Abstract
? 2022 Elsevier B.V.In this study, europium doped GdPO4·H2O were prepared by hydrothermal synthesis. The main goal was to investigate the dependence of the size of nanoparticles on the synthesis conditions. One parameter was changed during each synthesis. The synthesis of Gd0.85Eu0.15PO4·H2O had been performed by changing the volume of solvent (H2O) in the reactor of hydrothermal autoclave meanwhile the number of reagents was kept the same. The pH of the solution had been adjusted by adding nitric acid. Nanorods of various controlled sizes were obtained during the synthesis under these conditions. Samples were analyzed by X-ray diffraction and scanning electron microscopy. The luminescence properties were also measured and discussed in detail, demonstrating the dependence of the emission intensity on the dopant position (bulk or surface).
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Elsevier