| AVS 58th Annual International Symposium and Exhibition | |
| Plasma Science and Technology Division | Thursday Sessions |
| Session PS+TF-ThM |
| Session: | Plasma Deposition and Plasma Enhanced ALD |
| Presenter: | Jean-Jacques Pireaux, Research Center in Physics of Matter and Radiation (PMR) Facultés Universitaires Notre-Dame de la Paix (FUNDP), Belgium |
| Authors: | M. Gulas, Research Center in Physics of Matter and Radiation (PMR) Facultés Universitaires Notre-Dame de la Paix (FUNDP), Belgium A. Felten, Research Center in Physics of Matter and Radiation (PMR) Facultés Universitaires Notre-Dame de la Paix (FUNDP), Belgium A. Mansour, Centre de Recherche Public - Gabriel Lippmann, Luxembourg J. Guillot, Centre de Recherche Public - Gabriel Lippmann, Luxembourg N. Claessens, Université Libre de Bruxelles, Belgium F. Reniers, Universite Libre de Bruxelles, Belgium A.L.D. Kilcoyne, Lawrence Berkeley National Laboratory J.-J. Pireaux, Research Center in Physics of Matter and Radiation (PMR) Facultés Universitaires Notre-Dame de la Paix (FUNDP), Belgium |
| Correspondent: | Click to Email |
A novel low temperature plasma method using organometallic precursors has been tested and optimised to produce various hierarchical nano-hybrid and micro-hybrid materials. Very fast, operating at low or ambient temperature, this original “one pot” physical method is extremely simple, not requiring any pre- or post-treatment. The plasma-based technique can use any kind of electric discharge (direct current, radio or microwave frequency), does operate at low pressure or at the atmosphere, and can be combined with a large choice of plasma gases and organometallic precursors. Examples of the versatility of the method will be shown, including Pt and Ni-decorated carbon nanotubes (CNTs), Ag and Ti-decorated latex beads, and Pd-decorated clay sheets.
One focus of the presentation will be the preparation and full characterisation of bimetallic Pd/Rh - CNT hybrids. The x-ray diffraction (XRD) and TEM (EDX) analyses were used to confirm that the deposited nano-particles are indeed truly Pd/Rh bimetallic, excluding the possibility of a simple physical aggregate/mixture of the two metals ; complementary analytical tools such as x-ray photoelectron spectroscopy (global information) and scanning transmission x-ray microscopy (truly local information) reveal that the particles contain a metal/oxide ratio depending of the processing gas; they testify also of the possibility of a nano-particle core-shell structure and of a reorganisation of its structure depending of the processing gas.