Modulation of the morphology and electronic structure of Ni₃S₂ nano-forests via P and Mo co-doping in polyoxometalates to promote the urea oxidation reaction

Abstract

Heazlewoodite nickel sulfide (Ni3S2) is a promising catalyst for urea oxidation reaction (UOR) due to its facile fabrication and low cost. However, the low active sites inhibit the UOR activity...

Enhancing Overall Water Splitting via Anion and Cation Synergistical Modulation in NiS Amorphous Compound

“…Interestingly, this trend is in contrast to the d-band center inclination. This can be explained by the dispersion of the d-band, influenced by the incorporated heteroatoms, which consequently results in a contrary phenomenon wherein the material with a lower 3d band center exhibits a more robust affinity capability. , Significantly, for the rate-determining step (*O → *OOH), the FeNiSP catalyst presents a relatively lower barrier energy (3.46 eV) than that of other NiS-based catalysts (ranging from 2.46 to 3.78 eV), suggesting that the incorporated Fe and P could more efficiently electrolyze the OER. This improvement stems from the synergistic effect of Fe and P on electron modulation with redistribution charge density of Ni and S, thereby resulting in a bolstered reaction kinetics of OER.…”

Modulation Strategies for the Preparation of High‐Performance Catalysts for Urea Oxidation Reaction and Their Applications

“…For this rea-son, Song et al proposed that on the basis of doping high valence elements, doping high electronegative elements to reduce the d-band center can ensure both the active phase and CO 2 desorption. [150] The author doped P element into Mo- [151] The catalyst had strong stability. First, Ni nanoparticles were well confined by NCNT, guaranteeing activity and stability.…”

“…For this reason, Song et al proposed that on the basis of doping high valence elements, doping high electronegative elements to reduce the d‐band center can ensure both the active phase and CO 2 desorption. [ 150 ] The author doped P element into Mo‐Ni 3 S 2 to prepare P‐Mo‐Ni 3 S 2 , and proved that the incorporation of P made the catalyst have lower E ads (urea), 3d orbital, and ICOHP values than Mo‐Ni 3 S 2 , indicating that urea was more easily adsorbed on the surface of P‐Mo‐Ni 3 S 2 . More importantly, P‐Mo‐Ni 3 S 2 had a lower *COO desorption energy than Mo‐Ni 3 S 2 .…”

Exceptional green hydrogen production performance of a ruthenium-modulated nickel selenide

“…This decrease in crystallinity may cause more lattice defects or edges, which is important for increasing the active sites and mass transport during the electrochemical processes. 39,40 The absence of Ru diffraction peaks or Ru compounds may be due to the low loading content of Ru.…”