Growth of MoSe2 electrocatalyst from metallic molybdenum nanoparticles for efficient hydrogen evolution

Iron Phosphide Precatalyst for Electrocatalytic Degradation of Rhodamine B Dye and Removal of Escherichia coli from Simulated Wastewater

“…A Nyquist plot and a discussion of the relevant circuit and its analysis are presented in the supplemental section (Figure S5c). The electrochemically active surface area (ECSA) of the initial Fe 2 P film was determined from the CVs obtained in 1 M KOH (pH 14) (Figure S6) [50]. The calculated ECSA value of 0.6 cm 2 exceeded the 0.3 cm 2 geometric area (assuming a flat surface).…”

Recent advances in molybdenum diselenide-based electrocatalysts: preparation and application in the hydrogen evolution reaction

“…When colloidal molybdenum nanoparticles (Mo NPs) prepared using a wet chemical method were spinning-coated onto graphite substrate and used as Mo precursor, the selenization of Mo NPs at different temperatures generated MoSe 2 film via the CVD approach. 83 MoSe 2 on graphite substrate indicated temperature-dependent morphological changes and unique hexagonal structure with the space group of P 6 3 / mmc . In addition, ultrasmall crystalline MoSe 2 can also be prepared by depositing MoSe 2 on the carbon substrate via the CVD method and used it for HER.…”

“…70 Moreover, MoSe 2 films can also be used as an electrocatalyst for HER. 83,84 More recently, note that MoSe 2 monolayer (ML) grown by molecular beam epitaxy (MBE) on a bilayer of graphene (G) supported on a 6H-SiC single crystal (MoSe 2 /G/SiC) was used as a characteristic HER catalyst to individually detect the catalytic activity of the MoSe 2 basal plane, selenium vacancies, and different point defects produced by the intersections of metallic twin boundaries characterized using electrochemical scanning tunneling microscopy (EC-STM). 134…”

“…MoSe 2 -800 °C indicated a considerable acidic HER activity with an overpotential of 218 mV compared with MoSe 2 -750 °C and 850 °C. 83 A MoSe 2 /rGO-PGM was used as an electrocatalyst for acidic HER. 125 The results indicated a low overpotential of MoSe 2 /rGO-PGM at 10 mA cm −2 was 155 mV, which is lower than that of MoSe 2 (200 mV) on hollow carbon spheres, 177 a considerable overpotential (155 mV) compared to that (160 mV) of few-layered MoSe 2 nanosheets on vertical N-doped 1T–2H MoSe 2 /graphene shell/core nanoflakes, 52 higher than that of CoSe 2 –MoSe 2 /rGO–C 170 and MoSe 2 nanosheets on Ti plate (142, 133 mV), 60 respectively.…”

“…70 Moreover, MoSe 2 films can also be used as an electrocatalyst for HER. 83,84 More recently, note that MoSe 2 monolayer (ML) grown by molecular beam epitaxy (MBE) on a bilayer of graphene (G) supported on a 6H-SiC single crystal (MoSe 2 /G/SiC) was used as a characteristic HER catalyst to individually detect the catalytic activity of the MoSe 2 basal plane, selenium vacancies, and different point defects produced by the intersections of metallic twin boundaries characterized using electrochemical scanning tunneling microscopy (EC-STM). 134 As is known, although MoSe 2 indicated a low electrical conductivity and a limited active site for HER performance, the conductivity of MoSe 2 is higher than that of MoS 2 owing to the substitution of highly conductive Se atoms (≈1 × 10 −3 S m −1 ) with low-conductive S atoms (≈5 × 10 −28 S m −1 ).…”