New ZnS/organic composite nanoribbons: characterization, thermal stability and photoluminescence

摘要

A new inorganic/ organic (I/O) nanocomposite (ZnS/NaSCH2COONa) with a ribbon-like structure was synthesized by using Zn(NO3)(2) (.) 7H(2)O and thioglycolic acid as reactants under hydrothermal conditions at 160 degrees C. SEM, TEM, XRD, XPS, IR and XAFS were used to characterize and analyse the morphology, microstructure and formation mechanism of the new I/O composite material. The ZnS nanocrystals are about 4.5 nm in diameter and distribute in the nanoribbons uniformly. The ZnS/NaSCH2COONa nanoribbons would decompose into nearly monodispersed wurtzite ZnS sphere-like nanostructures with a diameter of about 300 nm through hydrothermal treatment. Photoluminescence (PL) was used to study the optical properties of ZnS/NaSCH2COONa nanoribbons. Compared with the wurtzite ZnS sphere- like nanostructures, the I/O composite nanoribbons presented a greatly enhanced light emission at 425 nm, which indicates their potential applications in luminescence materials.