Author(s)

Hector F. Garces, Justin Roller, Cecil K. King’ondu, Saminda Dharmarathna, Roger A. Ristau, Rishabh Jain, Radenka Maric, Steven L. Suib

Department of Chemistry, University of Connecticut, Storrs, USA.
Department of Chemistry, University of Connecticut, Storrs, USA;Institute of Materials Science, University of Connecticut, Storrs, USA.
Department of Materials Science & Engineering, University of Connecticut, Storrs, USA;Center for Clean Energy Engineering, University of Connecticut, Storrs, USA.
Department of Materials Science & Engineering, University of Connecticut, Storrs, USA;Center for Clean Energy Engineering, University of Connecticut, Storrs, USA;Chemical and Biomolecular Engineering Department, University of Connecticut, Storrs, US.
Department of Sustainable Energy Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania.
Institute of Materials Science, University of Connecticut, Storrs, USA.
School of Engineering, Brown University, Providence, USA.

Nanocluster formation of a metallic platinum (Pt) coating, on manganese oxide inorganic membranes impregnated with multiwall carbon nanotubes (K-OMS-2/MWCNTs), applied by reactive spray deposition technology (RSDT) is discussed. RSDT applies thin films of Pt nanoclusters on the substrate; the thickness of the film can be easily controlled. The K-OMS-2/MWCNTs fibers were enclosed by the thin film of Pt. X-ray diffraction (XRD), scanning electron microscopy/X-ray energy dispersive spectroscopy (SEM/XEDS), focus ion beam/scanning electron microscopy (FIB/SEM), transmission electron microscopy (TEM), and X-ray 3D micro-tomography (MicroXCT) which have been used to characterize the resultant Pt/K-OMS-2/MWCNTs membrane. The non-destructive characterization technique (MicroXCT) resolves the Pt layer on the upper layer of the composite membrane and also shows that the membrane is composed of sheets superimposed into stacks. The nanostructured coating on the composite membrane material has been evaluated for carbon monoxide (CO) oxidation. The functionalized Pt/K-OMS-2/MWCNTs membranes show excellent conversion (100%) of CO to CO₂ at a lower temperature 200℃ compared to the uncoated K-OMS-2/MWCNTs. Moreover, the Pt/K-OMS-2/MWCNTs membranes show outstanding stability, of more than 4 days, for CO oxidation at 200℃.

Manganese Oxide Membrane; Pt Nanostructures; Reactive Spray Deposition Technology (RSDT); Film Deposition; X-Ray Tomography

Garces, H. , Roller, J. , King’ondu, C. , Dharmarathna, S. , Ristau, R. , Jain, R. , Maric, R. and Suib, S. (2014) Formation of Platinum (Pt) Nanocluster Coatings on K-OMS-2 Manganese Oxide Membranes by Reactive Spray Deposition Technique (RSDT) for Extended Stability during CO Oxidation. Advances in Chemical Engineering and Science, 4, 23-35. doi: 10.4236/aces.2014.41004.