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A novel two-dimensional transition metal dichalcogenide as water splitting photocatalyst with excellent performances. | LitMetric

With the rising demand for renewable energy, photocatalysts are considered the most promising solution to harness solar energy, and the search for photocatalysts with excellent performances remains an urgent task. Here, based on density functional theory (DFT), the photocatalytic properties of MoWS are systematically investigated. The MoWS monolayer and bilayer are demonstrated as semiconductors with indirect band gaps of 2.01 and 1.48 eV. Moreover, they exhibit high and anisotropic light absorption coefficients of up to ∼10 cm in the visible-ultraviolet region. The intrinsic band edge positions could fully satisfy the redox potentials of water without any external adjustment. The electron mobility of MoWS monolayer is 557 cm Vs, which is seven times higher than MoS monolayer. Hence, MoWS can be regarded as a promising 2D photocatalyst candidate for water splitting.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9455819PMC
http://dx.doi.org/10.3389/fchem.2022.1003027DOI Listing

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