This book presents the basic and fundamental aspects of nanomaterials, its types, and classifications with respect to different factors. It contains methods of preparation and characterization of unique nanostructured materials. Consisting of six chapters, this book appeals to a wide readership from academia and industry professionals and is also useful to undergraduate and graduate students focusing on nanotechnology and nanomaterials, sustainable chemistry, energy conversion and storage, environmental protection, opto-electronics, sensors, and surface and interface science. It also appeals to readers who wish to know about the design of new types of materials with controlled nanostructures.