In Situ Synthesis of MOF Membranes on ZnAl-CO3 LDH Buffer Layer-Modified Substrates

详细信息    查看全文

• 作者：Yi Liu ; Nanyi Wang ; Jia Hong Pan ; Frank Steinbach ; J眉rgen Caro
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：October 15, 2014
• 年：2014
• 卷：136
• 期：41
• 页码：14353-14356
• 全文大小：323K
• ISSN：1520-5126

文摘

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鈥搃midazole 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.