Mixed-Metal Oxide Nanopowders by Liquid-Feed Flame Spray Pyrolysis (LF-FSP): Synthesis and Processing of Core-Shell Nanoparticles.

[摘要] In this dissertation, liquid feed–flame spray pyrolysis (LF-FSP) was used for thesynthesis and characterization of mixed-metal oxide nanopowders in the Ce-Zr-Al-Osystem for potential catalytic, photonic, electronic and structural applications. The LFFSPprocess aerosolizes metalloorganic precursors dissolved in an alcohol solvent withoxygen, combusts the aerosol, and then rapidly quenches the gaseous species to producenanosize oxide ;;soot” with the same compositions as those in the starting precursorsolutions. The wide variety of potential metal oxide precursors allows the synthesis ofmultiple chemical compositions, phase and unique particle morphologies in the resultingnanopowders.Surprisingly, LF-FSP with the correct choice of metalloorganic precursorsprovides access to core-shell nanopowders in a single step.The (ZrOx)x(Al2O3)1-x system was explored first for potential structuralapplications as zirconia toughened alumina (ZTA) composites. During the LF-FSP process, core-shell nanoparticles with

[发布机构] University of Michigan

[效力级别] Materials Science and Engineering

[关键词] Coreshell Nanostructured Nanopowders;Materials Science and Engineering;Engineering;Materials Science and Engineering