Ben Neon Limor, Drobek Martin, Bechelany Mikhael, Rebiere Bertrand, Julbe Anne
Institut Européen des Membranes (IEM), Univ Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095, Montpellier, France.
Gulf University for Science and Technology, GUST, Sabah Al-Salem, Kuwait.
Sci Rep. 2024 Aug 29;14(1):20067. doi: 10.1038/s41598-024-71150-7.
Shaping Metal-Organic Frameworks (MOFs) poses a significant challenge for their widespread application on a large scale. In particular, a precise control over crystal orientation and arrangement on substrates are expected to provide exiting opportunities for novel materials with customized characteristics and enhanced performance in catalysis, gas storage, sensing, optics and electronics. Here we demonstrated for the first time that microwave irradiation can induce well controlled epitaxial growth of urchin-like MIL-53(Al) crystals via the hydrothermal conversion of Atomic Layer Deposition alumina layers on SiC foams. The resulting large, ordered crystals feature specific size, homogeneity, dispersion, and quantity that strongly correlate with the nature of the ceramic support and its ability to absorb microwaves. Furthermore, the supported MIL-53(Al) urchins were considered as templates for generating nanostructured alumina fibers on SiC foams, providing attractive catalyst carriers with high specific surface areas.
对金属有机框架材料（MOFs）进行成型处理，对其大规模广泛应用构成了重大挑战。特别是，精确控制晶体在基底上的取向和排列有望为具有定制特性且在催化、气体存储、传感、光学和电子学方面性能增强的新型材料提供令人兴奋的机遇。在此，我们首次证明，微波辐射可通过对碳化硅泡沫上原子层沉积氧化铝层进行水热转化，诱导出排列良好的海胆状MIL-53(Al)晶体的外延生长。所得的大尺寸有序晶体具有特定的尺寸、均匀性、分散性和数量，这些与陶瓷载体的性质及其吸收微波的能力密切相关。此外，负载的MIL-53(Al)海胆被视为在碳化硅泡沫上生成纳米结构氧化铝纤维的模板，从而提供具有高比表面积的有吸引力的催化剂载体。
