Figure 5.

a Zn(OH)2 coated with a layer of ZnS, b core/shell structure after reacted with ammonia for 10 min, c low-magnification SEM image and d TEM image of hollow ZnS octahedra. e XRD patterns of the products generated during the process, f PL spectrum of ZnS shell obtained under an ultraviolet excitation at 350 nm

Wu et al. Nanoscale Research Letters 2010 5:1779-1787   doi:10.1007/s11671-010-9711-1