Shape-Selective Synthesis and Optical Properties of Highly Ordered One-Dimensional ZnS Nanostructures

Controlled fabrication of large-scale ZnS arrays of well-aligned 1D nanostructures is reported, which is carried out via a convenient one-step, wet-chemical approach without using a surfactant or template. Highly oriented ZnS nanowire, nanotube, or nanoribbon arrays can be selectively grown on Zn foil by simply modulating reaction temperature and sulfur concentration. The as-prepared ZnS 1D nanostructures are all single crystalline and have a uniform [0001] preferential growth direction. The growth mechanisms of 1D ZnS nanostructure arrays with different shapes are also discussed on the basis of the thermodynamics and kinetics control of diffusion, nucleation, and growth. Room-temperature luminescence properties of these well-ordered ZnS 1D nanostructure arrays are also studied.