Engineering multiphasic MoSe2/NiSe heterostructure interfaces for superior hydrogen production electrocatalysis

Modulating the Electronic Structure on Cobalt Sites by Compatible Heterojunction Fabrication for Greatly Improved Overall Water/Seawater Electrolysis

“…Figure a shows the XRD patterns of CoSe/MoSe 2 , CoSe, and MoSe 2 , which match that of the standard hexagonal MoSe 2 (JCPDS# 29-0914) and hexagonal CoSe (JCPDS# 89-2004), respectively. Notably, the peak intensity of MoSe 2 in CoSe/MoSe 2 was weak, which may be attributed to its low crystallinity. , To further verify the existence of MoSe 2 in CoSe/MoSe 2 , Raman spectroscopy was applied for investigation (Figures b and S6). The two peaks at around 237 and 287 cm –1 were A 1g and 1 E 2g peaks of MoSe 2 , respectively.…”

“…Notably, the peak intensity of MoSe 2 in CoSe/ MoSe 2 was weak, which may be attributed to its low crystallinity. 15,50 To further verify the existence of MoSe 2 in CoSe/MoSe 2 , Raman spectroscopy was applied for investigation (Figures 4b and S6). The two peaks at around 237 and 287 cm −1 were A 1g and 1 E 2g peaks of MoSe 2 , respectively.…”

Green Electrosynthesis of 5,5′‐Azotetrazolate Energetic Materials Plus Energy‐Efficient Hydrogen Production Using Ruthenium Single‐Atom Catalysts

“…The MoSe 2 is one of the typical HER-active transition metal dichalcogenides (TMD) semiconducting materials because of their intrinsic advantages of remarkable activity, cost-effectiveness, earth abundance, and eco-friendly features. [29] Theoretical calculations reveal that the MoSe 2 showed lower hydrogen adsorption Gibbs free energy due to the more metallic nature of MoSe 2 . [30] The TMD has been widely used as substrates to immobilize single atoms (SAs) in heterogeneous catalysis.…”

Ni2P nanowire arrays grown on Ni foam as an efficient monolithic cocatalyst for visible light dye-sensitized H2 evolution

“…6,7 Apart from precious noble-metal-based catalysts, transition metal-based materials including sulfides, carbides, nitrides, selenides, and phosphides have recently shown great potential as promising catalysts for electrocatalytic and photocatalytic HERs. 8–20 In particular, transition metal phosphides such as NiP x , 21 MoP, 22 CoP, 23,24 FeP, 25 CuP x , 26,27 and their composites 28–30 have been proved to be promising cocatalysts for the photocatalytic HER due to their inherent high HER activity, good electrical conductivity, excellent stability, and earth abundance. Among them, Ni 2 P and its composites with conductive carbons and other metal phosphides have exhibited much superior catalytic HER activity.…”