Synthesis of TiO2 Nanotube Arrays by Sonication Aided Anodization and Its Application for Hydrogen Generation from Aqueous Glycerol SolutionRatnawati, Jarnuzi Gunlazuardi and SlametMATEC Web of Conferences, 28 (2015) 01001DOI: https://doi.org/10.1051/matecconf/20152801001