Quantum dot (QD)-decorated semiconductor micro- and nanoparticles are a new class of functional nanomaterials that have attracted considerable interest for their unique structural, optical and electronic properties that result from the large surface-to-volume ratio and the quantum confinement effect. In addition, because of QDs' excellent light-harvesting capacity, unique photoinduced electron transfer, and up-conversion behaviour, semiconductor nanoparticles decorated with quantum dots have been used widely in photocatalytic applications for the degradation of organic pollutants in both the gas and aqueous phases. This review is a comprehensive overview of the recent progress in synthesis methods for quantum dots and quantum dot-decorated semiconductor composites with an emphasis on their composition, morphology and optical behaviour. Furthermore, various approaches used for the preparation of QD-based composites are discussed in detail with respect to visible and UV light-induced photoactivity. Finally, an outlook on future development is proposed with the goal of overcoming challenges and stimulating further research into this promising field.

量子点（QD）装饰的半导体微米和纳米颗粒是一类新型的功能纳米材料，由于其独特的结构，光学和电子特性而引起了人们的极大兴趣，这种独特的结构，光学和电子特性是由大的表面体积比和量子限制效应产生的。此外，由于量子点具有出色的光收集能力，独特的光致电子转移和上转换行为，因此，用量子点修饰的半导体纳米颗粒已广泛用于光催化应用中，以降解气相和水相中的有机污染物。 。这篇综述是对量子点和量子点修饰的半导体复合材料合成方法的最新进展的全面综述，重点是它们的组成，形态和光学行为。此外，关于可见光和紫外线诱导的光活性，详细讨论了用于制备基于QD的复合材料的各种方法。最后，提出了对未来发展的展望，其目标是克服挑战，并激发对该领域充满希望的领域的进一步研究。