State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China.
Engineering Research Center of Nuclear Technology Application (East, China University of Technology), Ministry of Education, Nanchang, 330013, Jiangxi, China.
Environ Sci Pollut Res Int. 2024 Mar;31(14):22073-22086. doi: 10.1007/s11356-024-32448-1. Epub 2024 Feb 24.
Inspired by its large specific surface area, and tunable chemical and physical properties, a hollow carbon-based mater8ial derived from ZIF-8 with phosphate groups (HCM-PO) was prepared for the elimination of U(VI). The structural and surface features of HCM and HCM-PO were thoroughly examined using techniques such as SEM, TEM, and XRD. The resulting carbon material, HCM-PO, exhibits a higher BET surface area of 571.2 m·g, featuring a hollow structure. The removal procedure of HCM-PO for U(VI) aligns with the quasi-secondary kinetic model. Furthermore, the theoretical sorption capacity of HCM-PO was found to be 482.30 mg·g at 298.15 K. The results obtained from XPS, FT-IR, and EDS analysis of HCM-PO after adsorption revealed the coordination of the phosphate group for U(VI), contributing significantly to the adsorption process. In brief, the HCM-PO demonstrates excellent adsorptive ability, positioning it as a hopeful expectant to remove U(VI) from wastewater.
受其大的比表面积和可调的化学物理性质的启发，用具有磷酸盐基团的沸石咪唑酯骨架-8 （ZIF-8）衍生出一种空心碳基材料（HCM-PO），用于去除 U(VI)。采用 SEM、TEM 和 XRD 等技术对 HCM 和 HCM-PO 的结构和表面特征进行了深入研究。所得的碳材料 HCM-PO 具有较高的 BET 表面积为 571.2 m·g ，呈空心结构。HCM-PO 对 U(VI)的去除过程符合准二级动力学模型。此外，在 298.15 K 下，HCM-PO 的理论吸附容量被发现为 482.30 mg·g。吸附后用 XPS、FT-IR 和 EDS 分析 HCM-PO 的结果表明，磷酸基团与 U(VI)的配位对吸附过程有重要贡献。总之，HCM-PO 表现出优异的吸附能力，有望从废水中去除 U(VI)。
