Titania surface structures for directed growth of metal nanoparticles via metal vapour deposition and metal organic chemical vapour deposition
Bennett, R.A., Newton, M.A., Smith, R.D., Evans, J. and Bowker, M. (2002) Titania surface structures for directed growth of metal nanoparticles via metal vapour deposition and metal organic chemical vapour deposition. Materials Science and Technology, 18, (7), 710-716. (doi: 10.1179/026708302225003802)
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Official URL: http://dx.doi.org/10.1179/026708302225003802
Description/Abstract
In this paper metal vapour deposition and metal organic chemical vapour deposition have been used to produce nanoscale metal particles on various TiO2(110) surfaces. The nanoparticles (Pd and Rh) are imaged directly by scanning tunnelling microscopy at ambient and elevated temperature in ultra high vacuum. The surface reconstruction of the TiO2 to a cross-linked (1 x 2) is used to form highly corrugated rectangular arrays that direct the growth of the Pd clusters. Thermal annealing at first induces a flattening and then a sintering of the nanoparticles. Ultimately the particles form a wide distribution of shapes and sizes. A crystal displaying crystallographic shear planes, composed of a self assembled array of alternating up-down step edges on the terrace, is used to direct the growth of Rh nanoparticles from [Rh(CO)(2)Cl](2). The particles are shown to grow mainly at the top edge of each step that runs at an angle to the principal directions of the surface.
| Item Type: | Article |
|---|---|
| ISSN: | 0267-0836 (print) |
| Uncontrolled Keywords: | scanning-tunneling-microscopy, tio2(110) surface, tio2 surfaces, stm, rhodium, pd, spectroscopy, nucleation, (2), visualization |
| Related URLs: | http://dx.doi.org/10.1179/0267...2225003802 |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| ePrint ID: | 19673 |
| URI: | http://eprints.soton.ac.uk/id/eprint/19673 |
| Deposited On: | 16 Feb 2006 |
| Last Modified: | 01 Jun 2011 00:29 |
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