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Proceedings Paper

In situ real-time monitoring of Pt-VO2 nanoparticle-nanowire assembly by GISAXS
Author(s): Cafer T. Yavuz; Sungsik Lee; Byeongdu Lee; Myung H. Kim; Jeong M. Baik; Sönke Seifert; Stefan Vajda; Christopher Larson; Randall E. Winans; Martin Moskovits; Alec M. Wodtke; Galen D. Stucky
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Paper Abstract

Methanol is a hydrogen carrier for fuel cells and its chemical transformations are of great current interest. Methanol oxidation by vanadium oxides is well studied, hence, serves as a good measure for catalytic activity. Arrays of VO2 nanowires grown on r-cut sapphire prove to be unique for the in situ catalytic activity tests. Here, we present size and morphology dependent activity of Platinum coated single crystalline VO2 nanowires in methanol oxidation reactions using Grazing Incidence Small Angle X-ray Scattering (GISAXS). Our findings show an unexpected sintering behavior of Pt at temperatures as low as 200 °C.

Paper Details

Date Published: 5 May 2010
PDF: 9 pages
Proc. SPIE 7679, Micro- and Nanotechnology Sensors, Systems, and Applications II, 76792D (5 May 2010); doi: 10.1117/12.851255
Show Author Affiliations
Cafer T. Yavuz, Univ. of California, Santa Barbara (United States)
Sungsik Lee, Argonne National Lab. (United States)
Byeongdu Lee, Argonne National Lab. (United States)
Myung H. Kim, Ewha Womans Univ. (Korea, Republic of)
Jeong M. Baik, Ulsan National Institute of Science and Technology (Korea, Republic of)
Sönke Seifert, Argonne National Lab. (United States)
Stefan Vajda, Argonne National Lab. (United States)
Christopher Larson, Univ. of California, Santa Barbara (United States)
Randall E. Winans, Argonne National Lab. (United States)
Martin Moskovits, Univ. of California, Santa Barbara (United States)
Alec M. Wodtke, Univ. of California, Santa Barbara (United States)
Galen D. Stucky, Univ. of California, Santa Barbara (United States)


Published in SPIE Proceedings Vol. 7679:
Micro- and Nanotechnology Sensors, Systems, and Applications II
Thomas George; M. Saif Islam; Achyut Kumar Dutta, Editor(s)

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