Structure of polymer intercalated MnPS3 and CdPS3
| Autor: | R.F. Frindt, D. Yang |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Diffraction Nanocomposite Materials science Mechanical Engineering Intercalation (chemistry) Polymer Condensed Matter Physics Crystallography chemistry.chemical_compound chemistry Mechanics of Materials PEG ratio General Materials Science Ethylene glycol Monoclinic crystal system |
| Zdroj: | Journal of Materials Research. 15:2408-2413 |
| ISSN: | 2044-5326 0884-2914 |
| Popis: | Layered MnPS3 and CdPS3 powders were used to prepare M1−xK2xPS3/poly(ethylene glycol) (PEG) and M1−xK2xPS3/poly(vinyl pyrrolidone) (PVP) (M = Cd, Mn) intercalation nanocomposites. The structure of these compounds was studied by x-ray diffraction. The host layers in Cd0.8K0.4PS3 (PEG)2.0 and Mn0.8K0.4PS3(PEG)2.0 nanocomposites were 3-dimensional crystals with a monoclinic unit cell. The in-plane spacings were slightly expanded from original monoclinic MPS3 (0.2% for CdPS3 and 0.5% for MnPS3), while the inter-layer spacing was expanded by 8.87 Å for Cd0.8K0.4PS3(PEG)2.0 and 8.86 Å for Mn0.8K0.4PS3(PEG)2.0. The Cd0.8K0.4PS3(PVP)1.1 and Mn0.8K0.4PS3(PVP)1.1 nanocomposites, on the other hand, had an expanded interlayer spacing of about 30 Å and the diffraction patterns contained only (00l) and (hk0) peaks, and no mixed (hkl) peaks were observed. The (hk0) peaks were 2-dimensional, with strongly asymmetric line shapes, and there was excellent agreement with pattern calculations for single molecular layers. This demonstrated that the host layers in Cd0.8K0.4PS3(PVP)1.1 and Mn0.8K0.4PS3(PVP)1.1 nanocomposites were tubostratically stacked layered systems. |
| Databáze: | OpenAIRE |
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