Characterixation of Sol-Gel Deriveed Nanocomposite Coating of Ni+RuO2

Morphology of the nanocomposite coating of Ni䛣 prepared through sol-gel process was observed by scanning electron microscopy (SEM) and revealed a cracked-mud surface structure with an average particle size of 100 nm. X-ray diffraction (XRD) monographs confirmed the tetragonal structure of the RuO2 particles in the coating. Adition of alchohol into the sol solution increased the number of cracks per unit area, active sites and/or effective surface area of the coating with respect to the alcohol-free sample.