Abstract: Provided are low-temperature formation methods of a perfectly oriented ZnO nanorod array and a new-type ZnO nanowall array having a new crystal growth rate, morphology, and orientation, from ZnO nanoparticles coated on a substrate. The method of forming the ZnO nanorod array includes synthesizing ZnO nanoparticles, coating on a substrate the ZnO nanoparticles serving both as a buffer layer and a seed layer, and growing the ZnO nanoparticles into crystals in a nutrient solution containing Zn nitrate, Zn acetate, or a derivative thereof, and hexamethylenetetramine. The method of forming the ZnO nanowall array includes synthesizing ZnO nanoparticles, coating on a substrate the ZnO nanoparticles serving both as a buffer layer and a seed layer, and growing the ZnO nanoparticles into crystals in a nutrient solution containing Zn acetate or its derivative and sodium citrate.

Abstract: The present invention provides the hybrids wherein itraconazole, cyclosporine or carvedilol are intercalated into the interlayers and/or absorbed onto the surfaces of layered silicates. The hybrids according to the present invention enable the maximization of bioavailability of drugs by dissolving the drugs from the layered silicates. Furthermore, the present invention provides the preparing methods of the hybrids.