Preparation and characterization of organic-inorganic poly(ethylene glycol)/WS2 nanocomposite |
| |
Authors: | Bai-Huan Xu Dong-Ya Sun Cong Ding Xue-Zhong Liu Zi-Jing Xiao |
| |
Affiliation: | Institute of Materials Physical Chemistry, Huaqiao University, Quanzhou 362021, PR China |
| |
Abstract: | Layered nanocomposite PEG/WS2, intercalating oligomeric poly(ethylene glycol) (PEG6000) into the tungsten disulfide host galleries, was synthesized using the exfoliation-adsorption technique. X-ray diffraction revealed that the intercalated oligomer within the host galleries is in a double-layer arrangement with an interlayer expansion of about 8.8 Å. The optimum conditions were explored to prepare the single-phase product with a composition of Li0.12(PEG)1.51WS2. Thermal analyses suggested that the resulting material shows good thermal stability, with the decomposition of the interacted oligomeric chains within the disulfide galleries occurring at around 258 °C. Despite high conductivity of the host material, those of the PEG/WS2 nanocomposite were found to be high in the order of 1 × 10−2 S cm−1 at ambient temperature, resulted from the host guest-host charge transfers. |
| |
Keywords: | A. Layered compounds A. Nanostructures B. Intercalation reactions C. X-ray diffraction D. Electrical properties |
本文献已被 ScienceDirect 等数据库收录! |