Theoretical evaluation of the surface electrochemistry of perovskites with promising photon absorption properties for solar water splitting
Literature Information
Joseph H. Montoya, Monica Garcia-Mota
In this work, we present first-principles calculations describing the catalytic activity for of a set of photoelectrocatalysts identified as candidates for total water splitting in a previous screening study for bulk stability and bandgap. Our Density Functional Theory (DFT) calculations of the intermediate energetics for hydrogen evolution and oxygen evolution suggest that none of the proposed materials has the ideal combination of bandgap and surface chemical properties that should allow for total water splitting in a single material. This result suggests that co-catalysts are necessary to overcome the kinetic limitations of the both reactions, although some materials may catalyze one half-reaction, as has been observed in experiment.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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