Facile synthesis of molybdenum carbide nanoparticles in situ decorated on nitrogen-doped porous carbons for hydrogen evolution reaction

Facile synthesis of Mo2C nanoparticles on N-doped carbon nanotubes with enhanced electrocatalytic activity for hydrogen evolution and oxygen reduction reactions

“…10 . For HER, Mo 2 C is the main active species, the H + in the electrolyte (0.5 M H 2 SO 4 ) first accepts an electron to form an adsorbed H ad on the surface of the Mo 2 C, and then continues to accept an electron to combine with H + in the solution to form H 2 and then escapes from the surface of catalyst [20,61] . The presence of CNTs not only enhances the dispersion of Mo 2 C nanoparticles but also facilitates the electron transfer from electrode to Mo 2 C NPs, leading to a synergetic effect between Mo 2 C NPs and CNTs.…”

“…Molybdenum (Mo)based catalysts (e.g., MoS 2 , MoP, Mo 2 C), as earth-abundant and low-cost materials, exhibit high electrocatalytic performance in energy-related conversion processes [12][13][14][15][16] . Among them, molybdenum carbides (e.g., Mo 2 C, MoC) have significant potential to replace noble metal platinum (Pt)-based electrocatalyst due to the similar Fermi-level's D -electron structure [17][18][19][20] . Indeed, molybdenum carbides have been widely exploited as HER catalysts due to the attractive price, good conductivity, and comparable activity [21][22][23] .…”

Molybdenum carbide clusters for thermal conversion of CO2 to CO via reverse water-gas shift reaction

“…However, this high-temperature carbonization method can only yield molybdenum carbide in a micron size together with impurities such as a carbon layer on the surface [38 , 40] . The "soft chemistry" approach is more versatile to prepare nanosized molybdenum carbides, which usually uses solid carbon as the precursor and the reducing agent [41] . This method can lead to molybdenum carbide nanoparticles with a smaller size ( > 2 nm) by controlling the solid-solid diffusion process of carbon [38 , 42] , even though the size distribution is hardly uniform [43] .…”

Mo2N–Ni/NF Heterostructure Boosts Electrocatalytic Hydrogen Evolution with Pt-Like Activity

“…Up to now, various combinations of earth-abundant materials, including nonprecious transition metal (NPTM) alloys, sulfides, phosphides, and carbides, have been frequently reported to take the place of Pt as HER catalysts because of their low price and good performance as hydrogenase-like catalysts. Notably, nickel-based compounds have been some of the most intensely studied catalysts. − Heterostructured electrocatalysts consisting of strongly coupled Ni and other oxides have appeared as promising alternative nonprecious metal based HER catalysts, including NiO/Ni/CNT, Ni/NiO, and Li x NiO/Ni, with exceptional activities (80, 90, and 36 mV at 10 mA cm –2 , respectively) toward the HER in alkaline electrolytes.…”

“…Up to now, various combinations of earth-abundant materials, including nonprecious transition metal (NPTM) alloys, 6 sulfides, 7 phosphides, 8 and carbides, 9 have been frequently reported to take the place of Pt as HER catalysts because of their low price and good performance as hydrogenase-like catalysts. Notably, nickel-based compounds have been some of the most intensely studied catalysts.…”