Abstract
Novel BaMoO4 nestlike nanostructures assembled with single-crystal nanosheets have been successfully synthesized by using PVP (K30) as capping reagents under hydrothermal conditions. Detailed proofs indicated that the process of crystal growth was dominated by a crystallization−dissolution−recrystallization−self-assembly growth mechanism. The morphology of BaMoO4 evolved from several micro-compressed decahedrons to two-dimensional (2-D) nanoplates and to three-dimensional (3-D) nestlike nanostructures. The compressed decahedrons with rough surfaces synthesized in a very short time should have larger numbers of lattice defects which induce its state to be metastable. Room-temperature photoluminescence (PL) spectra also reflected the evolution of intrinsic lattice and morphology. Both the concentration of PVP aqueous solutions and the concentration of initial reagents play important roles in the formation of the BaMoO4 nestlike nanostructure.
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