Low temperature synthesis of perovskite oxide using the adsorption properties of cellulose

La-0.8Sr(0).2CoO(3) (LSCO) oxide powder was prepared using the adsorption p roperties of cellulose. The preparation process was studied by XRD, FTIR, T G-DTA and CO2-TPD techniques. The results of XRD, IR and TG-DTA testified t hat cellulose could successfully reserve the homogeneity of the solution sy stem to the solid precursor. During the early stage of pyrolysis, cellulose was partially oxidized, and some COO- groups appeared in its texture, whic h were then complexed with the adsorbed metal ions, and effectively suppres sed the aggregation of metal ions. Formation of a pure perovskite and the p roperties of the powder resulted were found to be significantly influenced by the cellulose to metal nitrate ratio. Also the properties of the resulti ng powder were greatly influenced by the calcination conditions. If the pro duced carbon dioxide could not be eluted in time, carbonate would be formed in the bulk. Hence, a high calcination temperature (> 800 degreesC) was ne eded to acquire a pure phase LSCO. At optimized conditions, nano-crystal LS CO could be obtained at as low as 500 degreesC.