Synthesis and feasibility studies of doping U at Ti site of Y 2 Ti 2 O 7 as a radioactive waste immobilization matrix

N Gumber, M Shafeeq, SK Gupta, R Phatak… - Dalton …, 2023 - pubs.rsc.org
In pursuit of clean and green nuclear energy one of the major challenges is to effectively
immobilize the nuclear waste. In this context A2B2O7 type pyrochlore owing to its structural …

Structural evolution and chemical durability of uranium-doped high-entropy pyrochlore

Z Liu, L Wang, C Ding, M Tang, H Xie, T Li, X Chen… - Ceramics …, 2024 - Elsevier
The high-entropy ceramic solidified body ((LaPrEuGdYb) y U x) 2 Zr 2 O 7+ δ (y=(1− x)/5, x=
0.05, 0.10, 0.15, 0.20, 0.25) was prepared by immobilizing uranium (U) on the A-site of the …

Ultra-fast immobilization of simulated TRPO waste into as-prepared Gd2Zr2O7 by flash sintering

S Zuo, X Shu, Y Fu, Y He, G Zhao, G Wei, M Wen… - Ceramics …, 2024 - Elsevier
Flash sintering can prepare ceramics in extremely short time, which can significantly
improve fabrication efficiency and is promising for processing nuclear waste. Herein …

Design and synthesis of high-entropy A2B2O7-type pyrochlore ceramics for the immobilization of molten salt radwastes

K Zhang, X Duan, M Jiang, X Liu, Z Qian, Q Zhang… - Ceramics …, 2024 - Elsevier
Pyrochlore-based high-entropy ceramics can encapsulate multiple elements with different
valences, making them promising for immobilizing high-level radioactive nuclides in molten …

He2+ irradiation response of structural evolution at different depths of MgO-Nd2 (Zr1-xCex) 2O7 composite ceramics used for inert matrix fuel

Y Tang, J Wang, J Wang, L Kang, T Zhang, J Li… - Ceramics …, 2024 - Elsevier
This paper reported the irradiation response of a 55 wt.% MgO-45 wt.% Nd 2 (Zr 1-x Ce x) 2
O 7 (abbreviated to M-NZC x, x= 0, 0.3 and 1) composite ceramics used as candidate inert …

Hybrid Sol–Gel and Spark Plasma Sintering to Produce Perovskite-like SrTiO3 Ceramics for Radioactive Waste Isolation

AA Belov, OO Shichalin, EK Papynov… - Journal of Composites …, 2023 - mdpi.com
The paper presents a reliable technology combining sol–gel synthesis and spark plasma
sintering (SPS) to obtain SrTiO3 perovskite-type ceramics with excellent physicomechanical …

[HTML][HTML] Isothermal section of the ZrO2–HfO2–Nd2O3 ternary phase diagram at 1100° C

OA Korniienko, YV Yurchenko, OI Olifan, AV Samelyuk… - Hybrid Advances, 2023 - Elsevier
In the presented work, based on the results obtained by X-ray diffraction and microstructural
analysis, phase equilibria have been studied and an isothermal section of the ZrO 2–HfO 2 …

[HTML][HTML] Structural characterization and thermal expansion behaviour in Dy2Ti2− xZrxO7 (0≤ x≤ 2) system

C Nandi, R Phatak, S Kesari, R Rao… - Nuclear Engineering and …, 2024 - Elsevier
The superior irradiation stability of zirconates compared to titanates has led to an
investigation of the Dy 2 Ti 2-x Zr x O 7 (0≤ x≤ 2) series for potential use as control rod …

Disordering in pyrochlore phases for radionuclides disposal: a multiscale structure study

A di Biase - 2023 - air.unimi.it
Oxides with the general formula A2B2O7 and the pyrochlore structure have drawn much
attention in the field of radionuclides immobilization. The Gd2Zr2O7 composition, in …

Ab Initio Investigation of Gadolinium Zirconate Pyrochlore for Substantial Nuclear Waste Applications

Y Aliyu, N Ibrahim, B Yahaya… - UMYU …, 2024 - scientifica.umyu.edu.ng
Nuclear energy is an alternative low CO2 emission strategy anticipated to mitigate future
high energy demand. Radioactive wastes generated from spent nuclear fuel are the major …