Preparation of I--Zirconium Phosphate from Fluorozirconate and Phosphoric Acid by Liquid-phase Deposition

I--Zirconium phosphate (I--ZrP) was prepared by liquid-phase deposition. Boric acid was added to a solution containing [ZrF6]2 anions, and phosphoric acid dropwise to cause slow decomposition of [ZrF6]2 and the subsequent reaction with H3PO4 to form I--ZrP. X-ray diffraction, scanning electron microscopy, solid-state 31P nuclear magnetic resonance spectroscopy, infrared spectroscopy, thermogravimetry, and elemental analyses indicate the formation of single-phase I--ZrP.