Abstract
AbstractRegulating morphology and constructing heterojunctions to enhance the light absorption and boost the separation of electrons and holes are common and effective means to boost the photoelectrochemical (PEC) performances of TiO2 photoanodes. In this study, TiO2 nanoflowers (NFs)/CdS quantum dots (QDs)/MoS2 nanosheets (NSs) hybrids with two type II band alignments were synthesized by facile hydrothermal, successive ionic layer adsorption and reaction, and dipping methods, respectively. The effects of different amount of MoS2 co‐catalysts on CdS decorated TiO2 photoanodes were investigated. TiO2 NFs/CdS QDs/MoS2 NSs hybrids showed dramatically enhanced PEC performance, especially under visible light illumination. The photocurrent density of TiO2 NFs/CdS QDs/MoS2‐50 was more than 10 times higher than that of TiO2 NFs/CdS QDs. This innovative work sheds light on efficiently improving the light absorption by forming heterojunctions and accelerating the electron and hole transfer via specific band engineering design.
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