Aluminosilicate inorganic polymers (geopolymers) containing rare earth ions: a new class of photoluminescent materials
| Autor: | Joanne J. Rogers, Kenneth J. D. MacKenzie, William J. Trompetter |
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| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Inorganic polymer Materials science Photoluminescence Ion exchange Mechanical Engineering Inorganic chemistry Mineralogy Phosphor 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences X-ray photoelectron spectroscopy chemistry Mechanics of Materials Aluminosilicate Activator (phosphor) General Materials Science 0210 nano-technology |
| Zdroj: | Journal of Materials Science. 52:11370-11382 |
| ISSN: | 1573-4803 0022-2461 |
| Popis: | Chemosynthetic aluminosilicate inorganic polymers exhibiting photoluminescent properties were prepared by introducing rare earth activator ions (Sm3+ or Eu3+) into the aluminosilicate structure by ion exchange. Under ~400 nm excitation, the materials showed the characteristic 4f–4f emission peaks of Sm3+ and Eu3+ ions and also broad emission bands in the blue and green regions that were also exhibited by the unexchanged inorganic polymer host. The host and the corresponding phosphors were characterised by XRD, 27Al and 29Si MAS NMR, PIXE and XPS. The photoluminescence intensities of the aluminosilicate inorganic polymers containing Sm3+ and Eu3+ were considerably enhanced by heating in air at >800 °C. The best phosphors were heated at 1200 °C, forming a mixture of crystalline KAlSi2O6 (leucite) and the residual aluminosilicate inorganic polymer. |
| Databáze: | OpenAIRE |
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