Strong coupling effect induced surface reconstruction of CeF₃–Ni₃N to form CeF₃–NiOOH for the oxygen evolution reaction

Abstract

Electrocatalytically active interface in a heterostructure is extremely crucial to obtain optimum adsorption energy of intermediates (O*, OH*, and HOO*) and faster electron transfer. Due to the slow kinetics of...

Electronic Reallocation in MOF-Derived Co4N–Ni3N Heterostructure Renders Chlorine-Free Overall Seawater Splitting under Large Current Density

“…Figure b shows hybrid nanoparticles of Co 4 N–Ni 3 N, which are in line with the morphology obtained by SEM analysis. Figure c depicts the HRTEM image of the catalyst where 0.17 nm is the fringe width that corresponds to the (200) plane of cubic Co 4 N (Figure d), and the other 0.203 nm is related to the (111) plane of hexagonal Ni 3 N (Figure e). − We observed the construction of an interface between Co 4 N and Ni 3 N in the HRTEM images. The charge is transferred from the Co 4 N phase to the Ni 3 N phase with the assistance of these heterojunctions.…”

Interfacial Coupling of Graphene with Nickel Nanoparticles for Water Splitting and Urea Oxidation: A Spectroelectrochemical Investigation

“…When considering this aspect, nickel (Ni)-based catalysts exhibit significant promise among the economically viable transition metals owing to the presence of high valence state Ni-intermediates, which play an essential role in both the oxygen evolution reaction (OER) and the urea oxidation reaction (UOR). [6,29,30] Extensive research has demonstrated that Ni and Ni-based compounds undergo oxidation to form nickel's active state (NiOOH) in an alkaline medium, thereby serving as catalysts for the urea oxidation reaction (UOR). [31] Furthermore, Feng et al have discovered that optimizing the ratio of Ni 2 + / Ni 3 + content can maximize the catalytic performance for urea oxidation.…”