Coprecipitation with carbonates is an effective method for synthesis of the doped ceria nanopowder. This study compared the compositions and properties of the Gd2O3-doped CeO2 (GDC) nanopowders resulted by two ammoniu...Coprecipitation with carbonates is an effective method for synthesis of the doped ceria nanopowder. This study compared the compositions and properties of the Gd2O3-doped CeO2 (GDC) nanopowders resulted by two ammonium carbonates, including a carbonate mixture from China and a pure carbonate reagent from abroad. It was found that the precursors from the two precipitants were same to each other in composition, with a formula (NH4)0.25CeGd0.25(CO3)2·2H2O. However, the GDC nanopowder resulted by the carbonate mixture had smaller particle sizes and thus better sinterability than that resulted by the pure ammonium carbonate reagent.展开更多
文摘Coprecipitation with carbonates is an effective method for synthesis of the doped ceria nanopowder. This study compared the compositions and properties of the Gd2O3-doped CeO2 (GDC) nanopowders resulted by two ammonium carbonates, including a carbonate mixture from China and a pure carbonate reagent from abroad. It was found that the precursors from the two precipitants were same to each other in composition, with a formula (NH4)0.25CeGd0.25(CO3)2·2H2O. However, the GDC nanopowder resulted by the carbonate mixture had smaller particle sizes and thus better sinterability than that resulted by the pure ammonium carbonate reagent.
