Abstract
The development of semiconductor heterojunctions with strong light-response and high charge separation efficiency is highly desired for addressing the global environmental and energy-related concerns. Herein, we present a new type of 0D/2D phase junctions of bismuth molybadates Bi4MoO9 quantum dots (QDs)/Bi2MoO6 nanosheets (NSs) to boost the interfacial charge transfer and the electron conductivity for excellent visible-light-driven photocatalytic activity. Photocurrent response and Mott-Schottky plot demonstrate that the strong coupling between 0D Bi4MoO9 QDs and 2D Bi2MoO6 NSs via phase heterojunctions could effectively tune the semiconductor work function for reducing the interfacial Schottky barrier by 0.05 eV, which greatly reduced the effective charge-transfer length and increases the number of photo-excited electrons in conduction band of Bi4MoO9 QDs. Hence, the as-synthesized 0D/2D phase junctions of bismuth molybadates achieves an excellent photocatalytic degradation activity of RhB under visible...
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