Hydrothermal synthesis and characterization of K3Sb3A2O14·5H2O (A P,As)

Abstract

K₃Sb₃A₂O₁₄·5H₂O (A P, As) were synthesized by use of a hydrothermal method, and the synthesis conditions are discussed in detail. Both phases were characterized by various techniques including scanning electron microscopy, XRD, XPS, ³¹P MAS NMR, IR, DTA–TG. The unit-cell parameters for K₃Sb₃P₂O₁₄·5H₂O and K₃Sb₃As₂O₁₄·5H₂O are slightly smaller than those for the corresponding phases synthesized by solid-state reactions.