Advances in the preparation of metal and compound quantum dots by liquid phase ultrasonic method
Quantum Dots(QDs)are zero-dimensional nanomaterials with dimensions less than or close to the exciton Bohr radius.With the development of nanotechnology,metal sulfide QDs have attracted wide attention due to their u-nique optical,electrical and magnetic properties,which can be classified into transition metal-disulfide QDs(TMD QDs),Ⅱ-Ⅵ QDs and Ⅳ-Ⅵ QDs.The ultrasonic method for the preparation of QDs has the advantages of high effi-ciency,environmental protection,easy control and scalability,and has gradually become one of the important tech-niques for the preparation of metal sulfide QDs.Metal sulfide QDs have excellent optoelectronic properties that are dif-ferent from those of traditional bulk materials,and their superior and unique properties have led to in-depth research and applications in more fields in recent years,such as optoelectronic devices,bio-imaging,and photocatalysis.In this paper,an overview of the preparation of different metal sulfide QDs by ultrasonication is reviewed,and their properties and applications are summarized and concluded.Finally,an outlook on the preparation of metal sulfide quantum dots by ultrasonication is given.
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