Project information
Sonochemical Synthesis of Oxide and Phosphate Materials
- Project Identification
- GA203/04/0296
- Project Period
- 1/2004 - 12/2006
- Investor / Pogramme / Project type
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Czech Science Foundation
- Standard Projects
- MU Faculty or unit
- Faculty of Science
- Keywords
- ultrasound; sonochemistry; oxides; phosphates; materials; nonhydrolytic methods
In this project we want to pursue three major directions of ultrasound-driven material synthesis. The first is the nonaqueous sonochemical synthesis of binary and ternary oxides starting from homo- and heterometallic alkoxides, acetates, and diketonates. We will also synthesize more elaborate precuror molecules mimicking building units of solid networks, such as polyhedral metallosilanolates, and examine their sonochemical conversion to solid products. The second area of our interest is the preparation of metallophosphate compounds by ultrasound-activated nonhydrolytic reactions of phosphoric acid esters with metal amides, alkyls and halides. In addition, cyclic and polyhedral metallophosphonates will be used as precursors. In the third part we will examine the possibility to control the outcome of the sonochemical reaction by chemical means and prepare several different materials from one precursor by changing the reaction conditions and partners. As a model compound we chose copper(II) hexafluoroacetylacetonate and we will attempt to prepare metallic Cu, CuO, CuS and Cu3N powders. In all three areas of our interest, we will study not only the chemical composition and morphology of solid products resulting from the sonochemical reaction but also the organic byproducts left behind in the reaction solution. From this knowledge we will attempt to deduce the early steps of the conversion mechanism from the precursors to the solid materials.
Publications
Total number of publications: 39
2005
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Sol-Gel Preparation of Y3Sc5-xGaxO12 (YSGG): phase formation problems
Chemija 2005, year: 2005
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Sonochemical synthesis of metal oxides and phosphates
Pacifichem 2005 - ENVR 531, year: 2005
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Sonochemická příprava oxidů železa a kobaltu
ChemZi, year: 2005
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Studium substitučních a kondenzačních reakcí organohlinitých sloučenin
ChemZi, year: 2005
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Synthesis and evolution of crystalline garnet phases in Y3Sc5-xGaxO12
Philosophical Magazine Letters, year: 2005, volume: 85, edition: 11
2004
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Aluminophosphonates and phosphates by Nonhydrolytic Synthetic Routes
Materials Discussion 7 - P31, year: 2004
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Dichlorotetrakis(tetrahydrofuran)aluminium trichloroethylaluminate
Acta Crystallographica Section E: Structure Reports Online, year: 2004, volume: 60, edition: 4
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Doped Aluminates Via Sol-Gel Synthesis
Sol-Gel Materials 04 Research, Technology, Applications, year: 2004
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Optimalizace přípravy mezostrukturního hlinitého materiálu
Chemické listy, 56. sjezd chemických společností, year: 2004
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PREPARATION AND CHARACTERIZATION OF THE CUBIC MOLECULAR ALUMINOPHOSPHONATES AND OPTIMIZATION OF THEIR SYNTHESIS
Chemické listy, 56. sjezd chemických společností, year: 2004