Abstract
Layered double hydroxides (LDHs) are well-known as hydrotalcite-like clays, and have been studied over the past several decade since they have large potentials for the applications of anion-exchanger, catalysts, and immobilization hosts of biological materials by intercalation of various anionic matters into the layers. Most of studies used powder samples of LDH. For the application of optical and electronic devices, coatings of LDHs on substrates should be much suitable. Here, LDH coating films were directly prepared by the aqueous solution process using sol-gel-derived Al2O3 gel films. This process achieved synthesis LDH coatings at low temperature less than 100 °C. In this study, we focused on Zn-Al LDH coating and investigated the effects of concentration, temperature, and pH of zinc acetate solution and reaction time for the formation of LDH from Al2O3 gel films.
