title: Step-by-step seeding procedure for preparing HKUST-1 membrane on porous α-alumina support.
abstract: 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 α-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 α-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.
authors.affiliation: State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, 5 Xinmofan Road, Nanjing 210009, PR China.
authors.forename: Jiangpu
authors.initials: J
authors.lastname: Nan
authors.forename: Xueliang
authors.initials: X
authors.lastname: Dong
authors.forename: Wenjin
authors.initials: W
authors.lastname: Wang
authors.forename: Wanqin
authors.initials: W
authors.lastname: Jin
authors.forename: Nanping
authors.initials: N
authors.lastname: Xu
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D008567:Membranes, Artificial; D000073396:Metal-Organic Frameworks; D009942:Organometallic Compounds / Q000737:chemistry*; D010539:Permeability; D016062:Porosity
chemical_list: D008567:Membranes, Artificial; D000073396:Metal-Organic Frameworks; D009942:Organometallic Compounds; C539834:bis(1,3,5-benzenetricarboxylate)tricopper(II); D000537:Aluminum Oxide