One-step Conversion of CO32-LDH (Layered Double Hydroxide) into Anion-exchangeable LDHs Using an Acetate-buffer/Salt Method

By carrying out decarbonation of CO32--type MgAl-LDH (layered double hydroxide) using an acetate-buffer/salt solution under N-2 flow, CO32- LDH was successfully converted into ClO4- and NO(3)(-)LDHs, which contain only a little residual CO32-, in one step under mild conditions. Due to the superior anion-exchangeability, they serve as suitable intermediates for the preparation of LDH hybrids.