Synthetic and characteristic aspects of some inorganic nanomaterials and their applications, including clean energy, environmental protection and abrasive polishing, are within the scope of this book. These inorganic nanomaterials involve metal (nickel), nonmetal (carbon), semimetal (antimony and bismuth) and compounds (oxide, hydroxide, fluoride and silicate), which have all sorts of morphologies such as nanoparticles, nanorods, nanobelts, hollow spheres, porous films, core-shell structures, and so on.