AlCu-oxides pillared Montmorillonite (MMN) was synthesized by the ion-exchange reaction and then impregnated by bismuth (Bi) to produce single-phase material (Bi@AlCu-PILC) aiming at vapor iodine (I₂) capture. The resulting Bi@AlCu-PILC mesoporous material demonstrated high capture capacity and thermal stability. The displayed capture capacity, 485 ± 54 mg-I/g-sorbent, was benefited from the strong affinity of Bi to iodine and the pores of the material. The gaseous I₂ was captured chemically by Bi@AlCu-PILC via Bi-O-I and BiI₃ formation in the inner surface of the AlCu-PILC and pillars, respectively. In addition to the chemisorption, molecular I₂ was captured physically in the pores of the material. The stability of the iodine-containing material was investigated by a leaching experiment before and after Bi₂O₃ treatment of the material. Without Bi₂O₃ treatment, Bi@AlCu-PILC-I showed 22.12 mass% iodine losses after exposure to hot aqueous media for 7 days. On the other hand, after the post-sorption treatment at 500 ^OC, the iodine loss was only 0.75 mass% under similar conditions, indicating the material is stabilized significantly after the treatment. Post-sorption treatment of Bi@AlCu-PILC-I by Bi₂O₃ at high temperature transformed BiI₃ into a more thermally durable form (Bi-O-I). These results indicate that Bi@AlCu-PILC is a promising material for vapor iodine capture and subsequent final disposal.

通过离子交换反应合成了AlCu-氧化物柱状蒙脱土（MMN），然后用铋（Bi）浸渍以制备单相材料（Bi @ AlCu-PILC），目的是捕集蒸气碘（I ₂）。所得的Bi @ AlCu-PILC介孔材料显示出高捕获能力和热稳定性。由于Bi对碘和材料孔的强亲和力，显示的捕获能力为485±54 mg-I / g吸附剂。气态的I ₂被Bi @ AlCu-PILC分别通过在AlCu-PILC的内表面和柱中的Bi-OI和BiI _3的形成而被化学捕获。除化学吸附外，分子I ₂被物理捕获在材料的孔中。Bi ₂ O ₃处理该材料之前和之后，通过浸出实验研究了含碘材料的稳定性。在未经Bi ₂ O ₃处理的情况下，Bi @ AlCu-PILC-1暴露于热的水性介质7天后碘损失为22.12质量％。在另一方面，在500后吸附处理后^Ó C，碘损失是相似的条件下仅0.75质量％，表明该材料在处理之后显著稳定化。Bi ₂ O ₃在高温转化的BiI _3上对Bi @ AlCu-PILC-I的后吸附处理制成更耐高温的形式（Bi-OI）。这些结果表明，Bi @ AlCu-PILC是一种有前途的材料，可用于气相碘的捕获和后续的最终处置。