering of PdFe ordered intermetallics for efficient oxygen reduction electrocatalysis

Surface engineering of hierarchical platinum-cobalt nanowires for efficient electrocatalysis

Despite intense research in past decades, the lack of high-performance catalysts for fuel cell reactions remains a challenge in realizing fuel cell technologies for transportation applications. Here we report a facile strategy for synthesizing hierarchical platinum-cobalt nanowires with high-index, platinum-rich facets and ordered intermetallic structure. These structural features enable unprec...

3D graphene preparation via covalent amide functionalization for efficient metal-free electrocatalysis in oxygen reduction

3D and porous reduced graphene oxide (rGO) catalysts have been prepared with sp3-hybridized 1,4-diaminobutane (sp3-DABu, rGO-sp3-rGO) and sp2-hybridized 1,4-diaminobenzene (sp2-DABe, rGO-sp2-rGO) through a covalent amidation and have employed as a metal-free electrocatalyst for oxygen reduction reaction (ORR) in alkaline media. Both compounds have used as a junction between functionalized rGO l...

Electrocatalysis on bimetallic surfaces: modifying catalytic reactivity for oxygen reduction by voltammetric surface dealloying.

The surface electrocatalytic reactivity of noble metals, for instance Pt, has frequently been modified by alloying Pt with less noble metal atoms within the top surface and/or subsurface layer.1,2 Monolayers of pure Pt deposited on top of non-Pt substrates also showed significantly altered surface catalytic reactivity.3 Here, we report a distinctly different synthetic strategy to modify the sur...

Electrodeposition of platinum nanoparticles on reduced graphene oxide as an efficient catalyst for oxygen reduction reaction

Reduced graphene oxide film was synthesized on a glassy carbon electrode by electro reduction of graphene oxide powders in aqueous solution. Then platinum nano particles were deposited on reduced graphene oxide film that was deposited on the glassy carbon electrode via electro reduction of platinum salt. The Physical morphology of the platinum on reduced graphene oxide film was evaluated by sca...

Oxygen Reduction Electrocatalysis by Matthew Sherman Thorum Dissertation