Step-by-Step Seeding Procedure for Preparing HKUST-1 Membrane on Porous α-Alumina Support
Step-by-Step Seeding Procedure for Preparing HKUST-1 Membrane on Porous α-Alumina Support
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DOI：
10.1021/la200103w
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发表时间：
2011-04-19
期刊：
影响因子：
3.9
通讯作者：
Xu, Nanping
中科院分区：
文献类型：
--
作者：
Nan, Jiangpu;Dong, Xueliang;Xu, Nanping
金属有机骨架（MOF）膜在小分子分离方面具有显著的优势，引起了人们的广泛关注。集成的MOF膜的制备仍然是一个重大挑战。在载体上沉积均匀的种子层用于二次生长是获得集成的MOF膜的主要途径。报道了一种在多孔α-Al 2 O3载体上制备HKUST-1（Cu（3）（btc）（2））膜的新晶种法。通过H（3）btc和Cu（2+）在α-氧化铝载体上的配位，实现了种子层的原位生成。用紫外可见吸收光谱和原子力显微镜观察了种子层的形成过程。通过二次水热法在种子载体上生长HKUST-1膜，可以得到完整的HKUST-1膜.评价了膜的气体渗透性能。
Metal organic framework (MOF) membranes have attracted considerable attention because of their striking advantages in small molecule separation. The preparation of an integrated MOF membrane is still a major challenge. Depositing a uniform seed layer on a support for secondary growth is a main route to obtaining an integrated MOF membrane. A novel seeding method to prepare HKUST-1 (known as Cu(3)(btc)(2)) membranes on porous alpha-alumina supports is reported. The in situ production of the seed layer was realized in step-by-step fashion via the coordination of H(3)btc and Cu(2+) on an alpha-alumina support. The formation process of the seed layer was observed by ultraviolet visible absorption spectroscopy and atomic force microscopy. An integrated HKUST-1 membrane could be synthesized by the secondary hydrothermal growth on the seeded support. The gas permeation performance of the membrane was evaluated.