Abstract In this work, two Bi-based semiconductors composites was synthesized through the BiVO4 quantum dots (BVO QDs) was grown on the Bi12TiO20 (BTO) via an in-suit growth with the ultrasonic method, which was more stability and evenly dispersed. As expected, the BVO-BTO composites exhibited increased visible-light-driven photocatalytic performance for photo-degradation due to the advantages of BVO QDs. Moreover, the possible mechanism of BVO-BTO composites was studied by trapping experiment, photocurrent, UV–vis and so on. The results demonstrated that the BVO QDs can widen the light response range to visible region and hasten the charge transfer and separation. Thus, the photocatalytic activity was enhanced through the BVO QDs decorated on BTO, which provided a new idea for designing Bi-based materials.

中文翻译：

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BiVO4量子点的Bi基半导体复合材料通过超声内装生长装饰Bi12TiO20以提高光催化性能

摘要 在这项工作中，通过超声波法在Bi12TiO20（BTO）上生长的BiVO4量子点（BVO QDs）合成了两种Bi基半导体复合材料，该复合材料更稳定且分散均匀。正如预期的那样，由于 BVO QD 的优势，BVO-BTO 复合材料表现出更高的可见光驱动光催化性能，用于光降解。此外，通过捕获实验、光电流、UV-vis等研究了BVO-BTO复合材料的可能机理。结果表明，BVO QDs 可以将光响应范围扩大到可见光区域，并加速电荷转移和分离。因此，通过修饰在 BTO 上的 BVO QD 增强了光催化活性，这为设计 Bi 基材料提供了新思路。