In this study H3PW12O409H2O and H3PMo12O406H2O (HPA) particles
were changed into nano forms by heat-treatment in an autoclave as a simple, repaid,
inexpensive and one step method. The particle size of these nanoparticles was
around 25 nm. The as-synthesized nanostructures were characterized by dynamic
light scattering, X-ray powder diffraction, transmission electron microscopy, Fourier
transform infrared spectroscopy and inductively coupled plasma analyzer.
Thermal stability of nanoparticles was surveyed by thermal gravimeter analyse.
Acidity of prepared nanoparticles was investigated by pyridine adsorption method.
Results showed rising acidity by declining particle size of HPA.
