Effect of RuO2 in the shape selectivity of submicron-sized SnO2 structures
Title | Effect of RuO2 in the shape selectivity of submicron-sized SnO2 structures |
Publication Type | Journal Article |
Year of Publication | 2005 |
Authors | Ramgir, NS, Mulla, IS, Vijayamohanan, KP |
Journal | Journal of Physical Chemistry B |
Volume | 109 |
Issue | 25 |
Pagination | 12297-12303 |
Date Published | JUN |
Type of Article | Article |
ISSN | 1520-6106 |
Abstract | Several dissimilar types of tin oxide microstructures including bipyramids, cubes, and wires synthesized effectively by means of a simple approach were investigated using X-ray diffraction (XRD), thermogravimetry/ differential thermometric analysis (TG-DTA), and X-ray photoelectron spectroscopy (XPS). A possible growth mechanism is proposed using the results of these studies. The texture coefficient values of all the structures, indexed to a tetragonal lattice, exhibit amazing variation in the preferred orientation with respect to their shapes. Although XPS data indicate that wires and cubes have a strong SnO2 type signal, bipyramids interestingly exhibit both SnO and SnO2 signals and a correlation of the binding energy helps in understanding the growth kinetics of such submicron structures. The. results suggest that the bipyramids are formed because of the vapor-solid process (VS) while wires and cubes are formed by the vapor-liquid-solid (VLS) progression. |
DOI | 10.1021/jp044677a |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 3.187 |