| Autor: |
Manziek, L., Langenmayr, E., Lamola, A., Gallagher, M., Brese, N., Annan, N. |
| Zdroj: |
Chemistry of Materials; October 19, 1998, Vol. 10 Issue: 10 p3101-3108, 8p |
| Abstrakt: |
Cross-linked acrylic emulsion polymers are prepared from ethyl acrylate, methacrylic acid, and allyl methacrylate in aqueous media. The carboxylate groups on these polymers readily form ionic complexes with cation species. These cation-loaded polymers can be burned in air to yield pure oxides at temperatures as low as 150 °C. In an analogous fashion, commercially available suspension particles composed of styrene and divinylbenzene can be functionalized by reacting with sulfuric acid. The resultant sulfonic groups have a different selectivity for cation species. This novel synthetic technique may be used with most metallic elements, and it is demonstrated here for the formation of ZrO2, CeO2, LiMn2O4, and Ba2YCu3O7, as well as catalysts in the Au/Pt and Pt/CeO2 systems. The rapid, intimate mixing of metal ions results in low formation temperatures of nanosized materials, and the myriad of potential processing techniques enables isolation of inorganic oxide powders, precipitation of isolated inorganic clusters within a polymer matrix, and the coating of substrates with nanoparticulate inorganic materials. |
| Databáze: |
Supplemental Index |
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