Electrochemical and Optical Characterization of Metal-Decorated Carbon Nanotubes
ORAL
Abstract
Hybrid electrodes combining carbon nanotubes with metal and metal oxide particles are promising for many catalytic applications including energy conversion and energy storage. Understanding the chemical interactions between the nanotube substrate and the catalytic nanopaticle is crucial for optimizing these types of electrodes. Here, we describe techniques for interrogating the metal-nanotube interface on the single-molecule level, using isolated single-walled nanotubes (SWNTs) decorated by single metal particles as the most basic, representative element of a bulk hybrid electrode. The resulting composite and its chemical interface is studied by two complementary techniques, electrochemical voltammetry and Raman spectroscopy. Results comparing the electrochemical behavior with the surface chemistry are presented.
*This research has been partly supported by NSF (CBET- 0729630 and CHE-0533162).
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Authors
Tatyana Sheps
Department of Physics and Astronomy, University of California Irvine, Irvine, CA 92697-4576
Vaikunth R. Khalap
Department of Physics and Astronomy, University of California Irvine, Irvine, CA 92697-4576
Alexander A. Kane
Department of Physics and Astronomy, University of California Irvine, Irvine, CA 92697-4576
Philip G. Collins
Departments of Physics and Astronomy, Chemistry, Molecular Biology and Biochemistry, University of California, Irvine, CA 92697-4576
Univ. of California Irvine
Department of Physics and Astronomy, University of California Irvine, Irvine, CA 92697-4576
Department of Physics and Astronomy, Univ. of California Irvine, Irvine CA 92697-4576
Department of Physics and Astronomy, Univ. of California Irvine, Irvine, CA 92697-4576
Hyunmin Kim
Department of Chemistry, University of California Irvine, Irvine, CA 92697-4576
Eric O. Potma
Department of Chemistry, University of California Irvine, Irvine, CA 92697-4576
