Awakening the oxygen evolution activity of MoS2 by oxophilic-metal induced surface reorganization engineering

Enhanced Activities in Alkaline Hydrogen and Oxygen Evolution Reactions on MoS2 Electrocatalysts by In‐Plane Sulfur Defects Coupled with Transition Metal Doping

“…Similar shifts from the transition metal dopants to MoS 2 are also observed from the Co-S v -MoS 2 and Mn-S v -MoS 2 samples and the large ratios of Co 3+ /Co 2+ and Mn 3+ /Mn 2+ may enhance the OER activity (Figure S7, Supporting Information). [32] X-ray absorption near-edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS) are further carried out to analyze the coordination environment and electronic structure of M-S v -MoS 2 . Figure 3d valance states as a result of the larger electron density around the Mo atoms.…”

“…[ 31 ] Therefore, atomic reconstruction of the MoS 2 basal plane is desirable in order to enhance the water oxidation kinetics and optimize adsorption/desorption of the intermediates, boosting the alkaline HER and OER characteristics. [ 32 ] Theoretical studies have shown that transition metal dopants next to the MoS 2 edge plane can further optimize hydrogen binding on adjacent unsaturated S and Mo atoms via strong electronic coupling. [ 33 ] Moreover, transition metal atoms or clusters anchored on S v modified MoS 2 basal plane are also demonstrated to be the preferred adsorption sites for hydrogen.…”

meta-Position synergistic effect induced by Ni–Mo co-doped WSe2 to enhance the hydrogen evolution reaction

“…Due to the clever synergistic effect between polymetallic compounds that makes their electrocatalytic activity much better than that of monometallic compounds, they have attracted much attention for energy storage applications. [25][26][27][28][29] Meiron et al 30 prepared Mo 1−x W x Se 2 alloy nanoflowers that showed good catalytic activity and low overpotential in both acidic and alkaline solutions compared to pure MoSe 2 and WSe 2 . Based on Gao et al, 31 when studying the synergistic catalysis of multiple transition metals, it is found that the incorporation of Mo reduces the Gibbs free energy of hydrogen adsorption (ΔG H* ), which provides near-optimal adsorption energy for HER intermediates, and promotes the formation of hydrogen intermediates in water splitting and the process of combining them into molecular hydrogen, thereby effectively improving the HER performance.…”

Synergistic catalysis of graphitic carbon nitride supported bimetallic sulfide nanostructures for efficient oxygen generation

“…It has been reported that the presence of M–OH could improve the OER performance of the electrocatalyst. 21…”

“…It has been reported that the presence of M-OH could improve the OER performance of the electrocatalyst. 21 The electrocatalytic OER performance of the samples was recorded by using a typical three-electrode system with 1.0 M KOH as the electrolyte. For comparison purpose, the OER properties of CFP (Fig.…”