Abstract
In this work, we presented a facile approach for the preparation of three-dimensional PbS nanoflowers,
which was attributed to the coexistence of two types of amines with different-length alkyl chains and
different steric hindrance. These monodisperse PbS nanoflowers showed small particle sizes (35 nm)
and narrow size distribution (dz9%). On the basis of these nanoflowers, we obtained a series of singlecrystal
hollow PbS nanostructures with tunable morphologies (including sphere, cuboctahedron, cube,
and tube/rod) through elevating reaction temperature and prolonging growth time. It was further
followed by a detailed discussion of the mechanism of morphology evolution, where the
recrystallization and intraparticle ripening made contributions.