Fig. 6From: Ion exchange: an advanced synthetic method for complex nanoparticles(Reprinted with permission from American Chemical Society [88])a An illustration of the cation exchange reaction of Cu1.81S into dual interface heterostructure particles with ZnS. b Transmission electron microscopy images showing the morphological change from the initial Cu1.81S NPs into ZnS with a Cu1.81S thin diskBack to article page