(528d) Nanocoating of Metals Oxides on Nanoscale Substrates in Organic Solvents

A new coating technique in a liquid phase is reported to coat carbon nanotubes (CNTs), carbon black (CB), and iron oxide (IO) as a substrate by titanium dioxide (TiO₂), niobium oxide (Nb₂O₅), and aluminum oxide (Al₂O₃). The coating process was carried out under an inert atmosphere by using a specially-designed set up. Heptane as an organic solvent was used to disperse the substrates with a deposited water film. The metal oxides precursors are also dissolved in the organic solvent. The thickness of the metal oxide coatings can be controlled from 5 to 80 nm. In addition, Nb₂O₅ Nano shells and porous Al₂O₃ nanotubes with a high surface area are produced by burning off the carbon. Transmission electron microscopy (TEM), electron low loss energy spectrum (ELLS), and thermo gravimetric analysis (TGA) were carried out to get deep insight for the coatings. In this presentation, we will demonstrate the nanocatings of various metal oxides on different substrates and demonstrate their advanced applications as catalyst supports and absorbents.