Abstract
Coupled nanostructures with “spotted” and “core–shell” morphologies have been obtained by a controlled heterogeneous nucleation of cadmium sulfide nanoparticles (CdS-NPs) onto the surface of zinc oxide nanotetrapods (ZnO-TPs). This result has been obtained by means of a modified chemical bath deposition reaction, without the need of any surfactant and surface passivating agents. The coupled nanostructure has been demonstrated to form an active p–n type-II heterojunction, clearly affecting the functional properties of ZnO nanostructures, as in gas-sensing or photocatalysis applications.
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