Preparation and characterization of nano ZnS by ion exchange resin method

Abstract

D113 macroporous ion exchange resins were used as the supplier of Zn2+ ions and the regulator of ZnS morphology to prepare nano ZnS materials. The morphology and structure of the products were researched using the traditional batch method including Na2S concentration, temperature and resin addition time. Some means of characterization, such as SEM, XRD and FT-IR, were adopted well. The results showed that when Na2S concentration was lower for 0.05 mol/L, the product is well dispersed, showing a fine nano-particle size of about 100 nm; and when Na2S concentration was higher for 0.3 mol/L, the products liked a multi-petal flower in bloom with a thickness of less than 100 nm. When the reactive temperature was 30 °C, the characteristic diffraction peak has higher intensity and wider half-peak width. Under the resin addition time of 5 min, the product is mainly needle-like, like a cluster of pine leaves. When the resin addition time reached 20 min, the products showed a flaky structure. FT-IR was positively used to confirm the feasibility of this method.