Fig. 1From: Synthesis and Characterization of Nanoscale Tungsten Particles with Hollow Superstructure Using Spray Drying Combined with Calcination ProcessThe microstructure (a) and XRD pattern (b) of commercially available (NH4)6W7O24·6H2O powders, or (a) the microstructure of commercially available (NH4)6W7O24·6H2O powders, and (b) the XRD pattern commercially available (NH4)6W7O24·6H2O powdersBack to article page