NiIr-based metal–organic frameworks grown on a nickel foam substrate (NiIr-MOF/NF) are synthesized by a solvothermal method and directly used for urea electro-oxidation.

The realization of water electrolysis on the basis of highly active, cost‐effective electrocatalysts is significant yet challenging for achieving sustainable hydrogen production from water. Herein, N‐doped Ni3S2/N‐doped MoS2 1D hetero‐nanowires supported by Ni foam (N‐Ni3S2/N‐MoS2/NF) are readily synthesized through a chemical transformation strategy by using NiMoO4 nanowire array growth on Ni foam (NiMoO4/NF) as the starting material. With the in situ generation of Ni3S2/MoS2 heterointerfaces within nanowires and the incorporation of N− anions, an extraordinary hydrophilic nature with abundant, well‐exposed active sites and optimal reaction dynamics for both oxidation and reduction of water are obtained. Attributed to these properties, as‐converted N‐Ni3S2/N‐MoS2/NF exhibits highly efficient electrocatalytic activities for both hydrogen and oxygen evolution reactions under alkaline conditions. The superior bifunctional properties of N‐Ni3S2/N‐MoS2/NF enable it to effectively catalyze the overall water‐splitting reaction.

Electrochemical water splitting can providea promising avenue for sustainable hydrogen production. Highly efficient electrocatalysts toward the hydrogen evolution reaction (HER) and oxygen evolution reaction(OER) are extremely important for the practical application of water splitting technology.H erein, ao ne-step annealing strategyi s reported for the fabrication of am etal-organic frameworkderived bifunctionals elf-supportede lectrocatalyst, whichi s composed of two-dimensional N-doped carbon-wrapped Irdoped Ni nanoparticle composites supported on Ni foam

The exploration of highly efficient catalysts for electrochemical hydrogen and oxygen production via water splitting is very significant for providing affordable clean energy and reducing the reliance on conventional fossil fuels. Herein, we develop an efficient method to boost the electrocatalytic performance of Pt mesoporous nanoparticles (Pt MNs) for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) by a facile Ni, P co-incorporation strategy. The co-incorporation of Ni and P atoms in a Pt crystal structure can effectively modify its electronic structure, which contributes to the superior catalytic ability toward HER. We also demonstrate that the as-fabricated PtNiP MNs could occur surface partial oxidation under oxidizing potentials to in situ form OER electroactive oxides/hydroxides species. The unique mesoporous structure and metal−nonmetal ternary alloyed composition make the PtNiP MNs a promising HER−OER bifunctional electrocatalyst for overall water splitting in alkaline media.

Trimetallic PtPdCo mesoporous nanopolyhedra with hollow cavities exhibit excellent electrocatalytic activity and durability towards the methanol oxidation reaction.