Mushtaq Sajid, Husnain Syed M, Kazmi Syed Asad Raza, Abbas Yawar, Jeon Jongho, Kim Jung Young, Shahzad Faisal
Division of RI-Applied Research, Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul, 01812, Korea.
Department of Nuclear Engineering, Pakistan Institute of Engineering and Applied Sciences, P. O. Nilore, Islamabad, 45650, Pakistan.
Sci Rep. 2023 Nov 11;13(1):19696. doi: 10.1038/s41598-023-47075-y.
Toxic fission products, such as cesium (Cs) and iodine (I) are of great concern because of their long half-lives and high solubility in water. The simultaneous removal of Cs and I using a single adsorbent is an area of increasing interest. In this study, MXene/silver nanowire (AgNW) composite was synthesized through physical mixing and employed for simultaneous removal of iodide (I) and cesium (Cs) ions from contaminated water. The MXene/AgNW composite demonstrated excellent adsorption capacities of 84.70 and 26.22 mg/g for I and Cs, respectively. The experimental data supported the hypothesis of multilayer adsorption of Cs owing to the inter-lamellar structures and the presence of heterogeneous adsorption sites in MXene. The interaction between I and the AgNW involved chemisorption followed by monolayer adsorption. MXene/AgNW composite material exhibited promising results in the presence of competitive ions under extreme pH conditions. Thus, synthesized composite materials holds promising potential as an adsorbent for the remediation of radioactive liquid waste.
有毒裂变产物，如铯（Cs）和碘（I），因其半衰期长且在水中溶解度高而备受关注。使用单一吸附剂同时去除Cs和I是一个越来越受关注的领域。在本研究中，通过物理混合合成了MXene/银纳米线（AgNW）复合材料，并用于从受污染水中同时去除碘离子（I）和铯离子（Cs）。MXene/AgNW复合材料对I和Cs的吸附容量分别为84.70和26.22 mg/g，表现出优异的吸附性能。实验数据支持了由于MXene层间结构和异质吸附位点的存在而导致Cs发生多层吸附的假设。I与AgNW之间的相互作用涉及化学吸附，随后是单层吸附。MXene/AgNW复合材料在极端pH条件下存在竞争离子的情况下表现出良好的效果。因此，合成的复合材料作为放射性液体废物修复的吸附剂具有广阔的应用前景。
