Iodine has critical roles in the chemical processes within a living organism and has wide applications in chemical engineering, medicines, material sciences etc. On the other hand, the radioactive iodine could be one of the biggest hidden dangers during the nuclear accidents in the modern nuclear industry. Capture and storage of iodine is of great importance for both applications of iodine and preventing the harmful leakage of radioactive iodine. Herein, we report our efforts in utilization of monolithic boron nitride (BN) foams in capture and reversible storage of iodine in both gaseous and liquid environment. The BN foam consisting of interwoven one-dimensional (1D) porous BN microfibers inherits the merits from h-BN such as high thermal stability and chemical inertness, thus showing great resistance to harsh environments; additionally, the BN foam possesses high porosity and large specific surface areas, which make it reliable as decent adsorbents. The high internal connectivity feature, as well as the presence of a large amount of iodine adsorption sites such as π bonds and functional groups, result in the high iodine uptake capacity. Our study indicates that the adsorption amount of violate iodine by BN foams can achieve ∼212 wt%. The adsorption of iodine by BN foams in n-hexane solution follows the pseudo-second-order model best, and the adsorption isotherms are more accordant with the Freundlich model. In addition, owing to the great chemical stability of the BN foams, the desorption of iodine and recovery of the BN foam adsorbents can be achieved by either washing the foams in ethanol solution or directly heat treatment in N₂ atmosphere at 800 °C for 2 h.

碘在生物体内的化学过程中起着至关重要的作用，并在化学工程，医学，材料科学等领域具有广泛的应用。另一方面，放射性碘可能是现代核事故中最大的隐患之一行业。碘的捕获和储存对于碘的应用和防止放射性碘的有害泄漏都是非常重要的。在此，我们报告了我们在气态和液态环境中利用整体式氮化硼（BN）泡沫捕获和可逆存储碘的努力。由交织的一维（B）一维多孔BN超细纤维组成的BN泡沫继承了h-BN的优点，例如具有高的热稳定性和化学惰性，因此对恶劣的环境显示出极大的抵抗力。此外，BN泡沫具有高孔隙率和较大的比表面积，使其可作为体面吸附剂使用。高的内部连通性特征以及大量的碘吸附位（例如π键和官能团）的存在，导致了高碘的吸收能力。我们的研究表明，BN泡沫对违法碘的吸附量可达到约212 wt％。BN泡沫在正己烷溶液中对碘的吸附最符合拟二级模型，吸附等温线与Freundlich模型更为一致。此外，由于BN泡沫具有出色的化学稳定性，可以通过在乙醇溶液中洗涤泡沫或在N中直接进行热处理来实现碘的解吸和BN泡沫吸附剂的回收。_2个大气压，在800°C下放置2小时。