Structure of Y0.75La0.25PO4.0.67H2O rhabdophane nanoparticles synthesized by the hydrothermal microwave method

Nanopowders with a rhabdophane structure of nominal composition Y0.75La0.25PO4.0.67H2O were obtained by hydrothermal-microwave synthesis. The monoclinic structure of rhabdophane was refined by the Rietveld method within the C2 (5) space group. The nanopowders were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM) and electron microdiffraction (selected area electron diffraction, SAED), small angle X-ray scattering (SAXS), thermal analysis, low-temperature nitrogen adsorption-desorption measurements for analysis of surface area and porosity (ASAP) and pycnometric density measurements. These methods showed the for-mation of rod-like single-crystal rhabdophane nanoparticles with isolated pores inside the nanoparticles. To describe the formation of such nanoparticles, a mechanism of coherent-accommodative intergrowth of nanoscale clusters with rhabdophane structure is proposed.

Automated summary

Nanopowders with a rhabdophane structure were synthesized by hydrothermal-microwave method. Various characterization techniques were used to study the nanopowders, revealing the formation of rod-like single-crystal nanoparticles with isolated pores inside. A mechanism of coherent-accommodative intergrowth of nanoscale clusters with rhabdophane structure was proposed to explain the formation of these nanoparticles.