RT journal article
T1 MOF-derived PdMn and PdCo bimetallic systems as bifunctional electrocatalysts for overall water splitting
A1 Martínez, Jordán Santiago
A1 Márquez, Inmaculada
A1 Mazarío, Jaime
A1 Lopes, Christian Wittee
A1 Cerezo Navarrete, Christian
A1 Egea, Gonzalo
A1 Agostini, Giovanni
A1 Villalobos Portillo, Eduardo
A1 Bazta, Otman
A1 Trasobares Llorente, Susana
A1 Calvino Gámez, José Juan
A1 Calvente, Juan José
A1 Olloqui Sariego, José Luis
A1 Oña Burgos, Pascual
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 MOF-Derived
K1 Bimetallic nanoparticles
K1 Nanomaterials characterization
K1 Electrocatalytic water splitting
K1 Bifunctional electrocatalyst
AB Bimetallic Metalorganic Framework (MOF)-derived PdCo and PdMn nanoparticles have been shown to be excellent bifunctional electrocatalysts for overall electrocatalytic alkaline water splitting. Through an innovative strategy combining a soft chemical (Q) transformation followed by pyrolysis (T) of PdCo-MOF and PdMn-MOF precursors, well-defined and uniformly distributed nanoparticles supported on N-doped graphitic carbon were synthesized (PdCo-QT and PdMn-QT, respectively). The influence of the first row transition metal into the bimetallic nanoparticles on the electrocatalytic activity for both electrocatalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) was assessed. Comprehensive characterization using TEM/STEM, PXRD, Raman, XAS and XPS revealed the ultimate structural and compositional features of the synthesized materials. Notably, the bimetallic PdCo-based catalyst demonstrated the best electrocatalytic performance, exhibiting the lowest Tafel slopes for both HER and OER processes, along with superior thermodynamic and kinetic metrics compared to the bimetallic PdMn and monometallic Pd nanoparticles. The exceptional catalytic activity of the PdCo-QT electrode competes with that of benchmark materials, attributed to a synergistic effect between Pd and the secondary metal (Co), likely forming Pd–O(OH)–Co active centers. Moreover, operando and after electrocatalysis characterizations of the electrodes validate the remarkable stability and efficiency of PdCo-QT, underscoring its potential for practical water-splitting applications.
PB Elsevier
SN 0360-3199
YR 2026
FD 2026-11
LK http://hdl.handle.net/10498/39502
UL http://hdl.handle.net/10498/39502
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026