One-step preparation of cobalt-doped NiS@MoS2 core-shell nanorods as bifunctional electrocatalyst for overall water splitting

Modulation of Water Dissociation Kinetics with a “Breathable” Wooden Electrode for Efficient Hydrogen Evolution

“…For the high-resolution XPS spectrum, the peaks at binding energies of 335.4 and 340.7 eV observed in Figure b can be ascribed to metallic palladium (Pd 0 ). The peaks observed at the corresponding higher binding energies of 337.0 and 342.1 eV are related to Pd 2+ , which may be formed by the surface oxidation of the electrocatalyst. − In the high-resolution XPS spectrum of Ni 2p (Figure c), the core-level peaks appeared at binding energies of 856.1 and 873.7 eV, accompanied by two satellite peaks at 861.5 and 879.8 eV, which are attributed to Ni 2p 3/2 and Ni 2p 1/2 of Ni 2+ in NiS. , With respect to the S 2p spectrum (Figure d), the peaks located at 162.4 and 163.6 eV can be assigned to S 2p 1/2 and S 2p 3/2 , respectively, while the peak at 168.6 eV belongs to the S–O species, which is possibly associated with partly oxidized NiS. − Figure e shows that the characteristic peak at 284.5 eV in the C 1s XPS spectrum corresponds to the C=C bond, while the peak at 286.1 eV is attributed to the C–O bond. , The two signal peaks come from the presence of the CW substrate. The O 1s spectrum in Figure f shows two peaks at 531.3 and 532.5 eV, which manifests the presence of metal–O and metal–OH .…”

Defect-rich Fe-doped NiS/MoS2 heterostructured ultrathin nanosheets for efficient overall water splitting

“…Ni( ii ) 2p 3/2 and Ni( ii ) 2p 1/2 peaks are located at 856.8 and 874.4 eV, respectively. 34 The mixed chemical states of Ni provide abundant redox reaction active sites and accelerate electron transfer during electrocatalysis. 35 In addition, Fe doping causes all the Ni peaks to shift toward a lower binding energy, demonstrating that the electron density of Ni atom increases.…”

Tailor‐Engineered 2D Cocatalysts: Harnessing Electron–Hole Redox Center of 2D g‐C3N4 Photocatalysts toward Solar‐to‐Chemical Conversion and Environmental Purification

“…This study demonstrates the prominent role of the non-contact external field to the overall catalytic efficiency, not only limited to thermal energy, but also can be the magnetic and microwave fields, which can introduce extra energy to accelerate the photocatalytic behavior. [260] In retrospect, metal chalcogenides such as MoS 2 [261] and WSe 2 [262] that were initially used as the electrocatalysts were later applied in photocatalytic applications as cocatalysts [263] due to their merit of good electronic behavior that exhibits superior conductivity in electron transfer. [93] In view of this, the present electrocatalysts with outstanding electronic properties offer a good platform for seeking other potential 2D cocatalysts in photocatalytic applications.…”

“…In retrospect, metal chalcogenides such as MoS 2 [ 261 ] and WSe 2 [ 262 ] that were initially used as the electrocatalysts were later applied in photocatalytic applications as cocatalysts [ 263 ] due to their merit of good electronic behavior that exhibits superior conductivity in electron transfer. [ 93 ] In view of this, the present electrocatalysts with outstanding electronic properties offer a good platform for seeking other potential 2D cocatalysts in photocatalytic applications.…”