Effect of the synthesis method on the properties of a Pb-bearing (Y–Gd–Ce) rare-earth phosphate used for the confinement of high-level radioactive waste

Structure and properties of gadolinium loaded calcium phosphate glasses

“…Phosphate-based glasses have been investigated as potential candidates for vitrification of radioactive nuclear wastes (HLW) [1][2][3][4], because of low melting temperatures, high thermal expansion coefficients and better solubility of wastes [5][6][7][8]. During the past decades, more glass composition based on phosphate have been proposed [9] as a potential host for the immobilization of high level nuclear waste (HLW).…”

Synthesis under hydrothermal conditions and structural transformations of nanocrystals in the LaPO4-YPO4-(H2O) system

“…Materials based on nanocrystalline rare-earth phosphates are of significant interest due to their wide range of applications in optics [1][2][3][4], catalysis [2,5,6], medicine [7][8][9], fabrication of gas sensors [10] and other fields [11][12][13]. Special attention is given to the binary-and multi-component systems based on rare-earth orthophosphates, as they are used as luminescent materials [14,15] and matrices for immobilizing toxic and radioactive waste [16][17][18].…”

“…For the synthesis of nanocrystalline materials based on rare-earth orthophosphates, soft chemistry methods are commonly used, such as precipitation [28,[32][33][34], sol-gel [3,[35][36][37][38], hydrothermal and hydrothermal-microwave synthesis [1,4,[38][39][40][41]. At times, precipitates obtained by soft chemistry methods are annealed at temperatures ≥ 500 • C to obtain samples with monazite and xenotime structures [18,20,43].…”