Monolayered Ti3C2O hybrid (001) TiO2 (Ti3C2O/(001) TiO2) photocatalyst was synthesized via a facile hydrothermal subsequent annealing method. The Schottky junction was constructed in situ by regulating surface functional groups, exposing highly active facets, and controlling structural dimension. Among the composite, monolayered Ti3C2O nanosheets acted as the electron reservoir to effectively separate the photogenerated electrons/holes. The exposure of the (001) facet largely improved the catalytic activity and surface energy of the TiO2 material. Through the well-planned triple modifications, the highest activity of photocatalytic hydrogen evolution is 13.63 times than the contrast. In this work, excellent photocatalytic material with Schottky junction was prepared by structural modification
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