Hostname: page-component-745bb68f8f-b95js Total loading time: 0 Render date: 2025-01-15T01:19:59.899Z Has data issue: false hasContentIssue false
  • English
  • Français

Preparation and Characterization of Nanostructured Particulate Catalytic Materials

Published online by Cambridge University Press:  17 March 2011

Baiyun Tong ,
Upali Siriwardane ,
Seetala V. Naidu ,
Akundi N. Murty  and
Zhenchen Zhong
Baiyun Tong
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110015, P. R. China
Upali Siriwardane
Affiliation:
Institute for Micromanufacturing (IfM) and Physics Program, Louisiana Tech University, Ruston, LA 71272, USA
Seetala V. Naidu
Affiliation:
Department of Physics, Grambling State University, Caver Hall Room 74, RWE Jones Dr., Grambling, LA 71245, USA
Akundi N. Murty
Affiliation:
Department of Physics, Grambling State University, Caver Hall Room 74, RWE Jones Dr., Grambling, LA 71245, USA
Zhenchen Zhong
Affiliation:
Department of Physics, Grambling State University, Caver Hall Room 74, RWE Jones Dr., Grambling, LA 71245, USA
Get access

Abstract

Laser Induced Solution Deposition (LISD) is essentially a laser chemical processing with similar mechanism of the counterpart – laser chemical vapor deposition (LCVD). It is a novel method for synthesizing nanocsale particles or thin films with the combined advantages of laser chemical vapor deposition and electroless chemical deposition in solution (electrolyte). It is simple and efficient, and it can produce high quality nanoparticles or patterned uniform thin films. In this paper the nanostructured Co/CoOx particles have been fabricated by LISD technique. We have characterized the deposited materials by using scanning electron microscope (SEM), the high-resolution transmission electron microscope (HRTEM) and X-ray diffraction technique (XRD). We have found that the sizes of the deposited particles are smaller than 5 nm uniformly suspended in the solution used in the LISD deposition, and the sizes are smaller than 500 nm on the silicon substrates inserted in the deposited solution. The results by energy dispersive X-ray analysis (EDX) have indicated that there are Co peaks and O peaks, which meant there were oxygen contamination or the deposited products were cobalt oxide rather than pure cobalt nanoparticles. The X-ray diffraction has shown that we have obtained pure Co nanoparticles in some cases but we have obtained cobalt oxides in other cases, which mainly depended on the experimental conditions such as the selection of solvents and solutes as well as the selection of the lasers including the wavelength and the power of the laser beams. The studies of the magnetic properties, catalytic properties as well as their relationship of pure cobalt nanoparticles and cobalt oxide nanoparticles are in good progress and we will publish the useful results elsewhere.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W9.7.1
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Subramanniaan, R., Denney, P. E., Singh, J. and Ottoni, M., J. Mater. Sci., 33, 3471–3477 (1998).Google Scholar
2. Dobbins, T. A., Poondi, D. and Singh, J., J. Mater. Synth. & Processing, 7 (5), 261–271 (1999).Google Scholar
3. Poondi, D., Singh, J., J. Mater. Sci., 35, 2467–2476 (2000).Google Scholar
4. Poondi, D., Dobbins, T. and Singh, J., J. Mater. Sci., 36, 6237–6243 (2000).Google Scholar
5. Bomann, Mats, Narayan, Arun, Ferguson, Chriiistofer and Landstorm, Lars, in the 2nd Louisiana Conference on Microfabrication and Materials Science, Baton Rouge, LA, August 20-22, 2001.Google Scholar
6. Zhong, Z. C., Dowben, P. A. and Sellmyer, D. J., Materials Letters, 37, 320 (1998).Google Scholar
7. Dowben, P. A., Zhong, Z.C. and Sellmyer, D. J., US Patent 6, 025, 038 (issue date: 02/15/2000).Google Scholar
8. Dowben, P. A., Zhong, Z.C. and Sellmyer, D. J., US Patent 6, 077, 617 (issue date: 06/20/2000).Google Scholar
9. Zhong, Z. C., Chen, R. H. and Dowben, P. A., Appl. Surf. Sci., in press (2001).Google Scholar