Photoelectrochemical water splitting to generate H2 and O2 using only photon energy (with no added electrical energy) has been demonstrated with dual n-type-semiconductor (or Z-scheme) systems. Here we investigated two different Z-scheme systems; one is comprised of two cells with the same metal-oxide semiconductor (W- and Mo-doped bismuth vanadate), that is, Pt-W/Mo-BiVO4, and the other is com...

Bismuth vanadate (BiVO4) is a promising photoelectrode material for the oxidation of water, but fundamental studies of this material are lacking. To address this, we report electrical and photoelectrochemical (PEC) properties of BiVO4 single crystals (undoped, 0.6% Mo, and 0.3% W:BiVO4) grown using the floating zone technique. We demonstrate that a small polaron hopping conduction mechanism dom...

• The effect of point defects on the electronic and magnetic properties MoSi 2 N 4 monolayer was investigated. H, O, F atoms are considered as adsorbed atoms; As, Ge, P, O substitutional doped single double vacancies typical defects. H adsorption O/P structures shows reversible n–p conduction type switching. Single Si well Si+N vacancy cases structures, while Mo is a semiconductor. two dimensio...

In this study, we use first-principles calculations to investigate the electronic and structural properties of $\text{Mo}{X}_{2}$ $(X=\text{S}, \mathrm{Se}, \mathrm{Te})$ monolayers doped with substitutional Sb atoms, a central focus on Sb(Mo) substitution. ${\mathrm{MoS}}_{2}$, observe that substitution is energetically favored under S-rich conditions, where ${\mathrm{S}}_{2}$ gaseous phase li...

In this study, we use first-principles calculations to investigate the electronic and structural properties of $\text{Mo}{X}_{2}$ $(X=\text{S}, \mathrm{Se}, \mathrm{Te})$ monolayers doped with substitutional Sb atoms, a central focus on Sb(Mo) substitution. ${\mathrm{MoS}}_{2}$, observe that substitution is energetically favored under S-rich conditions, where ${\mathrm{S}}_{2}$ gaseous phase li...

Thin films of ZnO, Cu-doped Cu2O and binary Cu2O/Cu-doped ZnO p-n heterojunction thin film were prepared tested for their heterogeneous photocatalytic activity in the removal three selected organic dyes: methylene blue (MB), orange (MO) Congo red (CR). The experiments carried out under UV light natural sunlight. synthesis photocatalysts was by an electrochemical deposition method resulting char...

Two-dimensional (2D) transition metal carbides (MXene) process attractive conductivity and abundant surface functional groups, providing immense potential in the field of electromagnetic wave (EMW) absorption. However, high spontaneous aggregation MXene suffer from limited EMW response. Inspired by dielectric-magnetic synergy effect, strategy decorating with magnetic elements is expected to sol...