Molybdenum and cobalt co-doped VC nanoparticles encapsulated in nanocarbon as efficient electrocatalysts for the hydrogen evolution reaction

Abstract

Molybdenum and cobalt co-doped VC nanoparticles encapsulated in nanocarbon (Mo, Co-VC@C) are successfully synthesized via a one-pot calcination route, exhibiting excellent electrocatalytic HER performance.

Defective silicotungstic acid-loaded magnetic floral N-doped carbon microspheres for ultra-fast oxidative desulfurization of high sulfur liquid fuels

“…The peak at 291.4 eV corresponds to the O–CO bonds. 60,61 The high-resolution O1s spectrum given in Fig. 4c can be fitted into four peaks at 530.7 eV, 531.8 eV, 532.8 eV, and 534.0 eV corresponding to O–W–O linkage, oxygen vacancy (O v ), Si–O and O–C bonds, respectively.…”

“…The peak at 291.4 eV corresponds to the O-CvO bonds. 60,61 Fig. 3 (a-c) SEM images of γ-Fe 2 O 3 @NC@SiW 12 -300 at different magnifications; (d) SEM image and elemental mapping images of C, N, W, Fe, Si, and O; and (e) EDX spectra of γ-Fe 2 O 3 @NC@SiW 12 -300.…”

Dual doping: An emerging strategy to construct efficient metal catalysts for water electrolysis

“…111 The intrinsic activity of metal pnictides/carbides can be significantly improved by dual cation doping. 41,73,112 Generally, the introduction of cations can regulate catalysts' electronic structures, improve electrical conductivity, and offer additional active sites. In 2022, Liu and coauthors developed a Ni/Mn co-doped FeP with an etchingdepositing-phosphorization method.…”

“…Metal pnictides (nitrides and phosphides) and carbides are extensively used as electrocatalysts for water splitting because of their high electrical conductivity, flexible electronic structures, and good stability 111 . The intrinsic activity of metal pnictides/carbides can be significantly improved by dual cation doping 41,73,112 . Generally, the introduction of cations can regulate catalysts' electronic structures, improve electrical conductivity, and offer additional active sites.…”

Ni and VN Nanoparticles Supported on N-Doped Carbon Layer Containing Ni Single Atoms as Electrocatalyst for the Hydrogen Evolution Reaction

“…However, the 3d orbitals of V are in an electron-deficient state, and the ability to adsorb electrons is weak. , Therefore, combining VN with Ni, which has abundant 3d orbital electrons, can induce 3d orbital electron complementarity, such that the electron density between Ni and V is in equilibrium, which regulates the adsorption/desorption of the hydrogen to fulfill the Sabatier principle. , In recent years, researchers have anchored nanoparticles or single atom active phases on N-doped carbon-based material substrates (e.g., carbon nanotubes, graphene, etc. ), which increases simultaneously not only the number of electrocatalytic active centers but also the electrical conductivity for the catalytic material and is an effective approach to improve electrocatalytic performance. − …”