Abdelhamid Hani Nasser, Sultan Sahar, Mathew Aji P
Division of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, Stockholm, SE-10691, Sweden.
Advanced Multifunctional Materials Laboratory, Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71515, Egypt.
Dalton Trans. 2023 Mar 7;52(10):2988-2998. doi: 10.1039/d2dt04168e.
Metal-organic frameworks (MOFs) have advanced several technologies. However, it is difficult to market MOFs without processing them into a commercialized structure, causing an unnecessary delay in the material's use. Herein, three-dimensional (3D) printing of cellulose/leaf-like zeolitic imidazolate frameworks (ZIF-L), denoted as CelloZIF-L, is reported direct ink writing (DIW, robocasting). Formulating CelloZIF-L into 3D objects can dramatically affect the material's properties and, consequently, its adsorption efficiency. The 3D printing process of CelloZIF-L is simple and can be applied direct printing into a solution of calcium chloride. The synthesis procedure enables the formation of CelloZIF-L with a ZIF content of 84%. 3D printing enables the integration of macroscopic assembly with microscopic properties, , the formation of the hierarchical structure of CelloZIF-L with different shapes, such as cubes and filaments, with 84% loading of ZIF-L. The materials adsorb carbon dioxide (CO) and heavy metals. 3D CelloZIF-L exhibited a CO adsorption capacity of 0.64-1.15 mmol g at 1 bar (0 °C). The materials showed Cu adsorption capacities of 389.8 ± 14-554.8 ± 15 mg g. They displayed selectivities of 86.8%, 6.7%, 2.4%, 0.93%, 0.61%, and 0.19% toward Fe, Al, Co, Cu, Na, and Ca, respectively. The simple 3D printing procedure and the high adsorption efficiencies reveal the promising potential of our materials for industrial applications.
金属有机框架（MOFs）推动了多项技术的发展。然而，若不将MOFs加工成商业化结构，就难以推向市场，这导致该材料的应用出现不必要的延迟。在此，本文报道了通过直接墨水书写（DIW，也称机器人铸造）对纤维素/叶状沸石咪唑酯框架（ZIF-L）进行三维（3D）打印，即CelloZIF-L。将CelloZIF-L制成3D物体可显著影响材料性能，进而影响其吸附效率。CelloZIF-L的3D打印过程简单，可直接打印到氯化钙溶液中。该合成过程能够形成ZIF含量为84%的CelloZIF-L。3D打印能够将宏观组装与微观特性相结合，即形成具有不同形状（如立方体和细丝）的CelloZIF-L分级结构，其中ZIF-L的负载量为84%。这些材料可吸附二氧化碳（CO₂）和重金属。3D CelloZIF-L在1巴（0°C）下表现出的CO₂吸附容量为0.64 - 1.15 mmol/g。这些材料对铜的吸附容量为389.8±14 - 554.8±15 mg/g。它们对铁、铝、钴、铜、钠和钙的选择性分别为86.8%、6.7%、2.4%、0.93%、0.61%和0.19%。简单的3D打印过程和高吸附效率揭示了我们的材料在工业应用方面的广阔前景。
