Layered Double Hydroxide Surface Modified with (3-aminopropyl)triethoxysilane by Covalent Bonding


  • This work is supported by the Korean Science & Engineering Foundation (ABRL R14-2003-014-01000-0).


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Interlayer surfaces of layered double hydroxide (LDH) have been functionalized with amine moieties by condensation between the hydroxyl groups and (3-aminopropyl)triethoxysilane (APS) molecules via the covalent oxane bonds M-O-Si (M=Zn and Cr) (see Figure). Since the galleries of the modified LDHs have a hydrophobic field, various functional molecules such as enzymes, catalysts, and organic molecules can be incorporated between the LDH layers.