|About this Abstract
||Materials Science & Technology 2011
||Solution-Based Processing for Ceramic Materials
||Investigation of Solution Combustion Synthesis and Precipitation Synthesis Conditions on TiO2 and ZnO Nanopowder Characteristics
||James P. Kelly, Olivia A. Graeve
|On-Site Speaker (Planned)
||James P. Kelly
TiO<sub>2</sub> and ZnO nanopowders have interesting electrical properties leading to their potential use in energy harvesting applications. Solution combustion synthesis (SCS), which most commonly uses metal nitrate precursors as an oxidizer source, is a synthesis technique that can result in fine powders. The lack of a stable titanium nitrate precursor has inspired us to investigate inexpensive and easy-to-handle metal complexes as fuel sources in the SCS process. SCS was performed using various amounts of either dihydroxybis(ammonium lactato)titanium complex or zinc citrate dihydrate complex as the fuel source and ammonium nitrate as the oxidizer. Direct precipitation of the respective oxides from these precursors is also attempted by use of dissolution and condensation reactions. Reactant concentrations as well as calcining temperature and time were studied. X-ray diffraction, dynamic light scattering, and thermogravimetric analysis were used to evaluate the phases, crystallite sizes, particle sizes, and contamination of the powders.