Step-by-Step Seeding Procedure for Preparing HKUST-1 Membrane on Porous 伪-Alumina Support

详细信息    查看全文

• 作者：Jiangpu Nan ; Xueliang Dong ; Wenjin Wang ; Wanqin Jin ; Nanping Xu
• 刊名：Langmuir
• 出版年：2011
• 出版时间：April 19, 2011
• 年：2011
• 卷：27
• 期：8
• 页码：4309-4312
• 全文大小：806K
• 年卷期：v.27,no.8(April 19, 2011)
• ISSN：1520-5827

文摘

Metal鈭抩rganic 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 Cu₃(btc)₂) membranes on porous 伪-alumina supports is reported. The in situ production of the seed layer was realized in step-by-step fashion via the coordination of H₃btc and Cu²⁺ on an 伪-alumina support. The formation process of the seed layer was observed by ultraviolet鈭抳isible 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.