A novel core-shell composite pellet waste form was developed to immobilize An 4+ radioactive waste via microwave heating, aiming to improve the solid solubility of radioactive waste. The simulated An 4+ radioactive waste (CeO 2 ) was successfully incorporated into a core-shell composite pellet at 1300 °C, in which CeO 2 was incorporated into monazite (CePO 4 ) to form the core layer, and encapsulated within a shell layer comprised of CaZrTi 2 O 7 glass ceramics (GCs). The phase evolution, microstructure, and densification of both the core and ...
