Myriophyllum-like hierarchical TiN@Ni₃N nanowire arrays for bifunctional water splitting catalysts

Abstract

A Myriophyllum-like TiN@Ni3N nanowire array was synthesized as an efficient bifunctional hydrogen evolution and oxygen evolution electrocatalyst.

Phosphorus and Fluorine Co‐Doping Induced Enhancement of Oxygen Evolution Reaction in Bimetallic Nitride Nanorods Arrays: Ionic Liquid‐Driven and Mechanism Clarification

“…As observed from the experimental and fitted spectra ( Figure 3a nd Figure www.chemeurj.org of Ni 2 + ,r espectively, [34,35] whicha re accompanied by ac ouple of satellite peaks located at 862.1 eV and 881.0 eV (Figure 3a). [36][37] The peaks of the metallic state forNiinthe NIA catalyst disappeareda fter calcination in air.T he binding energy of the Co 2p 3/2 ( Figure 3b)i nt he NN catalyste xhibits two peaks at about 797.8 eV and 782.3 eV,a ttributed to the 2p 1/2 and 2p 3/2 of Co 2 + ,r espectively,w hereas two satellitep eaks are located at 786.5 eV and 803.7 eV. [36][37] The peaks of the metallic state forNiinthe NIA catalyst disappeareda fter calcination in air.T he binding energy of the Co 2p 3/2 ( Figure 3b)i nt he NN catalyste xhibits two peaks at about 797.8 eV and 782.3 eV,a ttributed to the 2p 1/2 and 2p 3/2 of Co 2 + ,r espectively,w hereas two satellitep eaks are located at 786.5 eV and 803.7 eV.…”

Tailoring the d‐Band Centers Enables Co4N Nanosheets To Be Highly Active for Hydrogen Evolution Catalysis

“…[2b] To this end, exploring earth-abundant and catalytically active non-noble-metal-based catalysts,s uch as transition-metal nitrides, [3] phosphides, [4] sulfides, [5] selenides, [6] and carbides, [7] is highly imperative.Tr ansition-metal nitrides have emerged as an interesting family of HER catalysts,b ecause of their high electrical conductivity and noble-metal-like behavior. [8] Va rious transition-metal nitrides,s uch as MoN, [9] Ni 3 N, [10] WN, [11] and alloyed metal nitrides, [3a, 12] have been reported to be HER catalysts in alkaline media. Fore xample,N i 3 Nn anosheets exhibited an overpotential of 115 mV for HER catalysis at 10 mA cm À2 .…”

“…Tr ansition-metal nitrides have emerged as an interesting family of HER catalysts,b ecause of their high electrical conductivity and noble-metal-like behavior. [8] Va rious transition-metal nitrides,s uch as MoN, [9] Ni 3 N, [10] WN, [11] and alloyed metal nitrides, [3a, 12] have been reported to be HER catalysts in alkaline media. Fore xample,N i 3 Nn anosheets exhibited an overpotential of 115 mV for HER catalysis at 10 mA cm À2 .…”

Tailoring the d‐Band Centers Enables Co4N Nanosheets To Be Highly Active for Hydrogen Evolution Catalysis

“…Herein, we successfully endowC o 4 Nw ith prominent HER catalytic capability by tailoring the positions of the d-band center through transitionmetal doping.T he V-doped Co 4 Nn anosheets displaya n overpotential of 37 mV at 10 mA cm À2 ,w hich is substantially better than Co 4 Na nd even close to the benchmark Pt/C catalysts.X ANES,U PS,a nd DFT calculations consistently reveal the enhanced performance is attributed to the downshift of the d-band center,w hich helps facilitate the Hd esorption. [8] Va rious transition-metal nitrides,s uch as MoN, [9] Ni 3 N, [10] WN, [11] and alloyed metal nitrides, [3a, 12] have been reported to be HER catalysts in alkaline media. [1] Alkaline electrolysis has been viewed as the most feasible way for the industrial production of hydrogen.…”

“…[8] Va rious transition-metal nitrides,s uch as MoN, [9] Ni 3 N, [10] WN, [11] and alloyed metal nitrides, [3a, 12] have been reported to be HER catalysts in alkaline media. [8] Va rious transition-metal nitrides,s uch as MoN, [9] Ni 3 N, [10] WN, [11] and alloyed metal nitrides, [3a, 12] have been reported to be HER catalysts in alkaline media.…”