The treatment of radioactive iodine waste is a difficulty in the field of nuclear waste disposal. In this work, the B₂O₃–Bi₂O₃–ZnO based materials with 50 ​mol% of B₂O₃ is chosen to immobilize silver-coated silica gel with different iodine loadings at 500, 550, and 600 ​°C. The results show that the highest amorphous fraction is gotten as 0.88 for the sample with 20 ​wt% of iodine in silver-coated silica gel sintered at 600 ​°C. In addition, both of the amorphous fraction and density increase with increasing temperature. The SEM-EDS result indicates that part of iodine is fixed into the glassy phase and other AgI grains are physically wrapped by the vitrified bulk. Our findings demonstrate the feasibility of B₂O₃–Bi₂O₃–ZnO based materials for the immobilization of silver-coated silica gel with different iodine loadings.

放射性碘废物的处理是核废物处理领域的一个难题。在这项工作中，选择具有50 mol％B ₂ O ₃的B ₂ O ₃ –Bi ₂ O ₃ –ZnO基材料固定在500、550和600°C下具有不同碘含量的涂银硅胶C。结果表明，最高的无定形级分得到0.88的样品与20重量镀银硅胶中的碘含量在600°C烧结。另外，无定形部分和密度均随温度升高而增加。SEM-EDS结果表明，一部分碘固定在玻璃相中，而其他AgI颗粒则被玻璃化的主体物理包裹。我们的发现表明，基于B ₂ O ₃ -Bi ₂ O ₃ -ZnO的材料可固定具有不同碘含量的涂银硅胶。