Portal de Periódicos da CAPES

In Situ Synthesis of MOF Membranes on ZnAl-CO 3 LDH Buffer Layer-Modified Substrates

2014; American Chemical Society; Volume: 136; Issue: 41 Linguagem: Inglês

10.1021/ja507408s

1943-2984

Yi Liu, Nanyi Wang, Jia Hong Pan, Frank Steinbach, Jürgen Caro,

Covalent Organic Framework Applications

We develop here a urea hydrolysis method to in situ prepare asymmetric ZnAl-CO3 layered double hydroxide (LDH) buffer layers with various stable equilibrium morphology on porous Al2O3 substrates. In particular it is found that well-intergrown ZIF-8 membranes can be directly synthesized on the ZnAl-CO3 LDH buffer layer-modified substrates, owing to the specific metal-imidazole interaction between ZnAl-CO3 LDHs and ZIF-8. Other Zn-based MOF membranes, like ZIF-7 and ZIF-90, can also be synthesized with this method. Our finding demonstrates that LDH buffer layer represents a new concept for substrate modification.