COLL 286 |
| The N-doped titanium oxide participate was synthesized by hydrolysis N-substituted Ti isopropoxide. A thermogravimetric analysis of the solid participates shows the influence of the sintering treatment. The synthesized nanomaterials were post-treated by using temperatures and sintering times selected from thermogravimetric analysis. The organic residue on surface of these post-treated samples was characterized by ATR-FTIR. The morphologies and crystallinity of these sinter-treated nanomaterial was characterized by TEM and XRD. The nitrogen concentrations of these samples were measured by XPS. The photo properties of these post-treated samples were characterized by UV-Vis diffuse reflectance spectra. The photocatalytic activity of these samples was studied by photodecomposition of methylene blue, a model chemical for photoactivity measurements. These studies demonstrated that the sintering temperature and time imposed a significant effect on the photoactivities of the N-doped TiO2 nanomaterial, so that the organic residues will be removed by sintering and the nitrogen doping level will be retained for optimized catalysis. |
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Catalytic Activity and Surface Characterization of Deposited Metal Nanoparticles and Polyparticles on Metal Oxides
6:00 PM-8:00 PM, Monday, August 20, 2007 BCEC -- East Registration, Poster
Division of Colloid & Surface Chemistry |