Novel morphology of needle-Like nanoparticles of Na2Mo2O7 synthesized by using Ultrasonic spray pyrolysis

Abstract

Low-temperature method for the synthesis of novel morphology of needle-like nanoparticles of disodium dimolybdate (Na 2 Mo 2 O 7 ) in the process of ultrasonic spray pyrolysis (USP) using aqueous solutions of thermodynamically stable molybdenum (VI) oxide clusters as precursor is described. Needle-like Na 2 Mo 2 O 7 particles were obtained and collected in toluene, while centrifugation was employed to isolate solid material from solution. The scanning electron microscopy (SEM) confirmed that the morphology of the synthesized Na 2 Mo 2 O 7 particles is needle-like collected into bundles. The X-ray Powder Diffraction (XRPD) analysis revealed appearance of orthorhombic Na 2 Mo 2 O 7 , synthesized at 300 °C. By comparing the XRPD pattern of the synthesized needle-like Na 2 Mo 2 O 7 powder obtained in the process of USP with the XRPD pattern simulated for randomly-distributed crystallites by planes, the most prefered growth plane of needle-like nanoparticles were found.